Category: 106-73-0

Intrinsic role of pH in altering catalyst properties of NiMoP over alumino-silicate for the vapor phase hydrodeoxygenation of methyl heptanoate was written by Ramesh, Arumugam;Tamizhdurai, Perumal;Suthagar, Krishnan;Sureshkumar, Kandhasamy;Theres, Gubert Sonia;Shanthi, Kannan. And the article was included in New Journal of Chemistry in 2019.Formula: C8H16O2 The following contents are mentioned in the article:

Monometallic and bimetallic Ni₂P, MoP, and NiMoP active species were successfully impregnated on thermally stable, high surface area mesoporous alumino-silicate with an Si/Al ratio of 10 at room temperature via a facile wet impregnation method under both acidic and basic conditions using HCl and NH₄OH as pH regulators, resp. Furthermore, the intrinsic role of pH in altering the physicochem. properties of the catalysts was comprehensively evaluated. The catalysts were tested in a high-pressure stainless steel fixed bed reactor at different temperatures ranging from 275-350°, under 10-40 bar hydrogen pressure for the hydrodeoxygenation (HDO) of Me heptanoate. The reaction pathway and product distribution of Me heptanoate were manifested at different temperatures and pressures. The HDO activity and synergistic factor were found to be remarkably higher for the NiMoP/MAS (10)-A catalyst than the NiMoP/MAS (10)-B catalyst and its monometallic counterparts. This investigation proves that the NiMoP/MAS (10)-A catalyst is a promising catalyst for green fuel production from nonedible oils through hydrodeoxygenation. It was also unequivocally confirmed that the catalytic process does not suffer from any mass transfer resistance; thus, making the scaling up of the reaction more feasible. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Formula: C8H16O2).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Formula: C8H16O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Intrinsic role of pH in altering catalyst properties of NiMoP over alumino-silicate for the vapor phase hydrodeoxygenation of methyl heptanoate was written by Ramesh, Arumugam;Tamizhdurai, Perumal;Suthagar, Krishnan;Sureshkumar, Kandhasamy;Theres, Gubert Sonia;Shanthi, Kannan. And the article was included in New Journal of Chemistry in 2019.Formula: C8H16O2 The following contents are mentioned in the article:

Monometallic and bimetallic Ni₂P, MoP, and NiMoP active species were successfully impregnated on thermally stable, high surface area mesoporous alumino-silicate with an Si/Al ratio of 10 at room temperature via a facile wet impregnation method under both acidic and basic conditions using HCl and NH₄OH as pH regulators, resp. Furthermore, the intrinsic role of pH in altering the physicochem. properties of the catalysts was comprehensively evaluated. The catalysts were tested in a high-pressure stainless steel fixed bed reactor at different temperatures ranging from 275-350°, under 10-40 bar hydrogen pressure for the hydrodeoxygenation (HDO) of Me heptanoate. The reaction pathway and product distribution of Me heptanoate were manifested at different temperatures and pressures. The HDO activity and synergistic factor were found to be remarkably higher for the NiMoP/MAS (10)-A catalyst than the NiMoP/MAS (10)-B catalyst and its monometallic counterparts. This investigation proves that the NiMoP/MAS (10)-A catalyst is a promising catalyst for green fuel production from nonedible oils through hydrodeoxygenation. It was also unequivocally confirmed that the catalytic process does not suffer from any mass transfer resistance; thus, making the scaling up of the reaction more feasible. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Formula: C8H16O2).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Formula: C8H16O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Efficient synthesis of amides over Cu-Fe decorated multiwalled carbon nanotubes and mesoporous carbon catalysts was written by Hareesh, H. N.;Minchitha, K. U.;Nagaraju, N.;Kathyayini, N.. And the article was included in Journal of Nanoscience and Nanotechnology in 2020.Name: Methyl heptanoate The following contents are mentioned in the article:

A mixture of Cu (10%) and Fe (1 to 9%) was deposited on multiwalled carbon nanotubes (MWCNTs) and mesoporous carbon (MC). The catalytic activity was investigated in a reaction between carboxylic acids/esters and aromatic amines. The physico-chem. properties of the materials were characterized by different anal. techniques such as powder XRD (X-ray diffraction), BET (Brunauer-Emmett-Teller) surface area, XPS (XPS), TPD-NH₃ (Thermal Desorption Spectroscopy), SEM-EDS (SEM-Energy Dispersive Spectroscopy) and TEM (Transmission Electron Microscopy). The catalytic activity was investigated in the synthesis of aliphatic and aromatic amides from aliphatic/aromatic carboxylic acids and esters with aniline/benzyl amine. The yields of the products were in the range 30 to 92% with 100% selectivity. The percentage yield of amides from esters was found to be less than that of corresponding acids. Cu along with 5% of Fe supported on MWCNTs was found to be a better catalyst than when supported on MC, with respect to the isolated yield of the products and recyclability. The catalytic activity of the materials had a good correlation with their surface acidity. A plausible reaction mechanism has been proposed. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Name: Methyl heptanoate).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Name: Methyl heptanoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Below the room temperature measurements of solubilities in ester absorbents for CO₂ capture was written by Li, Yun;Liu, Qing;Huang, Weijia;Yang, Jie. And the article was included in Journal of Chemical Thermodynamics in 2018.HPLC of Formula: 106-73-0 The following contents are mentioned in the article:

Six ester absorbents were selected for CO₂ capture, such as Me benzoate, Me heptanoate, Et hexanoate, Bu butyrate, tri-Et phosphate and tri-Bu phosphate. CO₂ solubilities in these absorbents were determined under temperatures of 273.15-283.15 K, and pressures up to 1.2 MPa. Henrys constants of CO₂ + the selected absorbent systems at 273.15 K and 283.15 K were calculated and compared with those at higher temperature It seemed that decreasing the absorption temperature is obviously beneficial for enhancing absorption performance. In order to assess the absorption capacity for different phys. absorbents, Henrys constants and volumetric solubilities of the selected absorbents were compared with ionic liquids, common solvents and the selected absorbents in our previous work. The result showed that tri-Bu phosphate and tri-Et phosphate were found to be relatively good absorbents by mole and volumetric fraction resp., and they have potential value for CO₂ capture. Moreover, thermodn. properties such as entropy of solution, enthalpy of solution and Gibbs free energy of solution for the selected systems were calculated and assessed to study the absorption behavior. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0HPLC of Formula: 106-73-0).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. HPLC of Formula: 106-73-0

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Aroma-volatile profile of black morel (Morchella importuna) grown in Israel was written by Tietel, Zipora;Masaphy, Segula. And the article was included in Journal of the Science of Food and Agriculture in 2018.Product Details of 106-73-0 The following contents are mentioned in the article:

BACKGROUND : A headspace solid-phase microextraction method with gas chromatog.-mass spectrometry was used to profile the aroma volatiles of mature fruiting bodies of Morchella importuna grown in Israel. RESULTS : We tentatively identified 40 aroma compounds and seven unknown volatiles. The M. importuna aroma profile consisted of 14 aldehydes, six alcs., 10 Me esters, four heterocyclic/sulfur compounds, 10 carbohydrates and three other compounds (i.e. one acid, one ketone and one Bu ester). The most abundant volatiles were carbohydrates, with a total relative peak area of 29.3%, followed by alcs. (27.7%), aldehydes (21.6%), Me esters (10.8%), heterocyclic/sulfur compounds (3.1%) and other compounds (5.8%). The 8-carbon (C8) compounds imparting typical mushroom-like aroma were very abundant in M. importuna, accounting for 27.9% of the total peak area and including, amongst others, 1-octen-3-ol (80% of total C8), octanal and 2-octenal (Z- and E-). CONCLUSION : The aroma volatile profile of morels has much in common with that of other mushrooms, with a few unique characteristics. To our knowledge, this is the first detailed report of the aroma profile of M. importuna. © 2017 Society of Chem. Industry. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Product Details of 106-73-0).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Product Details of 106-73-0

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Bio-modified rubberized asphalt binder: A clean, sustainable approach to recycle rubber into construction was written by Lei, Lyu;Pei, Jianzhong;Hu, Dongliang;Sun, Guoqing;Fini, Elham H.. And the article was included in Journal of Cleaner Production in 2022.Quality Control of Methyl heptanoate The following contents are mentioned in the article:

This paper introduces a hybrid utilization of scrap tires and bio-oil made from biomass waste to create bio-modified rubberized asphalt for use in roadway construction. This in turn promotes clean and sustainable manufacturing while enhancing resource conservation and durability of pavements. The durability of pavements is impacted by the resistance of their asphalt binder to moisture damage and aging. This study examines the moisture resistance of bio-modified rubberized asphalt when exposed to thermal aging and UV aging. Study results show that thermal aging significantly weakens the cohesive properties of rubberized asphalt binder, while UV aging reduces its adhesive properties when exposed to water. Bio-modification of rubberized asphalt binder was found to be effective to improve resistance to cohesive damage by three times based on the rheol. test, and resistance to adhesive damage by 70% as measured by the moisture-induced shear-thinning index. The observed improvement is attributed to the bio-oil’s role as a sacrificial agent, delaying the reaction of free radicals and asphalt. Also, computational modeling shows that bio-oil mols. supersede asphalt mols. in adsorption to stones aggregates creating a stable bridge between stone and asphalt. The outcome of this study promotes clean and sustainable manufacturing while turning two waste streams (rubber and biomass waste) into a product (bio-modified rubber) in support of resource conservation and sustainability. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Quality Control of Methyl heptanoate).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Quality Control of Methyl heptanoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Rapid prediction of deoxynivalenol contamination in wheat bran by MOS-based electronic nose and characterization of the relevant pattern of volatile compounds was written by Lippolis, Vincenzo;Cervellieri, Salvatore;Damascelli, Anna;Pascale, Michelangelo;Di Gioia, Annalisa;Longobardi, Francesco;De Girolamo, Annalisa. And the article was included in Journal of the Science of Food and Agriculture in 2018.Safety of Methyl heptanoate The following contents are mentioned in the article:

BACKGROUND : Deoxynivalenol (DON) is a mycotoxin, mainly produced by Fusarium sp., most frequently occurring in cereals and cereal-based products. Wheat bran refers to the outer layers of the kernel, which has a high risk of damage due to chem. hazards, including mycotoxins. Rapid methods for DON detection in wheat bran are required. RESULTS : A rapid screening method using an electronic nose (e-nose), based on metal oxide semiconductor sensors, has been developed to distinguish wheat bran samples with different levels of DON contamination. A total of 470 naturally contaminated wheat bran samples were analyzed by e-nose anal. Wheat bran samples were divided in two contamination classes: class A ([DON] ≤ 400 μg kg^-1, 225 samples) and class B ([DON] > 400 μg kg^-1, 245 samples). Discriminant function anal. (DFA) classified wheat bran samples with good mean recognizability in terms of both calibration (92%) and validation (89%). A pattern of 17 volatile compounds of wheat bran samples that were associated (pos. or neg.) with DON content was also characterized by HS-SPME/GC-MS. CONCLUSIONS : These results indicate that the e-nose method could be a useful tool for high-throughput screening of DON-contaminated wheat bran samples for their classification as acceptable / rejectable at contamination levels close to the EU maximum limit for DON, reducing the number of samples to be analyzed with a confirmatory method. © 2018 Society of Chem. Industry. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Safety of Methyl heptanoate).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Safety of Methyl heptanoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Determination of Key Volatile Compounds Related to Long-Term Fermentation of Soy Sauce was written by Lee, Sang Mi;Kim, Sa-Bin;Kim, Young-Suk. And the article was included in Journal of Food Science in 2019.COA of Formula: C8H16O2 The following contents are mentioned in the article:

The changes of volatile compounds in soy sauce during long-term fermentation (12 mo) were investigated using solid-phase microextraction (SPME) and stir bar sorptive extraction (SBSE). A total of 144 and 129 compounds were identified in soy sauce with long-term fermentation by SPME and SBSE, resp. The contents of most compounds, such as acids, aldehydes, benzene and benzene derivatives, esters, lactones, pyrazines, pyrones, and pyrroles, showed a tendency to increase, whereas those of alcs. and ketones decreased according to long-term fermentation The initial fermentation stages were mainly associated with some alcs., ketones, and lactones, whereas the later stages were strongly associated with most esters, some phenols, benzene and benzene derivatives, and pyrroles. Moreover, the key volatile compounds associated with long-term fermentation in soy sauce samples were Et 3-methylbutanoate (Et isovalerate), Et pentanoate (Et valerate), 1-octen-3-yl acetate, 3-(methylthio)-1-propanol (methionol), Et benzoate, Et 2-phenylacetate, 1-(1H-pyrrol-2-yl)ethanone (2-acetylpyrrole), and 5-pentyl-2-oxolanone (γ-nonalactone). Practical Application : This study investigated changes of volatile compounds in soy sauce during long-term fermentation (12 mo) using solid-phase microextraction and stir bar sorptive extraction These results may help to predict th e effective contributors related to long-term fermentation of soy sauce and improve the quality of soy sauce during long-term fermentation This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0COA of Formula: C8H16O2).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.COA of Formula: C8H16O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Influence of Moringa oleifera biodiesel-diesel-hexanol and biodiesel-diesel-ethanol blends on compression ignition engine performance, combustion and emission characteristics was written by Ramalingam, Selvakumar;Mahalakshmi, N. V.. And the article was included in RSC Advances in 2020.Related Products of 106-73-0 The following contents are mentioned in the article:

In the current work, the influences of Moringa oleifera biodiesel-diesel-hexanol and Moringa oleifera biodiesel-diesel-ethanol blends on compression ignition engine characteristics were exptl. investigated. Experiments were conducted on a diesel engine at 0%, 25%, 50%, 75% and 100% load conditions run at a constant speed of 1500 rpm. The results revealed that B90-D5-H5 acquired the lowest BSFC and maximum BTE of 0.375 kg kW^-1 h^-1 and 28.8%, resp., and B100 had the highest BSFC of 0.425 kg kW^-1 h^-1. B90-D5-H5 had the highest cylinder peak pressure of 74 bar at 4°CA aTDC. The maximum heat release rate (HRR) and longer ignition delay (ID) period of 44 J per °CA and 14.4°CA, resp., were attained in the B90-D5-H5 blend. At 100% load condition, the lowest amount of carbon monoxide (CO) of 0.32% volume was acquired in the B80-D5-E15 blend. The maximum nitric oxide (NO) emission of 1090 ppm was also acquired in the B80-D5-E15 blend. B100 had the lowest NO of 846 ppm; B80-D5-E15 had the lowest unburned hydrocarbon (UBHC) emission of 34 ppm at 100% load and the lowest smoke opacity of 34%. Biodiesel-diesel-alc. blends improve engine performance and decrease emissions compared to the conventional diesel. The utilization of biodiesel-diesel-alc. blends reduces the consumption of diesel. Hence, ethanol and hexanol are recommended as potential alternative additives in biodiesel-diesel blends to improve engine performance and reduce emissions. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Related Products of 106-73-0).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Related Products of 106-73-0

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Study on the mechanism of auto-oxidation of Jatropha biodiesel and the oxidative cleavage of C-C bond was written by Sui, Meng;Chen, Yong;Li, Fashe;Wang, Wenchao;Shen, Jiaxu. And the article was included in Fuel in 2021.COA of Formula: C8H16O2 The following contents are mentioned in the article:

Jatropha biodiesel was obtained according to the continuous preparation process which included vapor esterification – transesterification – methanol steam distillation Accelerated oxidation of small Jatropha biodiesel was obtained by the Rancimat method. GC-MS and liquid phase micro-extraction were used to study and analyze the components in the oxidation process of Jatropha curcas biodiesel. The electronic effects of the related reactants and products were calculated by d. functional theory, followed by the deduction of the related chem. reaction paths. Exptl. investigation shows that Me linoleate is the main factor affecting the oxidation stability of the Jatropha biodiesel. The main volatile products at the initial stages of the oxidation of Me linoleate are hexanal, Me octanoate, styrene, and 2-heptenal. The cis/trans-3-octyl-oxiranyl octanoic acid Me ester (18.03% yield) is produced by the reaction of peroxy acid and Me oleate during the oxidation of Me oleate. The hydrogen extraction reaction is difficult to occur, and the oxidation reaction energy barrier is relatively high due to the relatively large bond energy of the C-H bond in the Me stearate mol. In this manuscript, the auto-oxidation mechanism of the biodiesel fatty acid Me esters at the initial stage of oxidation, the path of oxidative cleavage of the C-C bond of Jatropha biodiesel and the formation process of ethylene oxide structure are obtained through DFT calculation and anal. of the oxidation products. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0COA of Formula: C8H16O2).

Methyl heptanoate (cas: 106-73-0) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. COA of Formula: C8H16O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics