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