Catalytic deoxygenation of stearic acid and waste cooking oil over Pd/SBA-15 for obtaining hydrocarbons with potential as renewable liquid fuels was written by Pacheco-Sosa, Jose G.;Castillo-Escobedo, Anel I.;Chavarria-Hernandez, Juan C.;Diaz-Felix, Maria C.;Perez-Vidal, Hermicenda;Ordonez, Luis C.;Garcia-Davila, Jorge;Morales-Ortuno, Julio C.;Escobar, Beatriz. And the article was included in Journal of Porous Materials in 2019.Formula: C20H40O2 The following contents are mentioned in the article:
It has been found that catalytic deoxygenation of triglycerides is a viable pathway for obtaining renewable liquid fuels to contribute to meet the global energy demand. In this study, SBA-15 mesoporous silica was synthesized in a pure form and modified with mesitylene (TMB) as a swelling mol. (SBA15-TMB). Catalysts with 0.5, 1.5 and 3.0 wt% Pd were synthesized and tested by deoxygenation of stearic acid (SA), obtaining initial conversions of 68-98% that decreased to 36-73% after 6 h time-onstream. The most abundant product was n-heptadecane, with a selectivity of 鈭?90%. The most active catalyst evaluated with SA was 3.0 wt% Pd over unmodified SBA-15 (30Pd/SBA-15). Subsequently, fresh and regenerated 30Pd/SBA-15 catalysts were tested with waste cooking oil (WCO) feed, obtaining conversions of 74 and 72%, resp., but the fresh catalyst allowed a better oxygen removal (91%.Addnl., com. Pd 10wt%)/C catalyst was evaluated, obtaining results comparable to those for the regenerated 30Pd/SBA-15 catalyst. The main WCO reaction product for all catalysts was a diesel fraction (C12-C21), and the quality of the products was not very different, following the order: Pd(10wt%)/C > 3.0Pd/SBA-15-regenerated > 3.0Pd/SBA-15-fresh. The results obtained indicate that synthesized catalysts of this study are promising for obtaining renewable diesel from low-cost feeds while using low hydrogen consumption. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Formula: C20H40O2).
Methyl nonadecanoate (cas: 1731-94-8) 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 contain a carbonyl center, which gives rise to 120掳 C鈥揅鈥揙 and O鈥揅鈥揙 angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C鈥揙鈥揅 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. Formula: C20H40O2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics