Heterogeneous catalysts are receiving more importance for the transesterification of triglycerides present in any oils or fats to produce biodiesel. They are reusable, environmentally benign, could give high quality of products, and more effective than acid catalysts and enzymes for biodiesel production. Recently, heterogeneous catalysts derived from both waste industrial and biological resourc...

Biodiesel is a promising alternative diesel fuel obtained from vegetable oils, animal fats, or waste oils by transesterifying the oil or fat with an alcohol such as methanol. In an extension of previous work, fiber-optic near infrared spectroscopy was used to quantitatively monitor the transesterification reaction (6-L scale) of a vegetable oil (soybean oil) to methyl soyate. The results were c...

The exacting selectivity of enzymatic catalysis is the most valuable characteristic of enzymes to the synthetic chemist. Ironically, this strict specificity also limits the generality of enzymatic synthesis, because enzymes that catalyze the reaction of interest with the desired selectivity are not always available. Nonaqueous enzymology, and the discovery that enzymatic selectivity can be chan...

Nano-MgO was successfully deposited on titania using deposition-precipitation method. The catalyst produced was characterised using FTIR, XRD, BET and XRF and its activity was tested on the transesterification reaction of soybean oil to biodiesel. The catalyst activity improved when the reaction temperature was increasedfrom 150 and 225 C. It was also observed that increasing the reaction time ...

Lipase enzyme producing bacteria, Pseudomonas sp., have been grown at varying oil concentrations to make it adaptive for high oil concentrations and it was found to show the maximum growth and maximum lipase activity when 40- and 30-vol% of oil respectively was used as a source of carbon in growth medium. Bacteria was immobilized with sodium alginate and used as whole cell catalyst for the tran...

Biodiesel was prepared from the non-edible oil of Pongamia pinnata by transesterification of the crude oil with methanol in the presence of KOH as catalyst. A maximum conversion of 92% (oil to ester) was achieved using a 1:10 molar ratio of oil to methanol at 60 degrees C. Tetrahydrofuran (THF), when used as a co-solvent increased the conversion to 95%. Solid acid catalysts viz. Hbeta-Zeolite, ...

Multiwalled carbon nanotubes grafted with various amino groups show high activity and stability when used as basic catalysts for the transesterification of triglycerides.

Optical resolution of 2-methyl-2-nitrobut-3-en-1-ol has been accomplished using a "low-temperature lipase-catalyzed transesterification" carried out at -40 °C.

Feruloyl Soy Glyceride (FSG) is an all-natural replacement for petroleum-based ultraviolet absorbing ingredients currently used in sunscreens. It produced by the Novozym® 435-catalyzed transesterification of ethyl ferulate (EF) with triglycerides. By-product fatty acid esters (FAEEs) are more soluble CO2 than EF and triglyceride starting materials. was hypothesized that preferential removal FAE...

In this study, the influence of fatty acids of both conventional and non-conventional oils in supercritical transesterification method has been reviewed. Literature on oils such as moringa oleifera, manketti, croton megalocarpus, palm and soybean has been reviewed to establish an understanding of the supercritical transesterification that employed methanol as alcohol. This study reveals that lo...