628-97-7Relevant articles and documents
Biocatalytic esterification of palm oil fatty acids for biodiesel production using glycine-based cross-linked protein coated microcrystalline lipase
Raita, Marisa,Laothanachareon, Thanaporn,Champreda, Verawat,Laosiripojana, Navadol
, p. 74 - 79 (2011)
Conversion of feedstocks containing high free fatty acid contents to alkyl esters is limited by the currently used alkali-catalyzed biodiesel synthesis process. In this study, esterification of palm fatty acids to ethyl esters was studied using heterogeneous cross-linked protein coated microcrystalline (CL-PCMC) lipase. Optimization of biocatalyst synthesis by variation of matrix components and organic solvents showed that highly active CL-PCMCs could be prepared from Thermomyces lanuginosus lipase with glycine as the core matrix in acetone. The optimized reaction contained 20% (w/w) glycine-based CL-PCMC-lipase, a 1:4 fatty acid molar equivalence to ethanol in the presence of an equimolar amount of tert-butanol which led to production of 87.2% and 81.4% (mol/mol) of ethyl ester from palmitic acid and industrial palm fatty acid distillate (PFAD), respectively after incubation at 50 °C for 6 h. CL-PCMC-lipase is more catalytically efficient than protein coated microcrystalline (PCMC) lipase, Novozyme435 and Lipolase 100T for both free fatty acids and palm fatty acid distillate. The CL-PCMC-lipase showed high operational stability with no significant loss in product yield after 8 consecutive batch cycles. The glycine-based microcrystalline lipase is thus a promising alternative economical biocatalyst for biodiesel production from inexpensive feedstocks with high free fatty acid contents.
NATURAL BIOSURFACTANT OF ESTER AND MANUFACTURING METHOD THEREOF
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Paragraph 0125; 0126; 0129-0132, (2020/12/11)
The present invention relates to an ester natural surfactant and a manufacturing method thereof. The present invention relates to an eco-friendly ester natural surfactant having excellent solubility in water and biodegradability, and a manufacturing method thereof. The present invention relates to an ester natural surfactant, and more particularly, to an ester natural surfactant and a method for preparing the same. (by machine translation)
Method for synthesizing ethyl palmitate by using deep eutectic solvent catalyst based on dodecyltrimethylammonium chloride
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Paragraph 0010-0013, (2020/06/05)
The invention discloses a method for preparing ethyl palmitate by using a deep eutectic solvent DTAC-DES based on dodecyltrimethylammonium chloride as a catalyst. The catalyst DTAC-DES is prepared bymixing dodecyltrimethylammonium chloride and p-toluenesulfonic acid according to a molar ratio of 1:3; and the ethyl palmitate is prepared by performing an esterification reaction on palmitic acid andexcessive anhydrous ethanol at a certain temperature, and sequentially performing phase separation, atmospheric distillation, reduced pressure distillation and other processes. The method has the advantages of mild reaction conditions, small corrosion of the catalyst to equipment, no waste acid discharge, no pollution and environmental friendliness; and the acidic eutectic solvent is high in catalytic activity, can be repeatedly used after being recycled, and is low in industrial production cost.