TH100626B - Method for preparing medium-sized porous silicon oxide catalysts for fatty acid esterification reaction - Google Patents

Abstract

------30/06/2023------(OCR) The invention relates to a method for preparing a heterogeneous acid catalyst for the esterification reaction of fatty acids, the steps of which comprise (a) synthesizing a silicon oxide compound having medium-sized pores (8 to 10 nm) connected in a hexagonal pattern; (hexagonal)(a) Bake the synthesized medium porous silicon oxide compounds.(c) Calcining the medium porous silicon oxide (calcine) at high temperature.(d) Add propylthiol groups (-Propy-SH) with 3-mercapto propyl trimethoxy silane solution to the medium porous silicon oxide.(e) Oxidation reaction with hydrogen peroxide (H2O2) to convert the propylthiol groups (-Propy-SH) to propylsulfonic acid (-Propyl-SO3H).(f) Increase the acidity with 0.1 - 0.5 M sulfuric acid solution.(g) Bake the synthesized acidic medium porous silicon oxide. ------------ DC60 (10/08/59) This invention relates to a method for preparing an acidic heterotrophic catalyst for Fatty acid esterification reaction, which consists of (a) synthesis of hexagonally connected medium-sized porous silicon oxide (8 to 10 nm) compounds; (b) annealing of the synthesized medium-sized porous silicon oxide compounds; (c) calcination of the medium-sized porous silicon oxide at high temperature; (d) joining of propylthiol (-Propyl-SH) groups with 3-mercaptopropyltrimethoxysilane solution to the medium-sized porous silicon oxide; (e) oxidation reaction with hydrogen peroxide (H2O2) to convert the propylthiol (-Propyl-SH) groups to propylsulfonic acid (-Propyl-SO3H); (f) acidification with 0.1–0.5 M sulfuric acid solution; and (g) annealing of the synthesized acidic medium-sized porous silicon oxide. Edited Invention Summary 10/08/2016 This invention relates to a method for preparing a heterogeneous acid catalyst for the esterification reaction of fatty acids, the steps of which include (a) synthesizing hexagonally connected medium-sized porous silicon oxide compounds (8 to 10 nm), (b) annealing the synthesized medium-sized porous silicon oxide compounds, (c) calcining the medium-sized porous silicon oxide at high temperature, (d) coupling propylthiol (-Propyl-SH) groups with 3-mercaptopropyltrimethoxysilane solution to the medium-sized porous silicon oxide, and (e) oxidizing the propylthiol (-Propyl-SH) groups with hydrogen peroxide (H2O2) to convert the propylthiol (-Propyl-SH) groups to propylsulfonic acid. (-Propyl-SO3H) (f) Acidification with 0.1 – 0.5 M concentrated sulfuric acid solution (g) Annealing of synthesized acidic medium porous silicon oxide ------------------------------------------------------------------------------------ The invention relates to the preparation of an acidic heterogeneous catalyst for the esterification reaction of fatty acids, the steps of which include (a) synthesizing hexagonally connected medium porous silicon oxide compounds (8 to 10 nm) (b) annealing the synthesized medium porous silicon oxide compounds (c) calcination of the medium porous silicon oxide at high temperature (d) joining propylthiol (-Propyl-SH) groups with 3-mercaptopropyltrimethoxysilane solution to the medium porous silicon oxide (e) oxidation reaction with hydrogen peroxide (H2O2) to convert the propylthiol (-Propyl-SH) groups to propylsulfonic acid. (-Propyl-SO3H) (c) Acidification with 0.1-0.5 M concentrated sulfuric acid solution. (d) Annealing of the synthesized acidic medium porous silicon oxide.