Synthesis of Acid- or Base-Functionalized Mesoporous Silica as Catalysts for the Transesterification of Triacetin

• Main Authors: Fong-Shu Chang, 張鳳書
• Other Authors: 鄭淑芬
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/38907677103655458645

碩士 === 國立臺灣大學 === 化學研究所 === 98 === Transesterification of triacetin with methanol was chosen as a model reaction to produce biodiesel. Mesoporous SBA-15 containing four different functional groups, including phenylsulfonic acid, propylsulfonic acid, carboxylic acid, and carboxylate, were used as acid and base catalysts, respectively. The catalytic performance of the materials in transesterification reaction was compared in terms of various functional groups, different loadings and different morphologies. Base functional groups were found more efficient than acid groups in catalyzing the transesterification. High conversion of triacetin and yield of methyl acetate were observed on platelet SBA-15 functionalized with large amount of carboxylate groups. The short-channels of SBA-15 facilitated the mass transfer in transesterification reaction.