Characteristics of post-impregnated SBA-15 with 12- Tungstophosphoric acid and its correlation with catalytic activity in selective esterification of glycerol to monolaurate

International Conference on Chemical and Bioprocess Engineering

地球科学;化学;生物科学

Hoo, P.Y.^1 ; Abdullah, A.Z.^1

School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, Seri Ampangan, Nibong Tebal, Pulau Pinang, Malaysia^1

关键词: 12-tungstophosphoric acid;    Catalyst loadings;    Material behaviour;    Post-impregnation;    Reactant ratios;    Reaction parameters;    Size selectivity;    Structural characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/36/1/012037/pdf
DOI  :  10.1088/1755-1315/36/1/012037

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

Selective esterification of glycerol and lauric acid to monolaurin was conducted using 12-tungstophosphoric acid (HPW) incorporated SBA-15 as catalyst. They were synthesized with HPW loadings of 10-40 wt. % via post impregnation and characterized in terms of surficial and structural characteristic, acidity and morphology. Relatively high lauric acid conversion (up to 95%) and monolaurin yield (53%) were observed while the activity was successfully correlated to the material behaviours, i.e. highly acidic active acid sites within highly uniformed mesopores. The effects of different reaction parameters including reactant ratio (1:1-5:1), catalyst loading (1-5 wt. %) and length of fatty acid were also elucidated. Reduced fatty acid conversion was observed when longer fatty acids were used, thus further strengthen the idea of size selectivity effect provided by the synthesized catalysts.