文献类型：期刊文献

英文题名：Enhanced Biodiesel Synthesis via Interfacial Mass Transfer Intensification in Pickering Emulsions Using an Amphiphilicity-Engineered β-Zeolite Catalyst

作者：Ayaz, Sunbal[1];Guo, Wenze[1,2];Wang, Kaiwen[1];Hedar, Mateen[1];Zhao, Ling[1];Xi, Zhenhao[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn & Low Carbon Technol, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Smart Mfg Energy Chem Proc, Minist Educ, Shanghai 200237, Peoples R China

年份：2025

卷号：13

期号：50

起止页码：21633

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20255219772566);WOS:【SCI-EXPANDED(收录号:WOS:001634133400001)】；

基金：This research was financially supported by the National Natural Science Foundation of China (Grant 22408099), the Program of Shanghai Leading Talents Overseas for Wenze Guo, and the Fundamental Research Funds for Central Universities.

语种：英文

外文关键词：Biodiesel; (trans)esterification; Pickeringemulsions; interfacial mass transfer; process intensification; solid acid; amphiphilicity

摘要：Despite advantages in feedstock compatibility and process simplicity for biodiesel production, solid acid catalysis faces severe intrinsic kinetic limitations in multiphasic transesterification reactions. This work overcomes this challenge by constituting a Pickering interfacial catalytic system using an amphiphilicity-engineered beta-zeolite that functioned dually as an emulsion stabilizer and solid acid catalyst. Precise amphiphilicity control via organosilane modification (optimal catalyst: HTS beta-24, contact angle of triolein of 84 degrees) maximized the emulsion stability and interfacial area (minimal droplet diameter of 14 mu m) at intermediate hydrophobicity. Crucially, biodiesel yield correlates directly with emulsion properties (not total acidity), demonstrating interfacial mass transfer as the dominant rate-limiting step. Leveraging this intensified mass transfer, an ultrahigh 98% methyl oleate (biodiesel) yield from triolein and methanol was achieved under mild conditions (80 degrees C, 3 h). Notably, the present system still delivered 89% yield without continuous agitation, outperforming the literature under milder conditions and enabling facile catalyst regeneration. This strategy synergizes interfacial mass transfer intensification with solid acid catalysis, advancing the process efficiency, scalability, and sustainability for biodiesel synthesis.