AUTHOR=Zhang Qidi , Hu Yuxuan , Li Siying , Zhang Meiqi , Wang Yangang , Wang Ziheng , Peng Yixiang , Wang Meng , Li Xi , Pan Hu TITLE=Recent advances in supported acid/base ionic liquids as catalysts for biodiesel production JOURNAL=Frontiers in Chemistry VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.999607 DOI=10.3389/fchem.2022.999607 ISSN=2296-2646 ABSTRACT=

Biodiesel is considered a potential substitute for fossil diesel because of its unique environmentally friendly and renewable advantages. The efficient and durable heterogeneous catalysts are vital to greenly and efficiently drive the biodiesel production process. The ionic liquid-functionalized materials, possessing the characteristics of both homogeneous and heterogeneous catalysts, are one of the promising substitutions for conventional homogeneous acid/base catalysts for producing biodiesel. This mini-review focuses on recent advances in supported acid/base ionic liquids to synthesize ionic liquid-functionalized materials for producing biodiesel. The methods of immobilizing ionic liquids on supports were summarized. The merits and demerits of various supports were discussed. The catalytic activities of the ionic liquid-functionalized materials for biodiesel production were reviewed. Finally, we proposed the challenges and future development direction in this area.