Well-dispersed sulfated zirconia nanoparticles as high-efficiency catalysts for the synthesis of bis(indolyl)methanes and biodiesel
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- 作者：Guochang Chen ; Cun-Yue Guo ; Hongbin Qiao ; Mingfu Ye ; Xiaoning Qiu ; Caibo Yue
- 关键词：Solid superacid ; Nano-sulfated zirconia ; bis(indolyl)methane ; Biodiesel
- 刊名：Catalysis Communications
- 出版年：2013
- 出版时间：5 November, 2013
- 年：2013
- 卷：41
- 期：Complete
- 页码：70-74
- 全文大小：1488 K
文摘
Well-dispersed sulfated zirconia nanoparticles were synthesized with poly(N-vinylpyrrolidone) as a surfactant. The resultant sulfated zirconia nanoparticles are characterized by SEM, XRD, FT-IR and XPS. These nanoparticles were directly used as catalysts for the synthesis of bis(indolyl)methanes and biodiesel via electrophilic substitution reaction of indole with various aldehydes and the esterification of long-chain free fatty acids and exhibited excellent catalytic activity. The mechanism of the formation of the synthesized zirconia nanoparticles was also proposed.