一种在二氧化铈催化剂促进下，以硫酸化二氧化钛为载体，对甲苯进行无溶剂硝化的清洁方法。
A clean method for solvent-free nitration of toluene over sulfated titania promoted by ceria catalysts.
作者信息
Mao Wei, Ma Hongzhu, Wang Bo
机构信息
Institute of Energy Chemistry, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an, People's Republic of China.
出版信息
J Hazard Mater. 2009 Aug 15;167(1-3):707-12. doi: 10.1016/j.jhazmat.2009.01.045. Epub 2009 Jan 20.
A mild simple method for nitration of aromatic compounds, various solid acids as catalysts, the air treated with the corona discharge generator as nitrating agent, the liquid-phase nitration of toluene, at ambient temperature and atmospheric pressure without solvent has been investigated. The results show that SO(4)(2-)/TiO(2) (ST) and SO(4)(2-)/TiO(2) doped with CeO(2) (STC) catalysts displayed good nitration activity in the experiments. It is an attractive method for the environmentally friendly synthesis of nitroaromatic compounds. Moreover, only mononitrotoluenes were detected in the products, and the ratio of para-nitrotoluene and ortho-nitrotoluene was approximately 1:1 with various catalysts. A maximum yield of about 11.4% was achieved for mononitrotoluenes in STC reaction system in 3h.
研究了一种温和简便的芳香族化合物硝化方法，以各种固体酸为催化剂，用经电晕放电发生器处理的空气作为硝化剂，在常温常压且无溶剂条件下进行甲苯的液相硝化。结果表明，SO(4)(2-)/TiO(2)（ST）和掺杂CeO(2)的SO(4)(2-)/TiO(2)（STC）催化剂在实验中表现出良好的硝化活性。这是一种用于硝基芳香族化合物环境友好合成的有吸引力的方法。此外，产物中仅检测到一硝基甲苯，且在使用各种催化剂时，对硝基甲苯和邻硝基甲苯的比例约为1:1。在STC反应体系中，3小时内一硝基甲苯的最大产率约为11.4%。
Zotero 插件