QQ客服 官方微博 反馈留言

	Studies on acidity of chloroaluminate ionic liquids and its catalytic performance for alkylation of benzene with long-chain alkenes
	Wu Qin ; Dong Bin-qi ; Han Ming-han ; Xin Hong-liang ; Zuo Yi-zan ; Jin Yong
	2010-05-07 ; 2010-05-07
关键词	chloroaluminate ionic liquids IR spectroscopy acidity pyridine acetonitrile alkylation OXIDE CATALYSTS PYRIDINE SITES Spectroscopy
中文摘要	The acidity of chloroaluminate ionic liquids (ILs) was determined by using pyridine and acetonitrile as IR spectroscopic probes. Based on the characterization method of acidity of solid acid, IR (VCCN) absorption frequencies of pyridine in ionic liquids were assigned. By using the pyridine probe, it was found that when the anion molar composition x of ionic liquid varies within 0.4-0.5, ionic liquids exhibit weak Lewis acidity. Strongly basic molecular pyridine can be used as a probe to measure the acidity of ionic liquids whether their acidity is strong or weak, while weakly basic molecular acetonitrile is only fit for strong acid. In addition, the Lewis acidity-activity correlation for the chloroaluminate ionic liquids catalyst in the alkylation reaction was studied. The weakly acidic ILs with x <= 0.5 does not exhibit any catalytic activity in the alkylation reaction. When the anion molar composition x is more than 0.55, the activity of ionic liquids is greatly enhanced due to the increase in the strength of the strong Lewis acidic species Al2Cl7-. But with the increase in alkenes conversion, the selectivity of 2-alkylbenzene is slightly reduced.
语种	中文 ; 中文
出版者	BEIJING UNIV PRESS ; BEIJING ; HAIDIAN-QU, BEIJING 100871, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/17443]
专题	清华大学
推荐引用方式 GB/T 7714	Wu Qin,Dong Bin-qi,Han Ming-han,et al. Studies on acidity of chloroaluminate ionic liquids and its catalytic performance for alkylation of benzene with long-chain alkenes[J],2010, 2010.
APA	Wu Qin,Dong Bin-qi,Han Ming-han,Xin Hong-liang,Zuo Yi-zan,&Jin Yong.(2010).Studies on acidity of chloroaluminate ionic liquids and its catalytic performance for alkylation of benzene with long-chain alkenes..
MLA	Wu Qin,et al."Studies on acidity of chloroaluminate ionic liquids and its catalytic performance for alkylation of benzene with long-chain alkenes".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。