Studies on the Hydrogenation of Acetonitrile over Fresh Mo2C/γ-Al2O3 Catalyst by In-situ IR Spectroscopy

被引:0
|
作者
Zhang Jing [1 ]
Wu Weicheng [1 ]
Liu Chuang [1 ]
Ding Xiaoguang [2 ]
Chu Gang [1 ]
Zhang Jianguo [3 ]
机构
[1] Liaoning Shihua Univ, Coll Chem Chem Engn & Environm Engn, Fushun 113001, Peoples R China
[2] Liaoning Shihua Univ, Sch Comp & Commun Engn, Fushun 113001, Peoples R China
[3] Univ Shanghai Sci & Technol, Sch Med Instrument & Food Engn, Shanghai 200093, Peoples R China
基金
中国国家自然科学基金;
关键词
fresh Mo2C/gamma-Al2O3 catalyst; hydrogenation; acetonitrile; in situ IR spectroscopy; GAS-PHASE HYDROGENATION; LIQUID-PHASE; NICKEL-CATALYSTS; NITRILES; ADSORPTION; PERFORMANCE; MECHANISM; CARBIDE; GROWTH; AMINES;
D O I
暂无
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The adsorption of acetonitrile, the co-adsorption of acetonitrile with CO, and hydrogenation of acetonitrile on fresh Mo2C/gamma-Al2O3 catalyst were studied by in situ IR spectroscopy. It was found out that CH3CN exhibited strong interaction with the fresh Mo2C/gamma-Al2O3 catalyst and was adsorbed mainly on Mo delta+ sites of fresh Mo2C/gamma-Al2O3 catalyst. Moreover, CH3CN could affect the shifting of IR spectra for CO adsorption towards a lower wave number. The IR spectroscopic study on acetonitrile hydrogenation showed that CH3CN could be easily hydrogenated in the presence of H-2 on the Mo2C/gamma-Al2O3 catalyst. Furthermore, it was observed that CH3CN could be selectively hydrogenated to imines on fresh Mo2C/gamma-Al2O3 catalyst. Additionally, the active sites of fresh Mo2C/gamma-Al2O3 catalyst might be covered with coke during the hydrogenation reaction of acetonitrile. The treatment of catalyst with hydrogen at 673 K could not completely remove coke deposits on the surface of the Mo2C/gamma-Al2O3 catalyst.
引用
收藏
页码:61 / 66
页数:6
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