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Citation: ZHANG Rui-Chao, YIN Heng-Bo, SHEN Yu-Tang, JIANG Ting-Shun. Gas Phase Hydrogenation of Maleic Anhydride to Tetrahydrofuran in the Presence of n-Butanol[J]. Chinese Journal of Applied Chemistry, ;2007, 24(11): 1304-1309. shu

Gas Phase Hydrogenation of Maleic Anhydride to Tetrahydrofuran in the Presence of n-Butanol

1.
Faculty of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013

Corresponding author: YIN Heng-Bo,
Received Date: 28 December 2006
Available Online: 20 May 2007
Fund Project: 江苏省教育厅自然科学基金(O4KJD130040) (O4KJD130040)镇江市工业科技攻关项目(GY2006017)资助 (GY2006017)

Cu-Zn-Ti catalysts were prepared by means of coprecipitation method. The catalysts were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, temperature programmed reduction, and H₂ adsorption. The catalytic performance of the Cu-Zn-Ti catalysts for the gas phase hydrogenation of maleic anhydride in the presence of n-butanol was studied at 235~280℃ and 1 MPa. The conversion of maleic anhydride was more than 96% and the selectivity of tetrahydrofuran was up to 92.7%. At the same time, n-butanol was converted to hydrogen and butyl butyrate via dehydrogenation, disproportionation, and esterfication. There were two kinds of CuO species present in the calcined Cu-Zn-Ti catalysts. At a lower copper content, the CuO interacted with ZnO and TiO₂; at a higher copper content, both the surface-anchored and bulk CuO species were present. Metallic copper(Cu⁰) produced by the reduction of the CuO species, which strongly interacted with ZnO and TiO₂, favored the deep hydrogenation of maleic anhydride. The deep hydrogenation ability of the Cu-Zn-Ti catalyst increased with the increase of lattice distortion of Cu⁰.
- maleic anhydride,
- n-butanol,
- hydrogenation,
- tetrahydrofuran,
- Cu-Zn-Ti
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