Preparation of Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> catalyst under microwave irradiation for slurry methanol synthesis

doi:10.1007/s11705-010-0521-x

Front Chem Eng Chin

2010, Vol. 4

Issue (4) : 445-451 https://doi.org/10.1007/s11705-010-0521-x

RESEARCH ARTICLE

Preparation of Cu/ZnO/Al₂O₃ catalyst under microwave irradiation for slurry methanol synthesis

Hui FAN, Huayan ZHENG, Zhong LI(

)

Key Laboratory of Coal Science and Technology (Ministry of Education and Shanxi Province), Taiyuan University of Technology, Taiyuan 030024, China

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Abstract

Cu/ZnO/Al₂O₃ catalysts with Cu/Zn/Al ratios of 6/3/1 were precipitated and aged by conventional and microwave heating methods and tested in the slurry phase reactor for methanol synthesis. The effect of technological condition of precipitation and aging process under microwave irradiation on the catalytic performance was investigated to optimize the preparing condition of Cu/ZnO/Al₂O₃ catalyst. The results showed that the microwave irradiation during precipitation process could improve the activity of the catalyst, but had little effect on the stability. While the microwave irradiation during aging process has a great benefit to both the activity and stability of the catalyst, the catalyst aged at 80°C for 1 h under microwave irradiation possessed higher methanol space time yield (STY) and more stable catalytic activity. The activity and stability of the catalyst was further enhanced when microwave irradiation was used in both precipitation and aging processes; the optimized condition for the catalyst precursor preparation was precipitation at 60°C and aging at 80°C under microwave irradiation.

Keywords microwave irradiation precipitation temperature aging temperature methanol synthesis Cu/ZnO/Al₂O₃ catalyst

Corresponding Author(s): LI Zhong,Email:lizhong@tyut.edu.cn

Issue Date: 05 December 2010

Cite this article:

Hui FAN,Huayan ZHENG,Zhong LI. Preparation of Cu/ZnO/Al₂O₃ catalyst under microwave irradiation for slurry methanol synthesis[J]. Front Chem Eng Chin, 2010, 4(4): 445-451.

URL:

https://academic.hep.com.cn/fcse/EN/10.1007/s11705-010-0521-x
https://academic.hep.com.cn/fcse/EN/Y2010/V4/I4/445

Tab.1 Methanol STY, selectivity for methanol () and deactivation rate () of the catalysts precipitated at different temperature under microwave irradiation

Fig.1 The XRD patterns of the catalysts

Tab.2 Methanol STY, selectivity for methanol () and deactivation rate () of the catalysts aged at different temperature under microwave irradiation

Fig.2 XRD patterns of the catalysts

Tab.3 Methanol STY, selectivity for methanol () and deactivation rate () of the catalysts aged at 80°C for different time under microwave irradiation

Fig.3 XRD patterns of the catalysts

Tab.4 Methanol STY, selectivity for methanol () and deactivation rate () of the catalysts precipitated and aged at different temperature under microwave irradiation

Fig.4 XRD patterns of the catalysts

Fig.5 Effect of solvent on performance of the catalyst aged under microwave irradiation

Fig.6 XRD patterns of the catalysts aged under microwave irradiation used different solvent

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