Citation: LI Ying, MA Hui-xia, ZHOU Feng, YUAN Xing-zhou, ZHANG Lei, ZHANG Jian. Performance of Ce-modified CuZnAl catalyst in the dehydrogenation of sec-butanol to methyl ethyl ketone[J]. Journal of Fuel Chemistry and Technology, ;2021, 49(1): 88-96. doi: 10.19906/j.cnki.JFCT.2021005 shu

Performance of Ce-modified CuZnAl catalyst in the dehydrogenation of sec-butanol to methyl ethyl ketone

LI Ying ¹ ,
MA Hui-xia ² ,
ZHOU Feng ² ,
YUAN Xing-zhou ¹ ,
ZHANG Lei ¹ ,
ZHANG Jian ^1,,

1.
Liaoning Petrochemical University, Fushun 113001, China
2.
Dalian Research Institute of Petroleum and Petrochemicals, Dalian 116000, China

Corresponding author: ZHANG Jian, zhangjian_lnpu@163.com
Received Date: 24 August 2020
Revised Date: 1 October 2020

Figures(8)

The CuZnAl catalyst prepared by co-precipitation was further modified with different contents of Ce through impregnation and used in the dehydrogenation of sec-butanol (SBA) to methyl ethyl ketone (MEK); the effect of Ce modification on the performance of CuZnAl catalyst was investigated. The results illustrate that the introduction of Ce in CuZnAl can promote the formation of CuAl₂O₄ spinel and thus improve the stability of Ce-modified CuZnAl catalyst; meanwhile, Ce is also conducive to reducing the grain size, enhancing the dispersion of CuO and ZnO, lowering the reduction temperature, and increasing the content of Cu²⁺ and consequently the content of active Cu⁰ species upon reduction. Over the Ce-modified 8%-Ce-CuZnAl catalyst, the conversion of SBA reaches 91.4% under 240 °C and a mass space velocity of 5 h⁻¹, with a selectivity of 96% to MEK; during the 100 h reaction test, the SBA conversion keeps at about 92%, with the selectivity to MEK at about 96%, demonstrating excellent stability of the Ce-modified CuZnAl catalyst.
- CuZnAl catalyst,
- dehydrogenation,
- sec-butanol,
- methyl ethyl ketone,
- Ce modification
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