Effect of precipitant on the performance of CuZnAl catalysts in the gas phase selective hydrogenation of furfural to furfuryl alcohol

HUANG Yu-hui; REN Guo-qing; SUN Jiao; WANG Chong-qing; CHEN Xiao-rong; MEI Hua

Volume 44 Issue 6

Jun. 2016

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Article Navigation > Journal of Fuel Chemistry and Technology > 2016 > 44(6): 726-731

HUANG Yu-hui, REN Guo-qing, SUN Jiao, WANG Chong-qing, CHEN Xiao-rong, MEI Hua. Effect of precipitant on the performance of CuZnAl catalysts in the gas phase selective hydrogenation of furfural to furfuryl alcohol[J]. Journal of Fuel Chemistry and Technology, 2016, 44(6): 726-731.

Citation:

HUANG Yu-hui, REN Guo-qing, SUN Jiao, WANG Chong-qing, CHEN Xiao-rong, MEI Hua. Effect of precipitant on the performance of CuZnAl catalysts in the gas phase selective hydrogenation of furfural to furfuryl alcohol[J]. Journal of Fuel Chemistry and Technology, 2016, 44(6): 726-731.

Citation:

HUANG Yu-hui, REN Guo-qing, SUN Jiao, WANG Chong-qing, CHEN Xiao-rong, MEI Hua. Effect of precipitant on the performance of CuZnAl catalysts in the gas phase selective hydrogenation of furfural to furfuryl alcohol[J]. Journal of Fuel Chemistry and Technology, 2016, 44(6): 726-731.

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Effect of precipitant on the performance of CuZnAl catalysts in the gas phase selective hydrogenation of furfural to furfuryl alcohol

1.
College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China
2.
Catalytic Hydrogenation Engineering Technology Research Center, Nuomeng Chem, Nanjing 210009, China

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Corresponding author: Tel: 025-83172254, E-mail: cqw@njtech.edu.cn
Received Date: 2016-02-26
Rev Recd Date: 2016-03-31

Available Online: 2021-01-23

Publish Date: 2016-06-10

Abstract

Abstract

The catalysts of CuZnAl-1, CuZnAl-2 and CuZnAl-3 were prepared by the co-precipitation method using NaOH, Na₂CO₃ and Na₂CO₃/NaOH, respectively, as the precipitant. They were characterized by X-ray diffraction (XRD), N₂ adsorption-desorption, H₂-temperature programmed reduction (H₂-TPR), TGA, and NH₃-temperature programmed desorption (NH₃-TPD); the effect of precipitant on the performance of CuZnAl catalysts in the gas phase selective hydrogenation of furfural to furfuryl alcohol was then investigated in a fixed bed reactor. The results illustrate that all three catalysts exhibit high furfural conversion, whereas the CuZnAl-3 catalyst gives the highest selectivity to furfuryl alcohol. The precipitant has a great impact on the phase structure, surface area, acidity and redox property of the resultant CuZnAl catalysts. The CuZnAl-3 catalyst prepared with Na₂CO₃/NaOH precipitant exhibits proper specific surface area, CuO crystalline phase, weak acid sites and easily reducible CuO on the catalyst surface, which are conducive to produce furfuryl alcohol for the hydrogenation of furfural. Under the optimizing reaction condition, viz., atmospheric pressure, 180℃, hydrogen to furfural molar ratio of 5 and furfural volume space velocity of 0.3h^-1, the conversion of furfural over the CuZnAl-3 catalyst reaches 99.4%, with a selectivity of 98.3% to furfuryl alcohol.
- co-precipitation,
- CuZnAl catalyst,
- furfural,
- gas phase hydrogenation,
- furfuryl alcohol

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References(16)

References

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