The effect of preparation method on the performance of PtSn/Al2O3 catalysts for acetic acid hydrogenation

• Authors: Ke Zhang , Haitao Zhang , Hongfang Ma , Weiyong Ying , Dingye Fang
• Languages of publication: EN

Abstracts

EN

PtSn/Al2O3 catalysts with a given loading of 1 wt% Pt and 1 wt% Sn were prepared by co-impregnation or successive impregnation with aqueous solutions of Pt, Sn precursors and a commercial alumina. The catalysts were characterized by N2 adsorption, H2-TPR (H2 temperature-programmed reduction), H2-pulse chemisorption, XPS (X-ray photoelectron spectroscopy) and CO-FTIR (Fourier transform infrared spectroscopy), and tested in the hydrogenation of acetic acid. The results showed that the preparation method affected both the chemical properties and their performance in the hydrogenation of acetic acid. Sn enrichment on the catalysts surface was observed on the co-impregnated catalyst and catalyst in which the Pt precursor had been loaded first. It was found that the modification of Pt was a function of the sequence of Sn addition as revealed by CO-FTIR. Co-impregnated catalyst showed the highest activity and ethanol selectivity.

Keywords

EN

PtSn catalysts; preparation method; acetic acid hydrogenation; XPS; CO-FTIR

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2015
• Volume: 17
• Issue: 1
• Pages: 11-17

Dates

published

1 - 3 - 2015

online

25 - 3 - 2015

Contributors

author

Ke Zhang

• East China University of Science and Technology, Engineering Research Center of Large Scale Reactor Engineering and Technology of the Ministry of Education, State Key Laboratory of Chemical Engineering, Shanghai 200237, China

author

Haitao Zhang

• East China University of Science and Technology, Engineering Research Center of Large Scale Reactor Engineering and Technology of the Ministry of Education, State Key Laboratory of Chemical Engineering, Shanghai 200237, China

author

Hongfang Ma

• East China University of Science and Technology, Engineering Research Center of Large Scale Reactor Engineering and Technology of the Ministry of Education, State Key Laboratory of Chemical Engineering, Shanghai 200237, China

author

Weiyong Ying

• East China University of Science and Technology, Engineering Research Center of Large Scale Reactor Engineering and Technology of the Ministry of Education, State Key Laboratory of Chemical Engineering, Shanghai 200237, China

author

Dingye Fang

• East China University of Science and Technology, Engineering Research Center of Large Scale Reactor Engineering and Technology of the Ministry of Education, State Key Laboratory of Chemical Engineering, Shanghai 200237, China

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Identifiers

DOI

10.1515/pjct-2015-0003