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

• Autorzy: Zhang K. , Zhang H. , Ma H. , Ying W. , Fang D.

Identyfikatory

DOI

10.1515/pjct-2015-0003

• Języki publikacji: EN

Abstrakty

EN

PtSn/Al₂O₃ &enspcatalysts 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 &enspadsorption, H₂-TPR (H₂&ensp 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.

Słowa kluczowe

EN

Pt-Sn catalysts; preparation method; acetic acid hydrogenation; XPS; CO-FTIR

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2015
• Tom: Vol. 17, nr 1
• Strony: 11--17
• Opis fizyczny: Bibliogr. 40 poz., tab., wykr., wz.

Twórcy

autor

Zhang K.

• 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

autor

Zhang H.

• 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

autor

Ma H.

• 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

autor

Ying W.

• 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

autor

Fang D.

• 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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