Issue 33, 2017, Issue in Progress

The role of non-stoichiometric spinel for iso-butanol formation from biomass syngas over Zn–Cr based catalysts

Abstract

A series of Zn–Cr based catalysts modified by K promoter has been prepared by different methods and their performances for iso-butanol formation from biomass syngas were investigated in a fixed bed reactor. The ZnCr-c catalyst which was prepared by co-precipitation method showed the best catalytic performance for iso-butanol formation, over which ca. 30% of CO conversion and ca. 20% of iso-butanol selectivity were achieved. Multi-characterization studies were then conducted to reveal the internal causes for different performances for iso-butanol formation over different catalysts including high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), temperature programmed reduction (TPR) and X-ray photoelectron spectroscopy (XPS). The results reveal that ZnCr-c catalyst contains the maximum amount of non-stoichiometric spinel among all the catalysts. This fact implies that the non-stoichiometric spinel is the active phase for iso-butanol synthesis from syngas. The reducibility, texture parameters and basic property of catalysts are further important factors for the formation of iso-butanol over Zn–Cr based catalysts from biomass syngas.

Graphical abstract: The role of non-stoichiometric spinel for iso-butanol formation from biomass syngas over Zn–Cr based catalysts

Supplementary files

Article information

Article type
Paper
Submitted
03 Mar 2017
Accepted
17 Mar 2017
First published
06 Apr 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 20135-20145

The role of non-stoichiometric spinel for iso-butanol formation from biomass syngas over Zn–Cr based catalysts

S. Tian, S. Ding, Q. Yang, H. Ren, Q. Ma, Y. Zhao and Z. Miao, RSC Adv., 2017, 7, 20135 DOI: 10.1039/C7RA02627G

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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