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Issue 23, 2017
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Direct conversion of bio-ethanol to propylene in high yield over the composite of In2O3 and zeolite beta

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Abstract

A series of In2O3-beta composites with different contents of zeolite beta were prepared by the deposition–precipitation method, followed by calcination at 700 °C, and their catalytic performance in the conversion of ethanol to propylene (ETP) was investigated. The physicochemical properties of the as-synthesized materials were characterized by XRD, N2 adsorption, SEM, NH3-TPD, CO2-TPD and a probe reaction. The combination of In2O3 and zeolite beta improves the propylene yield significantly. The optimal result was observed for the composite with a beta content of 20–50%, which gave ca. 50% yield of propylene. The role of beta in the In2O3-beta composite catalyst is to promote the conversion of the intermediate of acetone to propylene via an additional reaction pathway, which accounts for the superior propylene yield of the In2O3-beta composite in comparison with In2O3 (ca. 32%). The proximity of these two components (In2O3 and zeolite beta) plays a crucial role in achieving a high yield of propylene for the ETP reaction.

Graphical abstract: Direct conversion of bio-ethanol to propylene in high yield over the composite of In2O3 and zeolite beta

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Supplementary files

Article information


Submitted
07 Aug 2017
Accepted
07 Oct 2017
First published
09 Oct 2017

Green Chem., 2017,19, 5582-5590
Article type
Paper

Direct conversion of bio-ethanol to propylene in high yield over the composite of In2O3 and zeolite beta

F. Xue, C. Miao, Y. Yue, W. Hua and Z. Gao, Green Chem., 2017, 19, 5582
DOI: 10.1039/C7GC02400B

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