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

Abstract

A series of In2O3-Beta composites with different content of zeolite Beta were prepared by deposition-precipitation method, followed by calcination at 700 oC, and their catalytic performance in 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 Beta content of 20-50%, which gave ca. 50% yield of propylene. The role of Beta in 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 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.

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Publication details

The article was received on 07 Aug 2017, accepted on 07 Oct 2017 and first published on 09 Oct 2017


Article type: Paper
DOI: 10.1039/C7GC02400B
Citation: Green Chem., 2017, Accepted Manuscript
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    Direct conversion of bio-ethanol to propylene with high yield over the composite of In2O3 and zeolite Beta

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

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