Single-step synthesis of DME from syngas on CuZnAl-zeolite bifunctional catalysts: The influence of zeolite type

Qinglong Xie; Paul Chen; Pu Peng; Shiyu Liu; Peng Peng; Bo Zhang; Yanling Cheng; Yiqin Wan; Yuhuan Liu; Roger Ruan

doi:10.1039/c5ra02814k

Single-step synthesis of DME from syngas on CuZnAl-zeolite bifunctional catalysts: The influence of zeolite type

Qinglong Xie, Paul Chen, Pu Peng, Shiyu Liu, Peng Peng, Bo Zhang, Yanling Cheng, Yiqin Wan, Yuhuan Liu, Roger Ruan

Bioproducts and Biosystems Engineering

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Abstract

In this study, single-step synthesis of DME from syngas on bifunctional catalysts containing Cu-ZnO-Al₂O₃ and seven different zeolites was investigated. Various characterization techniques were used to determine the structure, reducibility, and surface acidity of the catalysts. The experimental results showed that the zeolite type had great influence on the activity, selectivity and stability of the bifunctional catalyst during the syngas-to-DME process. Zeolite properties including density of weak and strong acid sites, pore structure, and Si/Al distribution were found to affect the CO conversion and DME selectivity of the bifunctional catalyst. In addition, the deactivation of the bifunctional catalyst could be attributed to the sintering of metallic Cu and a loss of the zeolite dehydration activity.

Original language	English (US)
Pages (from-to)	26301-26307
Number of pages	7
Journal	RSC Advances
Volume	5
Issue number	33
DOIs	https://doi.org/10.1039/c5ra02814k
State	Published - 2015

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© 2015 The Royal Society of Chemistry.

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abstract = "In this study, single-step synthesis of DME from syngas on bifunctional catalysts containing Cu-ZnO-Al2O3 and seven different zeolites was investigated. Various characterization techniques were used to determine the structure, reducibility, and surface acidity of the catalysts. The experimental results showed that the zeolite type had great influence on the activity, selectivity and stability of the bifunctional catalyst during the syngas-to-DME process. Zeolite properties including density of weak and strong acid sites, pore structure, and Si/Al distribution were found to affect the CO conversion and DME selectivity of the bifunctional catalyst. In addition, the deactivation of the bifunctional catalyst could be attributed to the sintering of metallic Cu and a loss of the zeolite dehydration activity.",

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T1 - Single-step synthesis of DME from syngas on CuZnAl-zeolite bifunctional catalysts

T2 - The influence of zeolite type

AU - Xie, Qinglong

AU - Chen, Paul

AU - Peng, Pu

AU - Liu, Shiyu

AU - Peng, Peng

AU - Zhang, Bo

AU - Cheng, Yanling

AU - Wan, Yiqin

AU - Liu, Yuhuan

AU - Ruan, Roger

PY - 2015

Y1 - 2015

N2 - In this study, single-step synthesis of DME from syngas on bifunctional catalysts containing Cu-ZnO-Al2O3 and seven different zeolites was investigated. Various characterization techniques were used to determine the structure, reducibility, and surface acidity of the catalysts. The experimental results showed that the zeolite type had great influence on the activity, selectivity and stability of the bifunctional catalyst during the syngas-to-DME process. Zeolite properties including density of weak and strong acid sites, pore structure, and Si/Al distribution were found to affect the CO conversion and DME selectivity of the bifunctional catalyst. In addition, the deactivation of the bifunctional catalyst could be attributed to the sintering of metallic Cu and a loss of the zeolite dehydration activity.

AB - In this study, single-step synthesis of DME from syngas on bifunctional catalysts containing Cu-ZnO-Al2O3 and seven different zeolites was investigated. Various characterization techniques were used to determine the structure, reducibility, and surface acidity of the catalysts. The experimental results showed that the zeolite type had great influence on the activity, selectivity and stability of the bifunctional catalyst during the syngas-to-DME process. Zeolite properties including density of weak and strong acid sites, pore structure, and Si/Al distribution were found to affect the CO conversion and DME selectivity of the bifunctional catalyst. In addition, the deactivation of the bifunctional catalyst could be attributed to the sintering of metallic Cu and a loss of the zeolite dehydration activity.

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Single-step synthesis of DME from syngas on CuZnAl-zeolite bifunctional catalysts: The influence of zeolite type

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