Reduction of Pd/ZnO catalyst and its catalytic activity for steam reforming of methanol

Yanhua Wang; Jingchang Zhang; Hengyong Xu; Xuefeng Bai

doi:10.1016/S1872-2067(07)60021-7

Reduction of Pd/ZnO catalyst and its catalytic activity for steam reforming of methanol

Yanhua Wang^*, Jingchang Zhang, Hengyong Xu, Xuefeng Bai

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

The effect of reduction temperature of the coprecipitated 15.9%Pd/ZnO catalyst on the catalytic activity for steam reforming of methanol (SRM) was studied. Methanol conversion at 523 K reached a maximum of 41.6% with a CO₂ selectivity of 94.6% and an outlet CO concentration of 1.26% over the catalyst reduced at 523573 K. Methanol conversion first increased with increasing reduction temperature, remained constant (41.6%) at reduction temperatures of 523573 K, and then sharply decreased at above 573 K because of agglomeration of the PdZn alloy. CO₂ selectivity and outlet CO molar fraction depended on the presence of the PdZn alloy, and the crystallite size of the PdZn alloy affects methanol conversion. It is proposed that the PdZn alloy and PdZnO_1-x might catalyze the SRM reaction together.

Original language	English
Pages (from-to)	234-238
Number of pages	5
Journal	Chinese Journal of Catalysis
Volume	28
Issue number	3
DOIs	https://doi.org/10.1016/S1872-2067(07)60021-7
Publication status	Published - Mar 2007
Externally published	Yes

Keywords

Active species
Palldium
PdZn alloy
Reduction
Steam reforming of methanol
Supported catalyst
Zinc oxide

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10.1016/S1872-2067(07)60021-7

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title = "Reduction of Pd/ZnO catalyst and its catalytic activity for steam reforming of methanol",

abstract = "The effect of reduction temperature of the coprecipitated 15.9%Pd/ZnO catalyst on the catalytic activity for steam reforming of methanol (SRM) was studied. Methanol conversion at 523 K reached a maximum of 41.6% with a CO2 selectivity of 94.6% and an outlet CO concentration of 1.26% over the catalyst reduced at 523573 K. Methanol conversion first increased with increasing reduction temperature, remained constant (41.6%) at reduction temperatures of 523573 K, and then sharply decreased at above 573 K because of agglomeration of the PdZn alloy. CO2 selectivity and outlet CO molar fraction depended on the presence of the PdZn alloy, and the crystallite size of the PdZn alloy affects methanol conversion. It is proposed that the PdZn alloy and PdZnO1-x might catalyze the SRM reaction together.",

keywords = "Active species, Palldium, PdZn alloy, Reduction, Steam reforming of methanol, Supported catalyst, Zinc oxide",

author = "Yanhua Wang and Jingchang Zhang and Hengyong Xu and Xuefeng Bai",

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T1 - Reduction of Pd/ZnO catalyst and its catalytic activity for steam reforming of methanol

AU - Wang, Yanhua

AU - Zhang, Jingchang

AU - Xu, Hengyong

AU - Bai, Xuefeng

PY - 2007/3

Y1 - 2007/3

N2 - The effect of reduction temperature of the coprecipitated 15.9%Pd/ZnO catalyst on the catalytic activity for steam reforming of methanol (SRM) was studied. Methanol conversion at 523 K reached a maximum of 41.6% with a CO2 selectivity of 94.6% and an outlet CO concentration of 1.26% over the catalyst reduced at 523573 K. Methanol conversion first increased with increasing reduction temperature, remained constant (41.6%) at reduction temperatures of 523573 K, and then sharply decreased at above 573 K because of agglomeration of the PdZn alloy. CO2 selectivity and outlet CO molar fraction depended on the presence of the PdZn alloy, and the crystallite size of the PdZn alloy affects methanol conversion. It is proposed that the PdZn alloy and PdZnO1-x might catalyze the SRM reaction together.

AB - The effect of reduction temperature of the coprecipitated 15.9%Pd/ZnO catalyst on the catalytic activity for steam reforming of methanol (SRM) was studied. Methanol conversion at 523 K reached a maximum of 41.6% with a CO2 selectivity of 94.6% and an outlet CO concentration of 1.26% over the catalyst reduced at 523573 K. Methanol conversion first increased with increasing reduction temperature, remained constant (41.6%) at reduction temperatures of 523573 K, and then sharply decreased at above 573 K because of agglomeration of the PdZn alloy. CO2 selectivity and outlet CO molar fraction depended on the presence of the PdZn alloy, and the crystallite size of the PdZn alloy affects methanol conversion. It is proposed that the PdZn alloy and PdZnO1-x might catalyze the SRM reaction together.

KW - Active species

KW - Palldium

KW - PdZn alloy

KW - Reduction

KW - Steam reforming of methanol

KW - Supported catalyst

KW - Zinc oxide

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U2 - 10.1016/S1872-2067(07)60021-7

DO - 10.1016/S1872-2067(07)60021-7

M3 - Article

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SN - 1872-2067

VL - 28

SP - 234

EP - 238

JO - Chinese Journal of Catalysis

JF - Chinese Journal of Catalysis

IS - 3

ER -

Reduction of Pd/ZnO catalyst and its catalytic activity for steam reforming of methanol

Abstract

Keywords

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