In-situ carbonization synthesis and ethylene hydrogenation activity of ordered mesoporous tungsten carbide

被引：23

作者：

Cui, Xiangzhi ^{[1
]}

Zhou, Xiaoxia ^{[1
]}

Chen, Hangrong ^{[1
]}

Hua, Zile ^{[1
]}

Wu, Huixia ^{[1
]}

He, Qianjun ^{[1
]}

Zhang, Lingxia ^{[1
]}

Shi, Jianlin ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2011年 / 36卷 / 17期

基金：

中国国家自然科学基金;

关键词：

Tungsten carbide; Mesoporous materials; In-situ carbonization; Ethylene hydrogenation; ELECTROCATALYTIC ACTIVITY; CATALYTIC ACTIVITY; PT(111); BEHAVIOR; CARBON; MICROSPHERE; MOLYBDENUM; REPLICA; OXYGEN; WALLS;

D O I：

10.1016/j.ijhydene.2011.06.050

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new replication-in-situ carbonization route has been developed to synthesize mesoporous tungsten carbide using the block copolymer (poly(ethylene glycol)-block-poly (propyleneglycol)-block-poly(ethylene glycol)) in-situ present in the pore channels of mesoporous silica template as carbon source. The results indicate that the synthesized mesoporous WC has high surface area (143 m(2) g(-1)) and well-crystallized framework, and possesses high and stable catalytic activity for ethylene hydrogenation reaction. The influence of H-2/C2H4 mole ratio and space velocity on the mesoporous WC catalyst performance in the ethylene hydrogenation reaction was studied. This mesoporous WC material with high surface area and porous structure showed much better ethylene hydrogenation activity than the reference WC bought from the company, and the complete ethylene hydrogenation was reached at 250 degrees C on the prepared mesoporous WC material. Crown Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：10513 / 10521

页数：9

共 45 条

[41] Silica-Templated Synthesis of Ordered Mesoporous Tungsten Carbide/Graphitic Carbon Composites with Nanocrystalline Walls and High Surface Areas via a Temperature-Programmed Carburization Route
Wu, Zhangxiong
Yang, Yunxia
Gu, Dong
Li, Qiang
Feng, Dan
Chen, Zhenxia
Tu, Bo
Webley, Paul A.
Zhao, Dongyuan
[J]. SMALL, 2009, 5 (23) : 2738 - 2749
[42] Synthesis of replica mesostructures by the nanocasting strategy
Yang, HF
Zhao, DY
[J]. JOURNAL OF MATERIALS CHEMISTRY, 2005, 15 (12) : 1217 - 1231
[43] Zhao DY, 2004, STUD SURF SCI CATAL, V148, P139
[44] Multiphase assembly of mesoporous-macroporous membranes
Zhao, DY
Yang, PD
Chmelka, BF
Stucky, GD
[J]. CHEMISTRY OF MATERIALS, 1999, 11 (05) : 1174 - +
[45] Tungsten carbide nanofibers prepared by electrospinning with high electrocatalytic activity for oxygen reduction
Zhou, Xiaosong
Qiu, Yejun
Yu, Jie
Yin, Jing
Gao, Shang
[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2011, 36 (13) : 7398 - 7404

← 1 2 3 4 5 →