Structure and catalytic properties of Ni/MWCNTs and Ni/AC catalysts for hydrogen production via ammonia decomposition

被引：89

作者：

Zhang, Hui ^{[1
]}

Alhamed, Yahia Abobakor ^{[1
,2
]}

Kojima, Yoshitsugu ^{[1
,3
]}

Al-Zahrani, Abdulrahim Ahmed ^{[1
,2
]}

Miyaoka, Hiroki ^{[3
]}

Petrov, Lachezar Angelov ^{[1
]}

机构：

[1] King Abdulaziz Univ, SABIC Chair Catalysis, Jeddah 21589, Saudi Arabia

[2] King Abdulaziz Univ, Fac Engn, Dept Chem & Mat Engn, Jeddah 21589, Saudi Arabia

[3] Hiroshima Univ, Inst Adv Mat Res, Higashihiroshima 7398530, Japan

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 01期

关键词：

Ni/MWCNTs catalyst; Hydrogen production; Ammonia decomposition; Ni/AC catalyst; COX-FREE HYDROGEN; NH3; DECOMPOSITION; CARBON NANOTUBES; PARTICLE-SIZE; RU CATALYST; GENERATION; NANOPARTICLES; NANOFIBERS; KINETICS; CLUSTERS;

D O I：

10.1016/j.ijhydene.2013.10.004

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：

The structure and catalytic properties of nickel catalysts supported on multi-wall carbon nanotubes (MWCNTs) and on three different types of activated carbon (AC) were studied. The surface areas of AC carriers were defining the size of supported nickel particles. Large surface area of AC led to small Ni nanoparticles and high Ni dispersion. Turnover frequency (TOFNH3) of ammonia decomposition decreased with decreasing of Ni particle size. The highest degree of ammonia conversion was observed on Ni/AC prepared by using of AC support with largest surface area. The catalytic activity of Ni/MWCNTs was much higher than catalytic activity of the studied Ni/AC catalysts. The synergic nickel-support interaction and special electronic conductivity properties of MWCNTs were responsible for high catalytic activity of NVMWCNTs catalyst. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：277 / 287

页数：11

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