Dehydrogenation of ammonia borane catalyzed by in situ synthesized Fe-Co nano-alloy in aqueous solution

被引：43

作者：

Qiu, F. Y. ^{[1
]}

Wang, Y. J. ^{[1
]}

Wang, Y. P. ^{[1
]}

Li, L. ^{[1
]}

Liu, G. ^{[1
]}

Yan, C. ^{[1
]}

Jiao, L. F. ^{[1
]}

Yuan, H. T. ^{[1
]}

机构：

[1] Nankai Univ, Key Lab Adv Energy Mat Chem MOE, Inst New Energy Mat Chem, Tianjin 300071, Peoples R China

来源：

CATALYSIS TODAY | 2011年 / 170卷 / 01期

关键词：

Fe(1-x)Co(x) alloys; Catalysts; In situ synthesized; Hydrolysis; Ammonia borane; Hydrogen generation; HYDROGEN GENERATION SYSTEM; COBALT(0) NANOCLUSTERS CATALYST; HYDROLYTIC DEHYDROGENATION; PALLADIUM(0) NANOCLUSTERS; STABILIZED RUTHENIUM(0); ROOM-TEMPERATURE; NANOPARTICLES; STORAGE; EFFICIENT; DISSOCIATION;

D O I：

10.1016/j.cattod.2011.02.026

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this paper, a series of Fe(1-x)Co(x) alloys (x = 0, 0.3, 0.5, 0.6, 0.7, 1) is in situ synthesized by a chemical reduction method and used as catalysts for generating hydrogen from aqueous solution of ammonia borane (NH(3)BH(3)) at room temperature. XRD and TEM characterizations reveal that these Fe(1-x)Co(x) nano-alloys are amorphous and ultrafine. The hydrogen generation measurements show that in situ synthesized Fe(1-x)Co(x) alloys exhibit excellent catalytic properties. The hydrogen generation rate of Fe(0.3)Co(0.7) alloy can reach to the maximum of 8945.5 ml min(-1) g(-1) at 293 K and the activation energy is only 16.30 kJ mol(-1). Furthermore, the hydrolysis of NH(3)BH(3) is completed within 1.8 min. The results are better than Fe, Co nano-particles and ex situ synthesized samples, which could be attributed to electron transfer from Fe to active Co sites, and improvement in the dispersion of the catalyst with Fe(2)O(3). (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：64 / 68

页数：5

共 35 条

[1] A safe, portable, hydrogen gas generator using aqueous borohydride solution and Ru catalyst [J].