Hydrogen production by steam reforming of DME over Ni-based catalysts modified with vanadium

被引：44

作者：

Gonzalez-Gil, Rafael ^{[1
,2
]}

Herrera, Concepcion ^{[2
]}

Angeles Larrubia, Maria ^{[2
]}

Kowalik, Pawel ^{[3
]}

Pieta, Izabela S. ^{[1
]}

Alemany, Luis J. ^{[2
]}

机构：

[1] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland

[2] Univ Malaga, Fac Ciencias, Dept Ingn Quim, E-29071 Malaga, Spain

[3] New Chem Syntheses Inst, PL-24110 Pulawy, Poland

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2016年 / 41卷 / 43期

关键词：

Hydrogen production; Methanol steam reforming; Dimethyl ether steam reforming; Vanadium; Ni catalysts; DIMETHYL ETHER DME; PARTIAL OXIDATION; SUPPORTED NI; METHANOL; HYDROLYSIS; METAL; SPINEL; FUEL;

D O I：

10.1016/j.ijhydene.2016.05.074

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：

Dimethyl ether steam reforming (DME-SR) for hydrogen production has been studied over V-Ni/Al2O3 catalysts as part of an investigation aimed at the development of effective technology based on second generation of biofuels. Methanol steam reforming (MeOH-SR) was investigated as a step of the DME-SR process. High activity in the MeOH-SR was observed and two different mechanism depending on temperature and influenced by the vanadium content (0.5, 1 and 3%) was evidenced: direct methanol decomposition to CO and H-2 was observed at low temperature and low vanadium content and methanol steam reforming reaction occurs majorly to give an almost stoichiometric H-2/CO2 ratio at moderate to high temperature (400 degrees C) over 3VNi. DME conversion is complete at 500 degrees C over VNi catalysts in DME-SR, as a two steps reaction: DME hydrolysis and MeOH-SR giving an H-2 rich gas reformate generated with a H2 selectivity c.a. 60-70% over 0.5VNi and 3VNi, values maintained during 4.5 h of activity in the same reaction conditions with no signs of deactivation or significant coke formation over catalyst surface. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：19781 / 19788

页数：8

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