Water effect in hydrogen production from methane

被引：14

作者：

Acha, E. ^{[1
]}

Requies, J. ^{[1
]}

Barrio, V. L. ^{[1
]}

Cambra, J. F. ^{[1
]}

Gueemez, M. B. ^{[1
]}

Arias, P. L. ^{[1
]}

机构：

[1] Univ Basque Country UPV EHU, Chem Engn & Environm Dept, Bilbao 48013, Spain

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 20期

关键词：

Hydrogen; Nickel; Methane; CPO; Wet-CPO; SR; CATALYTIC PARTIAL OXIDATION; SYNTHESIS GAS; PART I; TEMPERATURE; REACTOR;

D O I：

10.1016/j.ijhydene.2010.06.041

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Ni/MgO and Ni/Al2O3 catalysts were prepared, by wet impregnation, to compare their performance in hydrogen production from methane CPO, wet-CPO and SR. The catalytic activity was tested at 1073 K, 1 bar and 600-1200 h(-1). Fresh and used catalysts were characterized by different techniques. Both supports, as expected, had a low surface area (27.1 m(2)/g MgO and 6.2 m(2)/g alpha-Al2O3), as determined by BET method. The images obtained with SEM and TEM revealed that the Ni was more dispersed in the MgO support than in the Al2O3 one. By XRD a strong interaction, as solid-solution, between NiO and MgO was found in the 30Ni/MgO and 40Ni/MgO catalysts. The fresh 40Ni/Al2O3 reduced catalyst was partially reduced. But after the activity tests the stability of the reduced Ni became bigger. Some Ni sintering was also observed in the 40Ni/Al2O3 after the wet-CPO and SR tests. The behaviour of the three catalysts was very good in CPO methane conversion (90-93%), but the gradual increase of the steam to carbon ratio, wet-CFO and SR, affected negatively the conversion. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

引用

页码：11525 / 11532

页数：8

共 30 条

[1]

Reactor modeling to simulate catalytic partial oxidation and steam reforming of methane.: Comparison of temperature profiles and strategies for hot spot minimization [J].