透氧膜反应器内NiO/MgO催化甲烷重整反应的途径

doi:10.3969/j.issn.1007-2861.2013.06.005

Abstract

Abstract: Reforming reaction of methane was carried out in an oxygen permeation membrane reactor, and fed with methane and Ar. A comparative analysis of the oxygen permeation performance under the condition of CH₄ diluted by Ar with 1 g 9% Ni/γ -Al₂O₃ catalyst and without catalyst was performed to investigate the reaction pathways. According to the results, the reaction pathways are deduced. The dissociation of CH₄ on catalyst first formed surface C species and H₂. The producted H₂ is then reacted with oxygen diffused or spilt over catalyst from membrane to form H₂O, causing the oxygen partial pressure to decrease, and the flux of oxygen to increase. This paper further shows the pathways of CH4 dissociation and H₂ oxidation, through catalytic partial oxidation of methane over NiO/MgO catalysts with different Ni contents in an oxygen permeation membrane reactor.

Key words: methane, oxygen permeation membrane reactor, reaction pathway, reforming reaction

CLC Number:

TQ 031.2

YANG Zhi-bin1, DING Wei-zhong2. Reaction Pathways of Reforming of Methane over NiO/MgO Catalyst in Oxygen Permeation Membrane Reactor[J]. Journal of Shanghai University（Natural Science Edition）, 2013, 19(6): 572-578.

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Reaction Pathways of Reforming of Methane over NiO/MgO Catalyst in Oxygen Permeation Membrane Reactor

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