Strategy to eliminate catalyst hot-spots in the partial oxidation of methane: enhancing its activity for direct hydrogen production by reducing the reactivity of lattice oxygen

Cun Wen; Yi Liu; Yun Guo; Yanqin Wang; Guanzhong Lu

doi:10.1039/B920725B

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Strategy to eliminate catalyst hot-spots in the partial oxidation of methane: enhancing its activity for direct hydrogen production by reducing the reactivity of lattice oxygen†

Cun Wen,^a Yi Liu,^a Yun Guo,*^a Yanqin Wang^a and Guanzhong Lu*^a

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* Corresponding authors

^a Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, P. R. China
E-mail: gzhlu@ecust.edu.cn, yunguo@ecust.edu.cn
Fax: +86-21-64253824

Abstract

Hydrogen can be produced over Er₂O₃ in methane oxidation (oxygen/methane = 26). The reactivity of lattice oxygen in the catalyst plays a main role in the conversion of surface hydroxyl species to hydrogen or water. Adding a rare earth element into a catalyst can reduce the reactivity of lattice oxygen, resulting in increased hydrogen production, to eliminate catalyst hot-spots.

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Supplementary files

Experimental section; hydrogen yield in the oxidation of methane on different rare earth oxides (Table S1); MS signals of methane and CO ₂, CO, H ₂O, and H ₂ over Mn ₃O ₄ in the CH ₄ pulse experiment at 650 ?C (Fig. S1); MS signals of CO and CO ₂ in an isotopic oxygen tracer experiment with a mixture of ¹⁸O ₂ and CH ₄ on Er ₂O ₃ at 650 ?C (Fig. S2); H ₂-TPR profiles of Mn?Er?O catalysts with different Mn : Er atom ratios (Fig. S3) PDF (620K)

Article information

DOI: https://doi.org/10.1039/B920725B
Article type: Communication
Submitted: 07 Oct 2009
Accepted: 07 Dec 2009
First published: 05 Jan 2010

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Chem. Commun., 2010,46, 880-882

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Strategy to eliminate catalyst hot-spots in the partial oxidation of methane: enhancing its activity for direct hydrogen production by reducing the reactivity of lattice oxygen

C. Wen, Y. Liu, Y. Guo, Y. Wang and G. Lu, Chem. Commun., 2010, 46, 880 DOI: 10.1039/B920725B

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Chemical Communications

Strategy to eliminate catalyst hot-spots in the partial oxidation of methane: enhancing its activity for direct hydrogen production by reducing the reactivity of lattice oxygen†

Abstract

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Strategy to eliminate catalyst hot-spots in the partial oxidation of methane: enhancing its activity for direct hydrogen production by reducing the reactivity of lattice oxygen

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