消除甲烷部分氧化中催化剂热点的策略：通过降低晶格氧的反应性来提高其直接制氢活性。

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.

机构信息

Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, PR China.

出版信息

Chem Commun (Camb). 2010 Feb 14;46(6):880-2. doi: 10.1039/b920725b. Epub 2010 Jan 5.

DOI:10.1039/b920725b

PMID:20107637

Abstract

Hydrogen can be produced over Er(2)O(3) 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.

摘要

氢气可以在甲烷氧化（氧气/甲烷=26）中在 Er(2)O(3)上产生。催化剂晶格氧的反应活性在将表面羟基物种转化为氢气或水的过程中起着主要作用。在催化剂中添加稀土元素可以降低晶格氧的反应活性，从而增加氢气的产量，消除催化剂热点。