Metal-Support Interaction in Na-W-Mn/SiO2 Catalyst

Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (5): 814.

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Metal-Support Interaction in Na-W-Mn/SiO₂ Catalyst

CHEN Hong-Shan¹, NIU Jian-Zhong², ZHANG Bing², LI Shu-Ben²

1. Departmentof Physics, Northwest Normal University, Lanzhou 730070, China;
2. State Key Laboratory for Oxo Synthesisand Selective Oxidation, Lanzhou Instituteof Chemical Physics, Chinese Academyof Sciences, Lanzhou 730000, China

Received:2000-04-06 Online:2001-05-24 Published:2001-05-24

Abstract

Abstract: The interaction of metal components with silica support in Na-W-Mn/SiO₂ was studied. The inducing effect of sodium makes amorphous silica transferred to α-cristobalite during calcination, and the specific surface area decreases enormously as a consequence. When sodium alone is loaded, the silica has almost no micropores retained after calcination. When tungsten is loaded together with sodium, quite regular pores at the size of micron can be formed in silica during the phase transition.

Key words: Na-W-Mn/SiO₂, Oxidative coupling of methane, Metal-support interaction

CLC Number:

O643

TrendMD:

CHEN Hong-Shan, NIU Jian-Zhong, ZHANG Bing, LI Shu-Ben . Metal-Support Interaction in Na-W-Mn/SiO₂ Catalyst[J]. Chem. J. Chinese Universities, 2001, 22(5): 814.

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Metal-Support Interaction in Na-W-Mn/SiO₂ Catalyst

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