Revisiting Carbon Based Metallic Compounds – Nanoscale Surface Science and Environmental Catalysis

Abstract:

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Catalytic ability on 12 kinds of carbide powders was investigated at room temperature using NOx gas degradation. They are largely classified into two groups, depending on whether the reaction involves a nitrogen gas in air or not. The carbon dangling bonds largely contribute to the reaction, while the accompanied metal atoms play an important role for adsorbing/dissociating nitrogen gas. Mechanical milling or annealing, as long as without agglomeration, is an effective method for activating powder catalysis, producing new surfaces with plenty catalytic sites. A new concept of catalysis is presented, based on the Schottky barrier-like model, where the charge imbalance is produced at the interface between the non-uniform thin oxide and the carbide.

Info:

Periodical:

Materials Science Forum (Volumes 638-642)

Main Theme:

Edited by:

T. Chandra, N. Wanderka, W. Reimers , M. Ionescu

Pages:

858-863

DOI:

10.4028/www.scientific.net/MSF.638-642.858

Citation:

H. Okumura et al., "Revisiting Carbon Based Metallic Compounds – Nanoscale Surface Science and Environmental Catalysis", Materials Science Forum, Vols. 638-642, pp. 858-863, 2010

Online since:

January 2010

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$35.00

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