Surface of a catalyst in a gas phase. (May 2016)

• Record Type: Journal Article
• Authors: Tang, Yu; Nguyen, Luan; Li, Yuting; Wang, Nan; Tao, Franklin (Feng)
• Is Part Of: Current opinion in chemical engineering. Volume 12(2016)
• Page Start: 52
• Page End: 61
• Publication Date: 2016-05
• Subjects: Chemical engineering -- Periodicals; Chemical engineering; Periodicals; 660.05
• DOI: 10.1016/j.coche.2016.02.007
• Languages: English
• ISSNs: 2211-3398

Abstract

Highlights: Active surface of a catalyst could be formed in a pretreatment or/and a reaction with one or more reactants. Restructuring is one important surface process of some catalysts. A correlation between a catalyst surface and its corresponding catalytic performance can be established upon the identification of active surface. Abstract : Chemistry and structure of surface of a catalyst under a reaction condition is the crucial information for understanding catalytic mechanism since in many cases an authentic, active surface catalyzing a catalytic reaction is formed in a pretreatment or/and in a reaction between nominal catalyst and reactants. Ambient pressure X-ray photoelectron spectroscopy can be used to track surface of a catalyst under a reaction condition as the instrumentations in the last a few decades have made characterization of catalyst surface in a gas phase at Torr pressure or higher possible. It can characterize surface chemistry of a catalyst including surface composition, surface phase and surface oxygen vacancies and other information under a reaction condition and track their evolutions when the reaction condition is changed to another.