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Catalysts 2017, 7(2), 58; doi:10.3390/catal7020058

Time Resolved Operando X-ray Techniques in Catalysis, a Case Study: CO Oxidation by O2 over Pt Surfaces and Alumina Supported Pt Catalysts

Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
Academic Editor: Juan J. Bravo-Suarez
Received: 26 September 2016 / Revised: 24 January 2017 / Accepted: 26 January 2017 / Published: 14 February 2017
(This article belongs to the Special Issue In Situ and Operando Characterization in Catalysis)

Abstract

The catalytic oxidation of CO by O2 to form CO2 over Pt surfaces and supported catalysts is one of the most studied catalytic reactions from both fundamental and applied points of view. This review aims to show how the application of a range of time resolved, X-ray based techniques, such as X-ray diffraction (XRD), Surface X-ray diffraction (SXRD), total X-ray scattering/pair distribution function (PDF), X-ray absorption (XAFS), X-ray emission (XES), and X-ray photoelectron spectroscopies (XPS), applied under operando conditions and often coupled to adjunct techniques (for instance mass spectrometry (MS) and infrared spectroscopy (IR)) have shed new light on the structures and mechanisms at work in this most studied of systems. The aim of this review is therefore to demonstrate how a fusion of the operando philosophy with the ever augmenting capacities of modern synchrotron sources can lead to new insight and catalytic possibilities, even in the case of a process that has been intensely studied for almost 100 years. View Full-Text
Keywords: operando; platinum; carbon monoxide; oxidation; aluminium oxide; surface chemistry; synchrotron X-ray techniques; combined techniques; catalysis operando; platinum; carbon monoxide; oxidation; aluminium oxide; surface chemistry; synchrotron X-ray techniques; combined techniques; catalysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Newton, M.A. Time Resolved Operando X-ray Techniques in Catalysis, a Case Study: CO Oxidation by O2 over Pt Surfaces and Alumina Supported Pt Catalysts. Catalysts 2017, 7, 58.

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