eprintid: 1473185
rev_number: 22
eprint_status: archive
userid: 608
dir: disk0/01/47/31/85
datestamp: 2016-01-27 13:03:09
lastmod: 2021-09-26 22:41:08
status_changed: 2016-01-27 13:03:09
type: article
metadata_visibility: show
creators_name: Price, SW
creators_name: Geraki, K
creators_name: Ignatyev, K
creators_name: Witte, PT
creators_name: Beale, AM
creators_name: Mosselmans, JF
title: In Situ Microfocus Chemical Computed Tomography of the Composition of a Single Catalyst Particle During Hydrogenation of Nitrobenzene in the Liquid Phase.
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
divisions: F56
keywords: X-ray microspectroscopy, computed tomography, heterogeneous catalysis, liquid phase, supported catalysts
note: (C) 2015 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
abstract: Heterogeneous catalysis performed in the liquid phase is an important type of catalytic process which is rarely studied in situ. Using microfocus X-ray fluorescence and X-ray diffraction computed tomography (μ-XRF-CT, μ-XRD-CT) in combination with X-ray absorption near-edge spectroscopy (XANES), we have determined the active state of a Mo-promoted Pt/C catalyst (NanoSelect) for the liquid-phase hydrogenation of nitrobenzene under standard operating conditions. First, μ-XRF-CT and μ-XRD-CT reveal the active state of Pt catalyst to be reduced, noncrystalline, and evenly dispersed across the support surface. Second, imaging of the Pt and Mo distribution reveals they are highly stable on the support and not prone to leaching during the reaction. This study demonstrates the ability of chemical computed tomography to image the nature and spatial distribution of catalysts under reaction conditions.
date: 2015-08-17
date_type: published
official_url: http://dx.doi.org/10.1002/anie.201504227
oa_status: green
full_text_type: pub
pmcid: PMC4600245
language: eng
primo: open
primo_central: open_green
article_type_text: Journal Article
verified: verified_manual
elements_id: 1054119
doi: 10.1002/anie.201504227
language_elements: eng
lyricists_name: Beale, Andrew
lyricists_id: AMBEA17
actors_name: Beale, Andrew
actors_id: AMBEA17
actors_role: owner
full_text_status: public
publication: Angewandte Chemie International Edition
volume: 54
number: 34
pagerange: 9886-9889
event_location: Germany
issn: 1521-3773
citation:        Price, SW;    Geraki, K;    Ignatyev, K;    Witte, PT;    Beale, AM;    Mosselmans, JF;      (2015)    In Situ Microfocus Chemical Computed Tomography of the Composition of a Single Catalyst Particle During Hydrogenation of Nitrobenzene in the Liquid Phase.                   Angewandte Chemie International Edition , 54  (34)   pp. 9886-9889.    10.1002/anie.201504227 <https://doi.org/10.1002/anie.201504227>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1473185/1/In%20Situ%20Microfocus%20Chemical%20Computed%20Tomography%20of%20the%20Composition%20of%20a%20Single%20Catalyst%20Particle%20During%20Hydrogenation%20of%20Nitrobenzene%20in%20the%20Liquid%20Phase.pdf