Multi-Length Scale 5D Diffraction Imaging of Ni–Pd/CeO2–ZrO2/Al2O3 Catalyst During Partial Oxidation of Methane | Sciact - CRIS-system of Boreskov Institute of Catalysis

Multi-Length Scale 5D Diffraction Imaging of Ni–Pd/CeO2–ZrO2/Al2O3 Catalyst During Partial Oxidation of Methane Full article

Journal

Journal of Materials Chemistry A, Materials for Energy and Sustainability
ISSN: 2050-7488 , E-ISSN: 2050-7496

Output data

Year: 2021, Volume: 9, Number: 18, Pages: 11331-11346 Pages count : 16 DOI: 10.1039/d1ta01464a

Tags

Ni-BASED CATALYSTS; FISCHER-TROPSCH SYNTHESIS; SYNTHESIS GAS; COKE FORMATION; COMPUTED-TOMOGRAPHY; HYDROGEN-PRODUCTION; SYNGAS PRODUCTION; PHYSICOCHEMICAL PROPERTIES; Ni/CeO2-Al2O3 CATALYSTS; SUPPORT COMPOSITION

Authors

Matras Dorota ^1,2,8,9 , Vamvakeros Antonis ^3,4,5 , Jacques Simon D.M. ³ , di Michiel Marco ⁴ , Middelkoop Vesna ⁶ , Ismagilov Ilyas Z. ⁷ , Matus Ekaterina V. ⁷ , Kuznetsov Vadim V. ⁷ , Cernik Robert J. ¹ , Beale Andrew M. ^2,3,5

Affiliations

1	School of Materials, University of Manchester, Manchester, Lancashire M13 9PL, UK
2	Research Complex at Harwell, Harwell Science and Innovation Campus, Rutherford Appleton Laboratory, Didcot, Oxon, UK
3	Finden Limited, Merchant House, 5 East St Helen Street, Abingdon, UK
4	ESRF- The European Synchrotron, Grenoble, France
5	Department of Chemistry, University College London, 20 Gordon Street, London, UK
6	Flemish Institute for Technological Research, VITO NV, Boeretang 200, 2400 Mol, Belgium
7	Boreskov Institute of Catalysis SB RAS, Pr. Akademika Lavrentieva 5, 630090 Novosibirsk, Russia
8	The Faraday Institution, Quad One, Harwell Science and Innovation Campus
9	Diamond Light Source, Harwell Science and Innovation Campus, Didcot

Funding (3)

1	European Commission	679933 H2020-SPIRE-2015 MEMERE
2	Engineering and Physical Sciences Research Council	EP/R026815/1
3	Engineering and Physical Sciences Research Council	EP/S016481/1

A 5D diffraction imaging experiment (with 3D spatial, 1D time/imposed operating conditions and 1D scattering signal) was performed with a Ni–Pd/CeO2–ZrO2/Al2O3 catalyst. The catalyst was investigated during both activation and partial oxidation of methane (POX). The spatio-temporal resolved diffraction data allowed us to obtain unprecedented insight into the behaviour and fate of the various metal and metal oxide species and how this is affected by the heterogeneity across catalyst particles. We show firstly, how Pd promotion although facilitating Ni reduction, over time leads to formation of unstable Ni–Pd metallic alloy, rendering the impact of Pd beyond the initial reduction less important. Furthermore, in the core of the particles, where the metallic Ni is primarily supported on Al2O3, poor resistance towards coke deposition was observed. We identified that this preceded via the formation of an active yet metastable interstitial solid solution of Ni–C and led to the exclusive formation of graphitic carbon, the only polymorph of coke observed. In contrast, at the outermost part of the catalyst particle, where Ni is predominantly supported on CeO2–ZrO2, the graphite formation was mitigated but sintering of Ni crystallites was more severe.

Matras D. , Vamvakeros A. , Jacques S.D.M. , di Michiel M. , Middelkoop V. , Ismagilov I.Z. , Matus E.V. , Kuznetsov V.V. , Cernik R.J. , Beale A.M.
Multi-Length Scale 5D Diffraction Imaging of Ni–Pd/CeO2–ZrO2/Al2O3 Catalyst During Partial Oxidation of Methane

Journal of Materials Chemistry A, Materials for Energy and Sustainability. 2021. V.9. N18. P.11331-11346. DOI: 10.1039/d1ta01464a WOS Scopus РИНЦ AN OpenAlex

Full text from publisher

Submitted:	Feb 18, 2021
Accepted:	Apr 21, 2021
Published online:	Apr 22, 2021
Published print:	May 14, 2021

Web of science:	WOS:000644940300001
Scopus:	2-s2.0-85105757734
Elibrary:	46091924
Chemical Abstracts:	2021:930746
OpenAlex:	W3157500250

DB	Citing
Web of science	13
Scopus	14
Elibrary	14
OpenAlex	16