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Impact of Incorporation of Active Nanoporous Components or Their Precursors in a CuAlO/CuAl Ceramometal Skeleton on the Properties in the Low-Temperature Water-Gas Shift Reaction Full article

Journal ACS Omega
ISSN: 2470-1343
Output data Year: 2020, Volume: 5, Number: 32, Pages: 19928–19937 Pages count : 10 DOI: 10.1021/acsomega.9b03824
Tags CATALYSTS; DESIGN
Authors Tikhov Serguei F. 1 , Minyukova Tatyana P. 1 , Valeev Konstantin R. 1 , Cherepanova Svetlana V. 1 , Salanov Alexei N. 1 , Bakina Olga V. 2 , Pervikov Alexander 2 , Yakovlev Ilya V. 1,3 , Lapina Olga B. 1 , Sadykov Vladislav A. 1,3
Affiliations
1 Boreskov Institute of Catalysis SB RAS
2 Institute of Strength Physics and Materials Science SB RAS
3 Novosibirsk State University

Funding (2)

1 Federal Agency for Scientific Organizations 0303-2016-0013
2 Ministry of Science and Higher Education of the Russian Federation III.23

Abstract: Enhanced activity in low-temperature water-gas shift (LT-WGS) reaction of some ceramometal catalysts compared to conventional Cu–Zn–Al oxide catalyst was demonstrated. Porous ceramometals were synthesized from powdered CuAl alloys prepared by mechanical alloying with the addition of either CuAlexp powders produced by current spark explosion of Cu+Al wires or CuZnAl oxide obtained by coprecipitation. Their structural, microstructural, and textural characteristics were examined by means of X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray spectrometry, NMR, and adsorption methods, and catalytic properties were studied in the LT-WGS reaction. CuAlO/CuAl ceramometals were found to have mostly the egg-shell microstructure with the metallic cores (AlxCu1–x, Al2Cu, and Al4Cu9) and the oxide shell containing copper oxides and/or mixed oxides of copper and aluminum and, at same time, CuAlO/CuAl ceramometal with incorporated additives was found to create a more complicated microstructure. A large amount of X-ray amorphous oxides of copper and aluminum is typical for all composites. CuAl ceramometal was shown to be more active than the CuZnAl oxide catalyst in spite of a much lower specific surface area. The CuAl+CuZnAl catalyst consisting of prismatic granules showed a higher activity in comparison with CuZnAl oxide consisting of cylindrical granules. The activity of the composite granulated catalyst referred to its unit weight was more than 6-fold higher as compared to the oxide catalyst, while the activity per the surface area was found to be more than an order of magnitude higher due to much higher specific activity of small fraction and additively much lower diffusion limitation of granules.
Cite: Tikhov S.F. , Minyukova T.P. , Valeev K.R. , Cherepanova S.V. , Salanov A.N. , Bakina O.V. , Pervikov A. , Yakovlev I.V. , Lapina O.B. , Sadykov V.A.
Impact of Incorporation of Active Nanoporous Components or Their Precursors in a CuAlO/CuAl Ceramometal Skeleton on the Properties in the Low-Temperature Water-Gas Shift Reaction
ACS Omega. 2020. V.5. N32. P.19928–19937. DOI: 10.1021/acsomega.9b03824 WOS Scopus РИНЦ ANCAN PMID OpenAlex
Files: Full text from publisher
Dates:
Submitted: Nov 11, 2019
Accepted: Jul 23, 2020
Published online: Aug 7, 2020
Published print: Aug 18, 2020
Identifiers:
Web of science: WOS:000563015100002
Scopus: 2-s2.0-85094170921
Elibrary: 45195329
Chemical Abstracts: 2020:1531502
Chemical Abstracts (print): 176:410913
PMID: 32832747
OpenAlex: W3048021226
Citing:
DB Citing
Web of science 3
Scopus 3
Elibrary 6
OpenAlex 3
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