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Solid-State NaBH4 Composites as Hydrogen Generation Material: Effect of Thermal Treatment of a Catalyst Precursor on the Hydrogen Generation Rate Full article

Journal Catalysts
ISSN: 2073-4344
Output data Year: 2020, Volume: 10, Number: 2, Article number : 201, Pages count : 12 DOI: 10.3390/catal10020201
Tags solid-state composite; sodium borohydride; hydrolysis; catalyst; cobalt; nickel
Authors Netskina Olga V. 1 , Pochtar Alena A. 1 , Komova Oxana V. 1 , Simagina Valentina I. 1
Affiliations
1 Boreskov Institute of Catalysis SB RAS (BIC SB RAS)

Funding (1)

1 Federal Agency for Scientific Organizations 0303-2016-0015

Abstract: Solid-state composites based on sodium borohydride (NaBH4) were studied for applications as hydrogen generation materials. Hydrates of cobalt and nickel chlorides subjected to a thermal treatment were added to the composites as catalyst precursors. Using thermal analysis and FTIR spectroscopy, it was shown that the amount of water removed increases with the increasing temperature. Herewith, the water molecules that remained in the samples were strongly bound to the metal and isolated from each other. According to the ultraviolet–visible (UV-vis) spectroscopy data, with the increasing temperature of the thermal pretreatment there took place a substitution of a portion of water molecules by chloride ions in the nearest environment of the metal. It appeared that it was the resulting weakening of the electrostatic field on metal that was mainly responsible for the formation of a more finely dispersed catalytic phase of amorphous cobalt boride in the reaction medium under the action of sodium borohydride. The smaller particles of the active components led to a faster rate of gas generation when water was added to the solid-state NaBH4 composites. This trend remained for both the cobalt and the nickel catalytic systems even when the activity was calculated per gram of the metal. Thus, for the preparation of solid-state NaBH4 composites, hydrates of cobalt and nickel chlorides with a low content of water should be used.
Cite: Netskina O.V. , Pochtar A.A. , Komova O.V. , Simagina V.I.
Solid-State NaBH4 Composites as Hydrogen Generation Material: Effect of Thermal Treatment of a Catalyst Precursor on the Hydrogen Generation Rate
Catalysts. 2020. V.10. N2. 201 :1-12. DOI: 10.3390/catal10020201 WOS Scopus РИНЦ AN OpenAlex
Files: Full text from publisher
Dates:
Submitted: Jan 23, 2020
Accepted: Feb 6, 2020
Published print: Feb 7, 2020
Published online: Feb 7, 2020
Identifiers:
Web of science: WOS:000519998900059
Scopus: 2-s2.0-85079465938
Elibrary: 43249069
Chemical Abstracts: 2020:479589
OpenAlex: W3004967682
Citing:
DB Citing
Scopus 20
Web of science 19
Elibrary 17
OpenAlex 21
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