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Efficiency of high-loaded nickel catalysts modified by Mg in hydrogen storage/extraction using quinoline/decahydroquinoline pair as LOHC substrates Full article

Journal Journal of Magnesium and Alloys
ISSN: 2213-9567
Output data Year: 2024, Volume: 12, Number: 8, Pages: 3245-3263 Pages count : 19 DOI: 10.1016/j.jma.2024.07.014
Tags Mg-modified catalysts, High-loaded nickel catalyst, Layered double hydroxides, Hydrogen storage, LOHC, Dehydrogenation
Authors Koskin Anton P. 1 , Zhang Jingsong 1 , Belskaya Olga B. 2 , Bulavchenko Olga A. 1 , Konovalova Darya A. 1 , Stepanenko Sergey A. 1 , Ishchenko Arkadiy V. 1 , Danilova Irina G. 1 , Yurpalov Vyacheslav L. 2 , Larichev Yurii V. 1 , Kukushkin Roman G. 1 , Yeletsky Petr M. 1
Affiliations
1 Federal Research Center Boreskov Institute of Catalysis SB RAS
2 Center of New Chemical Technologies BIC, Boreskov Institute of Catalysis

Funding (3)

1 Ministry of Science and Higher Education of the Russian Federation FWUR-2024-0039
2 Ministry of Science and Higher Education of the Russian Federation FWUR-2024-0032
3 Ministry of Science and Higher Education of the Russian Federation FWUR-2024-0038

Abstract: An effect of Mg introduction on efficiency of high-loaded nickel catalysts in dehydrogenation of decahydroquinoline (10HQ) was investigated. 10HQ dehydrogenation is key process for the liquid organic hydrogen carrier (LOHC) storage technology using the quinoline/10HQ pair as H2-lean/H2-rich substrates. An influence of synthesis technique of Ni/Mg/Al catalysts on their properties has been demonstrated. The catalysts were synthesized through coprecipitation of Ni, Mg, Al precursors to obtain layered double hydroxides (LDH) or via synthesis of (∼72 wt%) Ni-Al2O3 system – also through coprecipitation, followed by modifying with a magnesium-containing precursor. For the catalysts of the first series, the inclusion of magnesium into LDH lattice led to a significant increase in catalytic activity in hydrogen extraction (10HQ dehydrogenation reaction). Despite the decrease in the content of catalytically active nickel, a significant increase in the yield of the dehydrogenation product was observed. This regularity is presumably associated with appearance of basic sites, that accelerates the dehydrogenation reaction. In the case of the second series, activity of pre-reduced (600 °C, H2) catalysts in dehydrogenation of 10HQ also significantly depends on a MgO content and is maximal at Mg:Ni weight ratio 0.056. Using an in-depth study of structure of the original and reduced catalyst samples (Ni-Al2O3 and Ni-MgNiOx-Al2O3), it was shown that this regularity is associated with the increased resistance of catalytically active Ni particles to agglomeration during the reductive activation. Also, using the Ni-MgNiOx-Al2O3 catalyst for hydrogen storage process (hydrogenation reaction), the possibility of deep quinoline hydrogenation (up to 10HQ) in a flow-type reactor was demonstrated for the first time.
Cite: Koskin A.P. , Zhang J. , Belskaya O.B. , Bulavchenko O.A. , Konovalova D.A. , Stepanenko S.A. , Ishchenko A.V. , Danilova I.G. , Yurpalov V.L. , Larichev Y.V. , Kukushkin R.G. , Yeletsky P.M.
Efficiency of high-loaded nickel catalysts modified by Mg in hydrogen storage/extraction using quinoline/decahydroquinoline pair as LOHC substrates
Journal of Magnesium and Alloys. 2024. V.12. N8. P.3245-3263. DOI: 10.1016/j.jma.2024.07.014 WOS OpenAlex
Dates:
Submitted: Apr 1, 2024
Accepted: Jul 16, 2024
Published online: Aug 6, 2024
Published print: Sep 23, 2024
Identifiers:
Web of science: WOS:001332540800001
OpenAlex: W4401354935
Citing: Пока нет цитирований
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