ORTHO-PARA HYDROGEN CONVERSION CATALYZED BY GOLD NANOPARTICLES

1 ABKHALIMOV Evgeny
Co-authors:
2 BOEVA Olga 2 ODINTZOV Alexandr 1 SOLOVOV Roman 2 ZHAVORONKOVA Ksenia 1 ERSHOV Boris
Institutions:
1 A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Science, Moscow, Russia
2 Mendeleev University of Chemical Technology of Russia, Moscow, Russia
Conference:
9th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 18th - 20th 2017
Proceedings:
Proceedings 9th International Conference on Nanomaterials - Research & Application
Pages:
308-314
ISBN:
978-80-87294-81-9
ISSN:
2694-930X
Published:
8th March 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
66 views / 33 downloads
Abstract

We set ourselves the task to perform a systematic study of the ortho–para conversion of protium catalyzed by γ-Al2O3-supported gold nanoparticles of various sizes at a temperature of 77 K. Our results unambiguously indicate that nanoparticles, as opposed to the bulk metal, shown a high catalytic activity. It is exhibited that all Au/γ-Al2O3 catalysts with nanoparticles of 4.6-40.1 nm sizes show very high catalytic activity in ortho-para conversion reaction. The calculated specific catalytic activity Ksp of ortho-para hydrogen conversion were (3.9 ± 1.2) × 1014 mol cm-2∙s-1 for all of the catalysts tested. The conversion of o-protium to p-protium catalyzed by gold nanoparticles does not depend on the nanoparticle size.

Keywords: gold nanoparticles, protium, ortho-para conversion, size effect, hydrogen

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