Article Back

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:
388 views / 522 downloads
View Full-text Download PDF
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

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Scroll to Top