Role of the electronic state of rhodium in sodium borohydride hydrolysis / Netskina Olga V.,Kochubey Dmitry I.,Prosvirin Igor P.,Kellerman Dina G.,Simagina Valentina I.,Komova Oksana V. // JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL. - 2014. - V. 390, l. . - P. 125-132.

ISSN/EISSN:

1381-1169 / 1873-314X

Type:

Article

Abstract:

0 The activity of Rh/TiO2 catalysts subjected to a thermal treatment at different temperatures prior to their reduction has been studied in a NaBH4 hydrolysis medium. It was found that the sodium borohydride hydrolysis rate increases with increasing the treatment temperature of unreduced catalysts. The state of rhodium in reduced Rh/TiO2 has been studied by a set of physical methods. In the catalyst calcined at 300 degrees C, nanoscale electron-deficient particles of rhodium were observed on the surface of titanium dioxide. The study confirmed that the decrease in the electronic density on the metal particles was due to interfacial charge redistribution between metal and semiconducting oxide. The presence of electron-deficient Rh particles on the catalyst surface leads to an enhanced decomposition of negatively charged BH4- ions and reduction of water to hydrogen proceeding by an electrochemical mechanism. (C) 2014 Elsevier B.V. All rights reserved.

Author keywords:

Rhodium; Titanium dioxide; Sodium borohydride hydrolysis; Electron-deficient metal nanoparticles METAL-SUPPORT INTERACTION; X-RAY-ABSORPTION; HYDROGEN GENERATION; NABH4 HYDROLYSIS; FINE-STRUCTURE; DOPED TIO2; CATALYSTS; RH/TIO2; PHASE; OXIDE

DOI:

10.1016/j.molcata.2014.03.016

Web of Science ID:

ISI:000337874900017

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	AUG
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-314X
Keywords-Plus	METAL-SUPPORT INTERACTION; X-RAY-ABSORPTION; HYDROGEN GENERATION; NABH4 HYDROLYSIS; FINE-STRUCTURE; DOPED TIO2; CATALYSTS; RH/TIO2; PHASE; OXIDE
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Physical
Author-Email	netskina@catalysis.ru
ResearcherID-Numbers	Netskina, Olga/E-9267-2012
ORCID-Numbers	Netskina, Olga/0000-0002-2323-7372 Komova, Oxana/0000-0002-4071-2016 Prosvirin, Igor/0000-0002-0351-5128
Funding-Acknowledgement	Ministry of Education and Science of the Russian Federation {[}16.518.11.7019]; UrB RAS Program {[}12-c-3-1009]
Funding-Text	The Ministry of Education and Science of the Russian Federation (Contract no. 16.518.11.7019) and the UrB RAS Program (Project no. 12-c-3-1009) are acknowledged for financial support.
Number-of-Cited-References	46
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	32
Journal-ISO	J. Mol. Catal. A-Chem.
Doc-Delivery-Number	AJ7KF