FTIR Studies of CO Chemisorption and Reactivity on Rh/SiO2 Catalyst Promoted by Niobium Oxide

FTIR Studies of CO Chemisorption and Reactivity on Rh/SiO2 Catalyst Promoted by Niobium Oxide Научная публикация

Журнал

Journal of Molecular Catalysis
ISSN: 0304-5102

Вых. Данные

Год: 1994, Том: 92, Номер: 2, Страницы: 217-233 Страниц : 17 DOI: 10.1016/0304-5102(94)00072-7

Авторы

Alekseev O.S. ^1,2 , Beutel T. ¹ , Paukshtis E.A. ² , Ryndin Yu.A. ² , Likholobov V.A. ² , Knözinger H. ¹

Организации

1	Institut fur Physikalische Chemie, Universitat Munchen, Sophienstrasse 11, 80333 Munchen, Germany
2	Boreskov Institute of Catalysis, Novosibirsk 630090

(Rh + Nb)/SiO2 catalysts were obtained by anchoring of nanometer size Rh particles on surface low-valent Nbn + ions. These materials exhibit the following specific features compared to Rh/SiO2: a low Rh surface coverage by chemisorbed hydrogen and carbon oxide; a high-frequency shift of linear CO absorption band and appearance of two absorption bands of a C- and O-bonded CO at 1704 and 1652 cm−1. On exposure to H2, the stability of surface carbonyls increases in the sequence: Rh-CO-Nbn + < Rh-CO ≤ Rh2(CO) < Rh+(CO)2. The possible role of C- and O-bonded CO complexes in the conversion of syngas on supported rhodium catalysts promoted by transition element oxides is discussed.

Alekseev O.S. , Beutel T. , Paukshtis E.A. , Ryndin Y.A. , Likholobov V.A. , Knözinger H.
FTIR Studies of CO Chemisorption and Reactivity on Rh/SiO2 Catalyst Promoted by Niobium Oxide
Journal of Molecular Catalysis. 1994. V.92. N2. P.217-233. DOI: 10.1016/0304-5102(94)00072-7 WOS Scopus РИНЦ CAPlusCA OpenAlex Sciact

Поступила в редакцию:	22 февр. 1994 г.
Принята к публикации:	15 апр. 1994 г.
Опубликована в печати:	30 авг. 1994 г.
Опубликована online:	2 окт. 2001 г.

Web of science:	WOS:A1994PE39100011
Scopus:	2-s2.0-0028481909
РИНЦ:	31611319
Chemical Abstracts:	1994:604758
Chemical Abstracts (print):	121:204758
OpenAlex:	W1990219048
Sciact:	12875

БД	Цитирований
Scopus	15
OpenAlex	12