Correlation Between the Content of Surface Hydride Complexes of Ttitanium in a Ti/SiO2 Catalyst and Its Activity in Hydrogenation ArticleGenre_short.LETTER
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Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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Output data | Year: 1985, Volume: 26, Number: 5, Pages: 1102-1103 Pages count : 2 | ||
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Abstract:
Complexes with Ti-H and Zr-H bonds on the surfaces of oxides may be obtained by heating bound organometallic compounds of Ti or Zr under vacuum or in an atmosphere of hydrogen. The surface hydrides are the precursors for active centers for olefin polymerization, but their role in hydrogenation reactions is unclear. In this work, a comparison is made between the activities of Ti/SiO2 catalysts in hydrogenation reactions and the number of Ti-H bonds. A significant feature of catalysts containing surface Ti-H bonds is their relatively high activity in hydrogenation of benzene, comparable with the activity of Ni/SiO2. In this work the fact of benzene hydrogenation of bound mononuclear complexes is established. The sole detected product of benzene hydrogenation on Ti/SiO2 is cyclohexane. This is due to the fact that the rate of cyclohexene hydrogenation is four orders of magnitude greater than that of benzene. The correlat5ion between hydrogenation activity and Ti-H content provides a basis for proposing that all the surface complexes with Ti-H bonds are active hydrogenation centers. Low-valency Ti ions not bonded to hydride hydrogen are not active in hydrogenation.
Cite:
Ermakov Y.I.
, Alekseev O.S.
, Shmachkov V.A.
, Sobolev V.I.
, Ry'ndin Y.A.
Correlation Between the Content of Surface Hydride Complexes of Ttitanium in a Ti/SiO2 Catalyst and Its Activity in Hydrogenation
Kinetics and Catalysis. 1985. V.26. N5. P.1102-1103. WOS Scopus РИНЦ
Correlation Between the Content of Surface Hydride Complexes of Ttitanium in a Ti/SiO2 Catalyst and Its Activity in Hydrogenation
Kinetics and Catalysis. 1985. V.26. N5. P.1102-1103. WOS Scopus РИНЦ
Original:
Ермаков Ю.И.
, Алексеев О.С.
, Шмачков В.А.
, Соболев В.И.
, Рындин Ю.А.
Корреляция между содержанием поверхностных гидридных комплексов титана в Ti/SiO₂ катализаторе и его активностью в гидрировании
Кинетика и катализ. 1985. Т.26. №5. С.1270-1271. РИНЦ
Корреляция между содержанием поверхностных гидридных комплексов титана в Ti/SiO₂ катализаторе и его активностью в гидрировании
Кинетика и катализ. 1985. Т.26. №5. С.1270-1271. РИНЦ
Dates:
Submitted: | Jan 24, 1985 |
Published print: | Sep 1, 1985 |
Identifiers:
Web of science | WOS:A1985C840500027 |
Scopus | 2-s2.0-0022127350 |
Elibrary | 30603143 |
Citing:
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