Copper Ion-modified Titanium Oxide Catalysts for CO Oxidation in Lean Mixtures Full article
Journal |
Petroleum Chemistry
ISSN: 0965-5441 , E-ISSN: 1531-8532 |
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Output data | Year: 1998, Volume: 38, Number: 3, Pages: 170-177 Pages count : 8 | ||||||
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Abstract:
A set of TiO2-base Cu-Ti oxide catalysts, which showed high catalytic activity in low-temperature oxidation of CO in its lean mixtures with air, were prepared by the alkoxide technique using copper stearate and tetrahutoxytitanium as precursors. At an identical copper content in a composition, the anatase-base oxide is greatly superior to that of the rutile base in activity. The optimum copper content in catalysts providing increased activity in CO oxidation is 3-5 wt % and corresponds to the single-phase systems of the general formula CuxTi1-0.5xO2 with the anatase structure. Such systems provide virtually complete oxidation of CO in lean mixtures with air temperature 140°C and space velocity 50000 h-1. The structure of the oxides and charge states of copper were studied by X-ray diffraction, EXAFS, X-ray PES, and magnetic susceptibility techniques. The presence of two types of catalytic oxidation centers, the low-temperature (120-140°C) and the high-temperature (140-200°C) sites, involving Cu(1+) and Cu(2+) ions (bound to oxygen), respectively, is suggested
Cite:
Trusova E.A.
, Tsodikov M.V.
, Slivinskii E.V.
, Bukhtenko O.V.
, Zhdanova T.N.
, Ernandes G.G.
, Kochubei D.I.
, Goryunova I.I.
Copper Ion-modified Titanium Oxide Catalysts for CO Oxidation in Lean Mixtures
Petroleum Chemistry. 1998. V.38. N3. P.170-177. Scopus РИНЦ
Copper Ion-modified Titanium Oxide Catalysts for CO Oxidation in Lean Mixtures
Petroleum Chemistry. 1998. V.38. N3. P.170-177. Scopus РИНЦ
Original:
Трусова Е.А.
, Цодиков М.В.
, Сливинский Е.В.
, Бухтенко О.В.
, Жданова Т.Н.
, Эрнандес Г.Г.
, Кочубей Д.И.
, Горюнова И.И.
Модифицированные ионами меди Ti-оксидные катализаторы окисления CO в "бедных" смесях
Нефтехимия. 1998. Т.38. №3. С.185-193. РИНЦ
Модифицированные ионами меди Ti-оксидные катализаторы окисления CO в "бедных" смесях
Нефтехимия. 1998. Т.38. №3. С.185-193. РИНЦ
Dates:
Submitted: | Jan 30, 1998 |
Published print: | May 1, 1998 |
Identifiers:
Scopus | 2-s2.0-0347656624 |
Elibrary | 13286520 |
Citing:
DB | Citing |
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Elibrary | 1 |