Effect of the Structure of Ti–Sb–O Catalysts on Their Acid–Base Properties, Surface Oxygen Binding Energy, and Catalytic Properties in Propylene Ammoxidation Full article
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Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2008, Volume: 49, Number: 1, Pages: 127- 132 Pages count : 6 DOI: 10.1134/S0023158408010163 | ||
| Tags | Rutile; Antimony; Antimony Oxide; Strong Basic Site; Partial Oxidation Reaction | ||
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Abstract:
The structure of Ti-Sb-O catalysts, namely, a solid solution of antimony ions in rutile-type TiO2 and the titanium antimonate TiSb2O6, is characterized by X-ray diffraction, high-resolution electron microscopy, calorimetry, and IR spectroscopy. The structure effects on the acid-base properties and the surface oxygen binding energy are considered, as well as the correlation of these characteristics with the catalytic properties of the Ti-Sb-O system in propylene ammoxidation. The solid solution has a regular crystal structure. As a consequence, the surface has high concentrations of strong aprotic acid and strong basic sites and is characterized by a high surface oxygen binding energy. In the titanium antimonate structure, extended crystallographic shear defects cause a marked enrichment of the surface with antimony and, accordingly, an increase in the relative concentration of weak aprotic acid sites and a decrease in the surface oxygen binding energy. The changes of the structure and acid-base properties of the surface in passing from the solid solution to TiSb2O6 result in an increase in the acrylonitrile selectivity.
Cite:
Zenkovets G.A.
, Kryukova G.N.
Effect of the Structure of Ti–Sb–O Catalysts on Their Acid–Base Properties, Surface Oxygen Binding Energy, and Catalytic Properties in Propylene Ammoxidation
Kinetics and Catalysis. 2008. V.49. N1. P.127- 132. DOI: 10.1134/S0023158408010163 WOS Scopus РИНЦ ANCAN OpenAlex
Effect of the Structure of Ti–Sb–O Catalysts on Their Acid–Base Properties, Surface Oxygen Binding Energy, and Catalytic Properties in Propylene Ammoxidation
Kinetics and Catalysis. 2008. V.49. N1. P.127- 132. DOI: 10.1134/S0023158408010163 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Зенковец Г.А.
, Крюкова Г.Н.
Влияние структуры Ti-Sb-O-катализаторов на кислотно-основные свойства, прочность связи поверхностного кислорода и каталитические свойства в реакции окислительного аммонолиза пропилена
Кинетика и катализ. 2008. Т.49. №1. С.135-141. РИНЦ
Влияние структуры Ti-Sb-O-катализаторов на кислотно-основные свойства, прочность связи поверхностного кислорода и каталитические свойства в реакции окислительного аммонолиза пропилена
Кинетика и катализ. 2008. Т.49. №1. С.135-141. РИНЦ
Dates:
| Submitted: | Apr 3, 2006 |
| Accepted: | Sep 3, 2007 |
| Published print: | Jan 1, 2008 |
| Published online: | Jan 19, 2011 |
Identifiers:
| Web of science: | WOS:000253546400016 |
| Scopus: | 2-s2.0-41049100530 |
| Elibrary: | 13569398 |
| Chemical Abstracts: | 2008:342629 |
| Chemical Abstracts (print): | 148:585322 |
| OpenAlex: | W1967541424 |
Citing:
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