A. V. Kurochkin, K. A. Seromlyanova, M. M. Selivanova, D. N. Malyshev, A. D. Tereshkina, N. N. Lobanov, E. B. Markova, A. G. Cherednichenko
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The study investigates propane conversion in the presence of rare-earth metal zirconates Ln2Zr2O7 (Ln = La, Gd, and Lu) prepared by high-temperature solid-phase synthesis at 500, 1000, and 1500°C. In the La2Zr2O7 → Gd2Zr2O7 → Lu2Zr2O7 series, the phase transitions were found to follow the pyrochlore → defective fluorite → δ-phase route. This changed the parameters of the crystalline and local structures and, in particular, led to the appearance of oxygen vacancies in pyrochlore-based compounds. As a result of the structural changes, propane dehydrogenation prevailed over propane degradation. Therefore, the Lu2Zr2O7 catalyst exhibited a higher propylene selectivity (up to 65%) than La2Zr2O7, with 100% propane conversion being achieved.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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