Genesis of the structure and the phase and elemental compositions of an aluminum oxide catalyst in the isomerization process of n-butylenes

Autor:	S. R. Egorova, I. A. Basheva, Alexander A. Lamberov, B. A. Kamalov, Kh. Kh. Gil’manov, E. Yu. Sitnikova, A. G. Aptikasheva
Rok vydání:	2009
Předmět:	Chemistry General Chemical Engineering Inorganic chemistry Recrystallization (metallurgy) General Chemistry Hydrothermal circulation Catalysis Metal Phase change visual_art visual_art.visual_art_medium Porosity Isomerization Aluminum oxide
Zdroj:	Theoretical Foundations of Chemical Engineering. 43:752-757
ISSN:	1608-3431 0040-5795
DOI:	10.1134/s0040579509050248
Popis:	An investigation of the changes in the characteristics of the porous structure, phase, and elemental compositions of catalyst samples for the isomerization of n-butylenes using a set of physicochemical methods has been conducted. In has been established that under hydrothermal conditions of the isomerization process, aluminum oxide recrystallization takes place, resulting in a decrease of its specific surface value and a displacement of the maximum of the distribution of pore diameters to the region of greater values. A porous structure transformation scheme has been suggested while operating the isomerization catalyst for n-butylenes. It has been supposed that the partial phase change of γ-Al2O3 into δ-Al2O3 occurring under industrial conditions of the isomerization of n-butylenes is caused by an accumulation of metal compound admixtures supplied with the feed flow.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c48794f347ae73eb9176599754274195 https://doi.org/10.1134/s0040579509050248 Zobrazit plný text záznamu Plný text ve formátu PDF