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dc.contributor.author | Egorova S. | |
dc.contributor.author | Bekmukhamedov G. | |
dc.contributor.author | Lamberov A. | |
dc.date.accessioned | 2018-09-18T20:05:45Z | |
dc.date.available | 2018-09-18T20:05:45Z | |
dc.date.issued | 2013 | |
dc.identifier.issn | 0023-1584 | |
dc.identifier.uri | https://dspace.kpfu.ru/xmlui/handle/net/136451 | |
dc.description.abstract | The crystal and pore structures of a microspherical alumina-chromium catalyst calcined at 800-1100 C were studied using a set of currently available physicochemical techniques (X-ray diffraction, lowtemperature nitrogen adsorption, diffuse reflectance UV-vis spectroscopy, Raman spectroscopy, and EPR spectroscopy); the state of its active component and the catalytic properties in isobutane dehydrogenation were examined. As the calcination temperature was increased from 800 to 900-1000 C, the properties of the catalyst were improved as a result of the formation of Cr2O3 clusters in an optimum amount and a decrease in the surface acidity of the catalyst due to the dehydroxylation and phase transformations of the aluminum oxide support. Calcination at 1100 C was accompanied by a decrease in the yield of isobutylene as a result of the formation of inactive macrocrystalline chromium (III) oxide and a chromium species inaccessible to reacting molecules; this chromium species was encapsulated in closed pores as the constituent of a solid solution of α-Al2O3-Cr2O3. © 2013 Pleiades Publishing, Ltd. | |
dc.relation.ispartofseries | Kinetics and Catalysis | |
dc.title | Effect of high-temperature treatment on the properties of an alumina-chromium catalyst for the dehydrogenation of lower paraffins | |
dc.type | Article | |
dc.relation.ispartofseries-issue | 1 | |
dc.relation.ispartofseries-volume | 54 | |
dc.collection | Публикации сотрудников КФУ | |
dc.relation.startpage | 49 | |
dc.source.id | SCOPUS00231584-2013-54-1-SID84873350780 |