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Acidic and catalytic properties of dealuminated zeolite Y treated with zirconyl nitrate solution
Abstract Structure, the constitution of a surface hydroxyl layer, and the acid properties and catalytic activity in n-hexane conversion were studied for dealuminated zeolites Y modified with zirconyl nitrate to have a zirconium loading of 0.2, 0.4, and 0.8 wt %. After dealumination with ammonium hexafluorosilicate solution and exchange for NH+ 4, the initial zeolites were calcined at 500–550°C and washed with an acid or alkali solution. The investigation techniques used were X-ray diffraction, thermal analysis, IR spectroscopy, X-ray photoelectron spectroscopy, and temperature-programmed ammonia desorption. It was found that the introduction of zirconium increased the relative amount of strong acid sites, thus increasing the yield of n-hexane cracking products.
Acidic and catalytic properties of dealuminated zeolite Y treated with zirconyl nitrate solution
Abstract Structure, the constitution of a surface hydroxyl layer, and the acid properties and catalytic activity in n-hexane conversion were studied for dealuminated zeolites Y modified with zirconyl nitrate to have a zirconium loading of 0.2, 0.4, and 0.8 wt %. After dealumination with ammonium hexafluorosilicate solution and exchange for NH+ 4, the initial zeolites were calcined at 500–550°C and washed with an acid or alkali solution. The investigation techniques used were X-ray diffraction, thermal analysis, IR spectroscopy, X-ray photoelectron spectroscopy, and temperature-programmed ammonia desorption. It was found that the introduction of zirconium increased the relative amount of strong acid sites, thus increasing the yield of n-hexane cracking products.
Acidic and catalytic properties of dealuminated zeolite Y treated with zirconyl nitrate solution
Kitaev, L. E. (Autor:in) / Bukina, Z. M. (Autor:in) / Yushchenko, V. V. (Autor:in) / Nesterenko, N. S. (Autor:in) / Alekseenko, L. N. (Autor:in)
Petroleum Chemistry ; 46 ; 246-256
01.07.2006
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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