Effect of irradiation with gamma-rays on the surface and catalytic properties of SiO2-Al2O3 and Li2O-impregnated SiO2-Al2O3 systems
作者： A.M. Youssef , M.A. El Kherbawy , S.E. Samra
DOI: 10.1016/1359-0197(92)90224-4
关键词: Adsorption 、 Gamma ray 、 Coprecipitation 、 Inorganic chemistry 、 Irradiation 、 Catalysis 、 Heterogeneous catalysis 、 Pyridine 、 Nitrogen 、 Chemistry
摘要: Abstract Coprecipitated SiO 2 -Al O 3 (Al =33.2 mol%) and Li O-impregnated containing 1, 2.5 5 mol% were prepared. The textural properties determined by following the adsorption of nitrogen at 77K. surface acidities from pyridine 423 K. catalytic conversion isopropanol on catalyst prepared was carried out using pulse microcatalytic technique. area decreased pore size increased upon irradiation with γ-rays (dose⩾ 30 M rad). acidity impregnation and/or γ-rays.
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sci-hub.se 参考文章(4)
Ruud Snel, Control of the porous structure of amorphous silica-alumina : 3. The influence of pore-regulating reagents Applied Catalysis. ,vol. 12, pp. 347- 357 ,(1984) , 10.1016/S0166-9834(00)81672-3
Stephen Brunauer, P. H. Emmett, Edward Teller, Adsorption of Gases in Multimolecular Layers Journal of the American Chemical Society. ,vol. 60, pp. 309- 319 ,(1938) , 10.1021/JA01269A023
Th. El-Nabarawy, G.A. El-Shobaky, A.M. Dessouki, Effects of γ-irradiation on thermal and textural properties of Na-Y zeolites Thermochimica Acta. ,vol. 111, pp. 249- 255 ,(1987) , 10.1016/0040-6031(87)88051-6
Hannelore Vinek, Dehydration and Dehydrogenation Reactions over A12O3, SiO2and Alkali Impregnated A12O3and SiO2 Zeitschrift für Physikalische Chemie. ,vol. 121, pp. 249- 256 ,(1980) , 10.1524/ZPCH.1980.121.2.249