دانلود مقاله Optimization of a single step method for synthesize of zeolite A from natural clinoptilolite and industrial grade chemicals
سال انتشار: ۱۳۸۷
محل انتشار: همایش بین المللی ژئولیت ایران
تعداد صفحات: ۷
Hossein Kazemian – a. R&D Lab. Of SPAG Co., Technology incubator, Sci & Technol. Park of Tehran University, Tehran, Iran, and NSTRI, P.O.B.: 11365-3486., Tehran – Iran
farshid farhadi – a. R&D Lab. Of SPAG Co., Technology incubator, Sci & Technol. Park of Tehran University, Tehran, Iran, and NSTRI, P.O.B.: 11365-3486., Tehran – Iran
masoud kazemi – Department of Chemistry, Amir Kabir University.(Tehran Polytechnics ), Tehran, IRAN
condition by addition of appropriate amounts of industrial grade sodium hydroxide and sodium aluminate.
Effect of different parameters like as temperature, sodium hydroxide concentration, solid/liquid (S/L) ratio
(the ratio of weight of clinoptilolite; g; to the volume of sodium hydroxide solution; ml,), and contact time on
the final product were investigated. The formation of zeolite A was ascertained by X-ray powder diffraction
(XRD) and X-ray florescence (XRF) techniques. According to the results obtained of characterization tests
as well as reaction yield evaluation, it is concluded that: temperature of 80 ºC, sodium hydroxide
concentration of 2N, reaction time of 4 hours, and S/L ratio of 1/18 were the optimized condition to convert
the used natural clinoptilolite to zeolite A with highest phase purity and higher production yield.