Kinetics and Mechanism of Zeolite "m" Crystallization
عنوان مقاله: Kinetics and Mechanism of Zeolite "m" Crystallization
شناسه ملی مقاله: ZEOLITE01_144
منتشر شده در همایش بین المللی ژئولیت ایران در سال 1387
شناسه ملی مقاله: ZEOLITE01_144
منتشر شده در همایش بین المللی ژئولیت ایران در سال 1387
مشخصات نویسندگان مقاله:
Samira Aliyeva - Azerbaijan National Academy of Sciences, Chemistry Problems Institute, Baku, Azerbaijan
m.k Munshiyeva - Azerbaijan National Academy of Sciences, Chemistry Problems Institute, Baku, Azerbaijan
Amir Reza Vakhshouri - Azerbaijan National Academy of Sciences, Petro-chemistry processes Institute, Baku, Azerbaijan.
Dayandur Ganbarov - Azerbaijan National Academy of Sciences, Chemistry Problems Institute, Baku, Azerbaijan
خلاصه مقاله:
Samira Aliyeva - Azerbaijan National Academy of Sciences, Chemistry Problems Institute, Baku, Azerbaijan
m.k Munshiyeva - Azerbaijan National Academy of Sciences, Chemistry Problems Institute, Baku, Azerbaijan
Amir Reza Vakhshouri - Azerbaijan National Academy of Sciences, Petro-chemistry processes Institute, Baku, Azerbaijan.
Dayandur Ganbarov - Azerbaijan National Academy of Sciences, Chemistry Problems Institute, Baku, Azerbaijan
The numerous structurally possible hypothetic zeolite frameworks were suggested recently. One of the
forecasting structurally-possible and practically realized zeolite is the zeolite "m". This zeolite was realized
by hydrothermal crystallization in Na2O-Al2O3-SiO2-H2O system at 150ºC in the NaOH solution of various
concentrations from the mixture of meta-kaolin and obsidian. Initial reaction masses have the following
compositions:
Na2O/Al2O3 = 5.5-6.5; SiO2/ Al2O3 = 21-27; H2O/Al2O3 = 60-120.
Its hypothetic structure with cubic symmetry and parameters of elementary cell a = 19.5±0.5Å has the
chemical formula : Na16Al16Si112O256·64H2O.
Phase and chemical composition of crystallization products have been determined by the methods of Xray
phase (DRON-2.5; CuKα-radiation; Ni-filter), thermo graphic (Derivatograph Q-1500D) and X-ray
spectral (SRM-18).The kinetics of zeolite "m" crystallization has been studied and crystallization mechanism
is given.
کلمات کلیدی: Zeolite m, meta-kaolin, hydrothermal crystallization
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/66194/