نتایج جستجو برای: ray analysis
تعداد نتایج: 3061922 فیلتر نتایج به سال:
Journal:
:The Journal of the Society of Chemical Industry, Japan
1964
Journal:
:Journal of Synthetic Organic Chemistry, Japan
1971
Journal:
:Chemical and Pharmaceutical Bulletin
1969
Journal:
:journal of the iranian chemical research
0
sedigheh vaezifar
department of chemistry, university of isfahan, isfahan 81746-73441, iran
fadak chemical company, isfahan science and technology town (istt), isfahan, iran hossein faghihian
department of chemistry, university of isfahan, isfahan 81746-73441, iran mehdi kamali
central laboratory, faculty of modern sciences & technologies, university of isfahan, isfahan 81746-73441, iran
in this research different types of al2o3 were used as supports to prepare catalysts for dehydrogenation of isobutane to isobutene. these supports were al2o3 from merck, axen and gamma al2o3 synthesized from al(oh)3. sn/pt/al2o3 catalysts were prepared by sequential impregnation, at first pt and then sn was deposited. characterization of catalysts was performed by x-ray powder diffraction (xrd)...
پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم پایه
1388
چکیده ندارد.
پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند
1386
چکیده ندارد.
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