Studies on some novel silica molecular sieves
نویسندگان
چکیده
منابع مشابه
Catalysis by framework zinc in silica-based molecular sieves
Microporous and mesoporous zincosilicates (e.g., CIT-6, VPI-8, Zn-MFI, and Zn-MCM-41) synthesized in the presence of alkali cations contain two broad types of Zn sites: one that is a dication analog of the monocation ion-exchangeable Al-site in aluminosilicates, while the other resembles isolated Zn sites on amorphous silica. The ratio of these sites varies, depending on the synthesis condition...
متن کاملMolecular docking studies on xanthohumol derivatives as novel anticancer agents
A set of Xanthohumol derivatives were selected and molecular docking studies of these compounds on thioredoxin reductase were conducted. Based on new structural patterns using in silico-screening study, new potent lead compounds were designed. The results due to validated docking protocols lead to find that Thr58, Gly57, Gly21, Asp334, Glu163, Ala130, IIe332, Val44 and Gly132 are the main a...
متن کاملFurther Studies on Aluminophosphate Molecular Sieves Part 1 . - AIPO , - HS : A Hydrated Aluminophosphate Molecular Sieve
Pure, highly crystalline AIPO,-H2 is synthesized from an aluminophosphate gel containing dipentylamine and characterized using X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, thermogravimetry and solid-state nuclear magnetic reson!nce spectroscopy. The AIPO,-H2 structure has orthorhombic symmetry with cell parameters of a = 16.184(5) A, b = 9.914(3) A a...
متن کاملFurther Studies on Aluminophosphate Molecular Sieves Part 2.-VPI-5 and Related Aluminophosphate Materials
VPI-5 and AIPO,-H2 are constructed from t h e same type of chain building uni t which contains octahedral Al atoms (coordinated with four framework oxygens and two water molecules). The bonded water molecules are believed to stabilize the cha in building unit and play an important role in the crystallization of these materials. This chain building unit limits the possibilities of incorporating ...
متن کاملEnantiomerically enriched, polycrystalline molecular sieves.
Zeolite and zeolite-like molecular sieves are being used in a large number of applications such as adsorption and catalysis. Achievement of the long-standing goal of creating a chiral, polycrystalline molecular sieve with bulk enantioenrichment would enable these materials to perform enantioselective functions. Here, we report the synthesis of enantiomerically enriched samples of a molecular si...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the National Science Foundation of Sri Lanka
سال: 1988
ISSN: 2362-0161,1391-4588
DOI: 10.4038/jnsfsr.v16i2.8248