Aluminophosphate molecular sieves comprised of hydrated triple crankshaft chains
نویسندگان
چکیده
منابع مشابه
Further 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 کاملIonothermal synthesis of aluminophosphate molecular sieves
Effects of ionic liquid structures on the aluminophosphate molecular sieve products in ionothermal synthesis process were investigated. The results showed that the possible structure-directing effect of ionic liquid might exist during ionothermal synthesis. Microwave heating was introduced into the ionothermal synthesis, which led to a fast and safe process for preparation of molecular sieves. ...
متن کاملProgress in heteroatom - containing aluminophosphate molecular sieves
Over the past 30 years, heteroatom-containing aluminophosphate molecular sieves as a prime class of heterogeneous single-site solid catalysts have been quickly developed since the first discovery of aluminophosphate molecular sieves in 1982, and a large variety of such materials with 48 unique zeotype structures have been prepared. This work mainly presents the progress in the development of he...
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 کاملThe first synthesis of organosilyl-substituted aluminophosphate molecular sieves.
Organosilyl groups were successfully incorporated in AFI and VFI aluminophosphate frameworks using organoalkoxysilanes to modify hydrophobicity and acidity of the molecular sieves.
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ژورنال
عنوان ژورنال: Journal of the Chemical Society, Chemical Communications
سال: 1993
ISSN: 0022-4936
DOI: 10.1039/c39930000403