Results 211 to 220 of about 19,295 (264)
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Molecular sieve effects in chromatography
Analytica Chimica Acta, 1967Abstract The utilization of molecular sieve effects is reviewed. Applications to biochemical separations and the determination of molecular weights are discussed, as well as the properties of the different gels and the theory underlying their use.
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Vacuum, 1962
Abstract The use of molecular sieve as aorption material in cryogenic pumping techniqyes has found a number of important applications in the production of high vacua for experimental purposes, and in the routine evacuation of electronic valves. The main feature of this method of pumping is its freedom from pumping fluids.
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Abstract The use of molecular sieve as aorption material in cryogenic pumping techniqyes has found a number of important applications in the production of high vacua for experimental purposes, and in the routine evacuation of electronic valves. The main feature of this method of pumping is its freedom from pumping fluids.
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Chromatographia, 1970
Porous carbon black may be produced by thermal degradation of polymer like polyvinylidene chlorid under conditions, given in the literature. If the degradation reaction is optimized and followed by some additional treatment a carbon black is produced that has the properties of a molecular sieve with an inert surface which is extremely non polar as ...
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Porous carbon black may be produced by thermal degradation of polymer like polyvinylidene chlorid under conditions, given in the literature. If the degradation reaction is optimized and followed by some additional treatment a carbon black is produced that has the properties of a molecular sieve with an inert surface which is extremely non polar as ...
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Transactions of the Indian Ceramic Society, 1977
A special class of porous hydrous aluminosilicates, some of which occur as minerals in nature and some others can be synthesized in the laboratory, has assumed great importance in the field of chemical technology during the last decade. These are known as molecular sieve zeolites.
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A special class of porous hydrous aluminosilicates, some of which occur as minerals in nature and some others can be synthesized in the laboratory, has assumed great importance in the field of chemical technology during the last decade. These are known as molecular sieve zeolites.
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Collection of Czechoslovak Chemical Communications, 2003
Nanosized molecular sieves or colloidal zeolites are crystalline porous solids with particle sizes in the range of 10-1000 nm; they are synthesized from colloidal precursor solutions under hydrothermal conditions at temperatures lower than 100 °C. The complex mechanism by which nanosized microporous materials are assembling from framework constituent ...
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Nanosized molecular sieves or colloidal zeolites are crystalline porous solids with particle sizes in the range of 10-1000 nm; they are synthesized from colloidal precursor solutions under hydrothermal conditions at temperatures lower than 100 °C. The complex mechanism by which nanosized microporous materials are assembling from framework constituent ...
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Chemie Ingenieur Technik, 2011
AbstractThe pore structures of adsorbents such as zeolites and metal‐organic frameworks comprise regular arrays of uniform channels of molecular dimensions, thus offering the possibility of size selective (molecular sieve) separations. Molecular sieve separations have traditionally been carried out in a cyclic batch adsorption/desorption process but ...
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AbstractThe pore structures of adsorbents such as zeolites and metal‐organic frameworks comprise regular arrays of uniform channels of molecular dimensions, thus offering the possibility of size selective (molecular sieve) separations. Molecular sieve separations have traditionally been carried out in a cyclic batch adsorption/desorption process but ...
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1986
Several novel silicoaluminophosphate (SAPO) molecular sieves representing a broad variety of crystal structures and pore sizes ranging from small to large were evaluated for catalytic activity in the reactions of propylene oligomerization and toluene methylation.
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Several novel silicoaluminophosphate (SAPO) molecular sieves representing a broad variety of crystal structures and pore sizes ranging from small to large were evaluated for catalytic activity in the reactions of propylene oligomerization and toluene methylation.
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Molecular Sieves: Aluminophosphates
2011Aluminophosphate molecular sieves exhibit structural and compositional diversity. Their frameworks can be modified by other elements, thus providing novel silicoaluminophosphate (SAPO), metaloaluminophosphate (MAPO), and metalosilicoaluminophosphate (MAPSO) materials. They possess the characteristics of both zeolites and aluminophosphates, all of which
Rajić, Nevenka +2 more
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