摘要:
Mesoporous crystalline alumina compositions and process for the preparation thereof are described. The compositions are useful as catalysts and absorbents.
摘要:
Mesoporous crystalline alumina compositions and process for the preparation thereof are described. The compositions are useful as catalysts and absorbents.
摘要:
Zeolites with uniform intracrystal textural pores between 1 and 10 nm are described. Intracrystal pores, an alumina source and a silica source are reacted in the presence of a silane modified polymer as a porogen and the reaction product is calcined to form the zeolite. The zeolites are useful in catalytic reactions and adsorption processes.
摘要:
Surfactant-templated mesoporous silicates and mesoporous layered silicate clays having certain porosity parameters are used as reinforcing agents for polymers to make composites. The combination of porosity parameters that allows mesoporous silicates to be competitive with organoclays for the reinforcement of engineering polymers include an average mesopore size of at least 4 nm for surfactant-templated mesoporous silicates and least 2 nm for mesoporous layered silicate clays.
摘要:
Nanolayered layered silicate materials of octahedrally arranged units with divalent metal ions at centers of the units covalently linked above and below to tetrahedrally arranged oxygen and hydroxyl units with silicon atoms. The silicate materials contain silanol groups which are reactive to form derivative compositions useful for water purification to remove heavy meal cations.
摘要:
A method for the separation and assay of phosphorylated peptides or proteins from complex mixtures of proteins and peptides is described. The method uses a diazo moiety linked by an organic group to a substrate. Kits for performing the assay are also described. The method and kits are particularly useful for detecting changes in phosphorylates produced in living cells.
摘要:
Mesostructured and microporous to mesoporous organofunctionalized silica compositions are described. The compositions incorporate the organofunctional group L as part of a LSiO3 unit in the framework of the compositions. In addition the compositions incorporate the organofunctional group R as part of a O3Si—R—siO3 unit in the framework of the compositions. The compositions are useful as molecular sieves, supports for catalysts and numerous other applications requiring an organo group on surfaces of a silica.
摘要翻译:描述介孔结构和微孔至介孔有机官能化二氧化硅组合物。 组合物在组合物的框架中掺入有机官能团L作为LSiO 3 N 3单元的一部分。 此外,组合物在组合物的框架中加入作为O 3 Si-R-SiO 3 N 3单元的一部分的有机官能团R。 该组合物可用作分子筛,用于催化剂的载体和需要二氧化硅表面上的有机基团的许多其它应用。
摘要:
Mesoporous hexagonal, cubic or wormhole aluminosilicates derived from zeolite seeds using an ionic structure directing agent are described. The aluminum in the structures is stable so that the framework of the structures does not collapse when heated in the presence of water or water vapor (steam) The steam stable aluminosilicates can be used as acid catalysts for hydrocarbon conversions, including the fluidized bed catalytic cracking and the hydrocracking of petroleum oils, and other cracking of organic compounds.
摘要:
Homostructured, cation exchanged, layered compositions containing mixed onium and protonated hydronium ions and mixtures thereof are described. Particulate concentrates formed by intercalation of a polymer component into the galleries of the layered inorganic and organic homostructured layered cation exchange composition and to the use of the particulate concentrates for the preparation of cured polymer-inorganic nanolayer hybrid composite compositions are described. In the most preferred embodiment of the invention the layered inorganic composition is selected from the family of 2:1 layered silicate clays.
摘要:
The present invention relates to particulate concentrate compositions formed by intercalation of a polymer polymerizing component into the galleries of a layered inorganic cation exchange composition initially in proton exchanged form and to the use of the particulate concentrates for the preparation of cured polymer-inorganic nanolayer hybrid composite compositions. The polymer polymerizing component comprising the particulate concentrate contains a basic group for reaction with the protons of the inorganic cation exchanger. Also, the polymer polymerizing component contains a functional group for polymerization reaction with a polymer precursor, a mixture of polymer precursors, or a polymer melt which is introduced into the galleries of the inorganic cation exchanger and reacts with the polymer polymerizing component to form a cured polymer-inorganic nanolayer hybrid composite. In the most preferred embodiment of the invention the layered inorganic composition is selected from the family of 2:1 layered silicate cation exchangers.