摘要:
A method for preparing a metalloaluminosilicate, includes the steps of: providing a solution containing a silica source; providing a solution containing an alumina source; providing an aqueous acid solution containing a metal other than silicon or aluminum; mixing the silica source solution with the aqueous acid solution so as to form a silica source-metal containing mixture; mixing the silica source-metal containing mixture with the alumina source solution so as to provide a gel mixture; and hydrothermally crystallizing the gel mixture so as to provide a metalloaluminosilicate material having an aluminosilicate framework and having the metal incorporated into the aluminosilicate framework. A method for preparing aluminosilicate, and specific compositions, are also provided.
摘要:
Electrode active materials comprising lithium or other alkali metals, a transition metal, and a phosphate or similar moiety, of the formula: AanullxMbP1-xSixO4 wherein (a) A is selected from the group consisting of Li, Na, K, and mixtures thereof, and 0
摘要:
Selected smectites may be synthesized from a wide variety of components. Morphology, purity, size, and/or shape of the selected smectite may be controlled by mixing the clay smectite formatives, and selectively controlling the pH during mixing. The selected smectites may be used in any applications in which naturally occurring smectite may be used. The selected smectite may also be formulated into an organoclay.
摘要:
An open-celled, inorganic foam based on an aluminosilicate and having a density of less than 25 g/l can be prepared by reacting and foaming an alkali metal silicate solution with an alkali metal aluminate solution in the presence of a volatile blowing agent and an emulsifier.
摘要:
Electrode active materials, preferably having an olivine structure, of the formula: AaMbXY4 wherein (a) A is one or more alkali metals, preferably Li, and 0
摘要:
Electrode active materials, preferably having an olivine structure, of the formula: AaMbXY4 wherein (a) A is one or more alkali metals, preferably Li, and 0 2; (b) M comprises (i) at least one metal capable of undergoing oxidation (ii) at least one null3 oxidation state non-transition metal, and 0
摘要:
A lithium ion secondary cell having a high capacity, improved first charge/discharge efficiency and improved cycle performance is obtainable using as the negative electrode material a lithium-containing silicon oxide powder having the formula: SiLixOy wherein x and y are 0
摘要:
The present invention relates to a process for easily and efficiently producing silica particles having a narrow particle size distribution and a high porosity from inexpensive starting materials such as sodium silicate. The silica particles of the present invention can be obtained in the form of a slurry containing them by (1) forming a slurry by mixing first particles difficultly soluble in an alkali and soluble in an acid, with an aqueous alkali silicate solution to form a first slurry containing the first particles, (2) neutralizing the first slurry with a mineral acid to prepare a second slurry containing second particles wherein silica is deposited on the first particles, and (3) adding a mineral acid to the second slurry to dissolve the first particles from the second particles, to prepare a third slurry containing silica particles. When the silica particles of the present invention are used as a filler even in a small amount for paper making, the resultant papers have excellent brightness, opacity, opacity-after-printing, etc.
摘要:
A process for the preparation of mesostructured molecular sieve silicas from inorganic silicon precursors and polyoxyethylene oxide based polymers is described. The silicas are stable upon calcination to 600null to 800null C. The silicas are useful in refining processes.