Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Patent
1985-03-18
1987-04-14
Doll, John
Chemistry of inorganic compounds
Silicon or compound thereof
Oxygen containing
423326, 423328, 423330, 423331, 423332, 423333, 502 60, 502 62, 502 71, 502 77, C01B 3328
Patent
active
046577505
ABSTRACT:
Crystalline silicates and processes for the production thereof are described. These crystalline silicates are of new crystalline structure, which, as determined after calcination in the air at 550.degree. C., have a composition represented by the general formula (I): pM.sub.2
O.Al.sub.2 O.sub.3.qSiO.sub.2 (the symbols are as defined in the appended claims) and give a X-ray diffraction pattern as shown in Table 2. They are superior in heat resistance and acid resistance, and can be used as catalysts for the conversion of various organic compounds, absorbents, or as catalysts for various reactions. They are produced by reacting an aqueous mixture comprising (a) a silica source, (b) an alumina source, (c) an alkali metal and/or alkaline earth metal source, and (d) ethylene glycol or (e) monoethanolamine at a temperature of 100.degree. to 300.degree. C. till the desired crystalline silicates are formed. Although ethylene glycol and monoethanolamine do not remain in the crystalline silicates, they play important roles in the formation of the desired crystalline structure in the course of the production thereof.
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Kawata Noboru
Takatsu Kozo
Doll John
Leeds Jackson
Research Association for Petroleum Alternatives Development
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