Crystalline aluminosilicates having a high silica to alumina molar ratio are prepared by mixing a source of silica, a source of alumina, a source of alkali metal, water and one or more substituted neopentylamines having the formula: ##STR1## wherein R.sup.2 is H, OH or NH.sub.2 and R.sup.1 is a C.sub.1 to C.sub.6 alkyl group, and maintaining the mixture under conditions of elevated temperature and pressure, typically in the range from 80.degree. to 210.degree. C. and autogenous pressure for a time sufficient to effect formation of the aluminosilicate, typically not less than 4 hours. The molar ratio of silica to alumina in the initial mixture is suitably in the range from 10:1 to 150:1 and the amounts of alkali metal and neopentylamine are suitably in the range from 2:1 to 0.02:1 and 10:1 to 0.02:1 respectively moles per mole equivalent of total silica and alumina in the respective sources. Depending on the ratio of silica to alumina in the initial mixture crystalline aluminosilicates having a mordenite structure or a ZSM-5 type zeolite structure or mixtures thereof may be prepared. Mordenites having a silica to alumina ratio greater than 10:1 can be prepared.
The present invention discloses a new family of crystalline, microporous silaceous materials of regular geometry which are substantially hydrophobic, and methods for their preparation. These compounds may be prepared from natural or synthetic hydrated aluminous tectosilicates.
This invention relates to a new form of crystalline mordenite-type material, to a new and useful method for synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.
This invention relates to a new form of crystalline material identified as mordenite-type, to a new and useful method for synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.
This invention relates to a new form of crystalline material identified as mordenite-type, to a new and useful method for synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.
This invention relates to a new form of crystalline material identified as mordenite-type, to a new and useful method for synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.
