Synthesis of ZSM-48 crystals heterostructure WITH SEEDS OF NON-of ZSM-48

摘要

1. Crystals of ZSM-48 with a pure phase, high activity, having a ratio of XO / YOmenee than about 150/1, and substantially not containing impurities ZSM-50 and Kenyaite having a diameter of less than about 1 micrometer and substantially no having fibrous morfologii.2. Crystals of ZSM-48 with a pure phase, high activity according to claim 1 having a ratio of XO / YOprimerno from 40/1 to 150 / 1.3. Crystals of ZSM-48 with a pure phase, high activity according to claim 1, wherein X represents at least one element of Si and Ge, a Y represents at least one element of Al, Ga, In, Fe, Ti, Va and Fr.4. Crystals of ZSM-48 with a pure phase, high activity according to claim 1, wherein X is Si, a Y represents Al.5. A method for producing crystals of ZSM-48 which comprises mixing effective amounts of heterostructural zeolite seeds, selected from the group consisting of ZSM-5, ZSM-11, ZSM-12, colloidal BEA, Beta, X and Y zeolites, at least one source of tetravalent element X, at least one source of a trivalent element Y, an alkali or alkaline earth metal M and at least one organic template material R, to obtain a reaction mixture having the following composition in mole ratios of oxides: XO / YO: 20 / 1-2500 / 1 OH / XO: 0 / 1-2,0 / 1 HO / XO: 1 / 1-500 / 1, M / XO: 0 / 1-2,0 / 1, R / XO: 0,001 / 1-5,0 / 1, and maintaining said reaction mixture under effective crystallization conditions for a time sufficient to form crystal ZSM-48.6. A method according to claim 5, wherein the organic template is selected from organic linear diquaternary alkylammonium compounds and linear diaminoalkanov.7. A method according to claim 6, wherein the effective amount of non ZSM-48 seeds is in the range from about 0.01 to about 5 m