The present invention relates to a new process for synthesising a crystalline material comprising structure Beta zeolite in nanocrystalline form, and which can comprise at least the following steps: (i) preparing a mixture comprising at least one source of water, at least one source of a tetravalent element Y, at least one source of a trivalent element X, at least one source of an alkali cation or alkaline earth metal cation (A), and at least one organic molecule selected from a monocyclic quaternary ammonium R1R2CycloN+, and a quaternary ammonium substituted with a cycloalkyl group R3R4R5R6N+. The molar composition of the mixture is: n X2O3 : YO2 : a A : m OSDA1 : z H2O; ii) crystallising the mixture; and iii) recovering the crystalline material.
本发明涉及一种新工艺,用于合成纳米结晶形式的由 Beta
沸石结构组成的结晶材 料,该工艺至少包括以下步骤:(i) 制备一种混合物,该混合物包括至少一种
水源、至少一种四价元素 Y 源、至少一种三价元素 X 源、至少一种碱阳离子或碱土
金属阳离子 (A) 源,以及至少一种选自单环季
铵 R1R2CycloN+ 和被环烷基取代的季
铵 R3R4R5R6N+ 的有机分子。混合物的摩尔组成为:n X2O3 : YO2 : a A : m O
SDA1 : z
H2O;ii) 结晶混合物;iii) 回收结晶物质。