| 摘要 |
A synthetic zeolite material, designated zeolite FU9, having a molar composition expressed by the formula 0.5 to 1.5 R2O : Y2O3: 15 to 30 XO2 : O to 500 H2O in which R is a monovalent cation or 1/n of a cation of valency n, X is silicon and/or germanium, Y is one or more of aluminium, iron, chromium, vanadium, molybdenum, arsenic, manganese, gallium or boron, and H2O is water of hydration additional to water notionally present when R is H, and having an X-ray diffraction pattern, the most significant lines of which are <IMAGE> zeolite FU9 being a useful catalyst for xylenes isomerisation and the like. The zeolite is prepared starting from an aqueous reaction mixture containing at least one tetramethyl ammonium compound (TMA). Molar composition: XO2/Y2O3 = 5-50 free MO2/XO2 = 0.1-10 Z<->/Y2O3 = 0-5000 Q/Y2O3 = 01-150 H2O/XO2 = 5-200, in which X and Y have the above-mentioned meanings, M is an alkali metal or ammonium, Z<-> is a strong acid radical and Q = (TMA)2 + xA in which A is a trialkyl amine or alkanol amine or salt thereof and x is 0,2 to 2,0 moles. |
