PURPOSE:To obtain a crystalline aluminosilicate zeolite having high silica content can be prepared, easily, by reacting an aqueous mixture containing a silica source having specific BET specific area and H2O/SiO2 ratio, an alumina source, and an alkali source. CONSTITUTION:A suspendible hydrated silica having a BET specific area of =80m2/g and a weight ratio of water to silica (H2O/SiO2) of =3 is prepared beforehand and used as a silica source. The silica source is mixed with an alumina source and an alkali source preferably at molar ratios (SiO2/Al2O3) of about 25-20, (OH-/SiO2) of about 0.10-0.40, and (H2O/SiO2) of about 4-100. The aqueous reaction mixture is sealed in an autoclave, made to react, and crystallized until a crystalline aluminosilicate zeolite such as ZSM-5 zeolite, etc. is formed.
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机译：用途：为了获得具有高二氧化硅含量的结晶铝硅酸盐沸石，可以通过使包含具有特定BET比表面积和H2O / SiO2比的二氧化硅源，氧化铝源和碱源的含水混合物反应而轻松制备。组成：BET比表面积≥80m2 / g且水与二氧化硅的重量比（H 2 O / SiO 2）≤3的悬浮水合二氧化硅被用作二氧化硅源。二氧化硅源与氧化铝源和碱源优选以约25-20的摩尔比（SiO 2 / Al 2 O 3），约0.10-0.40的（OH-/ SiO 2）和（H 2 O / SiO 2）的摩尔比混合。 4-100。将含水反应混合物密封在高压釜中，使其反应并结晶，直到形成结晶铝硅酸盐沸石如ZSM-5沸石等。
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