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    • 5. 发明申请
    • PROCESS FOR DIRECT SYNTHESIS OF MORDENITES
    • 直接合成MORDENITES的方法
    • WO1991014652A1
    • 1991-10-03
    • PCT/AT1991000048
    • 1991-03-28
    • VEITSCHER MAGNESITWERKE-ACTIEN-GESELLSCHAFTMEIER, AndreasLUKAS, WalterWILHELMY, MarcusHANTSCHEL, Peter
    • VEITSCHER MAGNESITWERKE-ACTIEN-GESELLSCHAFT
    • C01B33/34
    • C01B39/02C01B33/2861
    • In a process for direct synthesis of mordenites with a molar SiO2/Al2O3 ratio greater than 12, an aqueous synthesis mixture containing an a Na2O . b Al2O3 . c SiO2 system, the SiO2 : Al2O3 ratio in the synthesis mixture being greater than 10, the Na2O : SiO2 ratio being less than 0.2 and the H2O : SiO2 ratio being less than 25, is treated hydrothermally at temperatures greater than 150 DEG C, and the mordenite formed is then separated from the mother liquor. The silicic acid constituent of the synthesis mixture is the portion of the residue which remains after hydrochloric acid digestion of magnesium silicate, in particular serpentine, and which is soluble in this caustic solution. Preferably, the constituents of the synthesis mixture are provided in the following ratios: SiO2 : Al2O3 = 10 - 30; Na2O : SiO2 = 0.1 - 0.2; H2O : SiO2 = 5 - 20. The duration of the hydrothermal treatment is 6 to 12 hours, in particular 8 to 10 hours, and preferably temperatures of 180 to 200 DEG C are applied.
    • 在直接合成SiO 2 / Al 2 O 3摩尔比大于12的丝光沸石的方法中,含有Na 2 O的含水合成混合物。 b Al2O3。 c SiO 2体系,合成混合物中SiO 2:Al 2 O 3的比例大于10,Na 2 O:SiO 2比小于0.2,H 2 O:SiO 2的比例小于25,在大于150℃的温度下进行水热处理, 然后将形成的丝光沸石与母液分离。 合成混合物的硅酸组分是在硅酸镁盐酸盐消解之后残留的部分残留物,特别是蛇纹石,并且可溶于该苛性碱溶液。 优选地,合成混合物的组分以下列比例提供:SiO 2 :Al 2 O 3 = 10-30; Na2O:SiO2 = 0.1〜0.2; H 2 O:SiO 2 = 5-20。水热处理的持续时间为6〜12小时,特别是8〜10小时,优选为180〜200℃的温度。