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    • 32. 发明授权
    • Process for the production of crystalline silicate ISI-4 using ethylene
glycol
    • 使用乙二醇生产结晶硅酸盐ISI-4的方法
    • US4657750A
    • 1987-04-14
    • US713086
    • 1985-03-18
    • Kozo TakatsuNoboru Kawata
    • Kozo TakatsuNoboru Kawata
    • C01B39/04B01J29/00B01J29/70C01B39/48C07C1/20C01B33/28
    • B01J29/70C01B33/2869C01B39/48C07C1/20C07C2529/06Y02P30/42Y10S423/36
    • Crystalline silicates and processes for the production thereof are described. These crystalline silicates are of new crystalline structure, which, as determined after calcination in the air at 550.degree. C., have a composition represented by the general formula (I): pM.sub.2/n O.Al.sub.2 O.sub.3.qSiO.sub.2 (the symbols are as defined in the appended claims) and give a X-ray diffraction pattern as shown in Table 2. They are superior in heat resistance and acid resistance, and can be used as catalysts for the conversion of various organic compounds, absorbents, or as catalysts for various reactions. They are produced by reacting an aqueous mixture comprising (a) a silica source, (b) an alumina source, (c) an alkali metal and/or alkaline earth metal source, and (d) ethylene glycol or (e) monoethanolamine at a temperature of 100.degree. to 300.degree. C. till the desired crystalline silicates are formed. Although ethylene glycol and monoethanolamine do not remain in the crystalline silicates, they play important roles in the formation of the desired crystalline structure in the course of the production thereof.
    • 描述了结晶硅酸盐及其生产方法。 这些结晶硅酸盐具有新的结晶结构,其在550℃下在空气中煅烧后测定,具有由通式(I)表示的组成:pM2 / nO.Al2O3.qSiO2(符号如 所附权利要求书),得到如表2所示的X射线衍射图案。它们的耐热性和耐酸性优异,可用作各种有机化合物,吸收剂或用于各种反应的催化剂的转化催化剂 。 它们是通过使含有(a)二氧化硅源,(b)氧化铝源,(c)碱金属和/或碱土金属源,(d)乙二醇或(e)单乙醇胺的二氧化硅源, 温度在100℃至300℃直到形成所需的结晶硅酸盐。 尽管乙二醇和单乙醇胺不残留在结晶硅酸盐中,但是在制备期望的晶体结构的形成中起重要作用。