Process for making theta-1 zeolite
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United States of America
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Aug 30, 1994
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N/A
app pub date -
Dec 29, 1981
filing date -
Dec 29, 1981
priority date (Note) -
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Abstract
Novel crystalline alumino silicates having the following composition in terms of the mole ratio of the oxides: 0.9.+-.0.2 M.sub.2 n :Al.sub.2 O.sub.3 :x SiO.sub.2 :yH.sub.2 O wherein M is at least one cation having a valence n, x is at least 10 and y/x is between 0 and 25, said aluminosilicates having a characteristic X-ray diffraction pattern. The cation M in the aluminosilicates is preferably selected from H.sup.+, ammonium, alkali metal cations, alkaline earth metal cations, organic nitrogencontaining cations, aluminum cations, gallium cations and mixtures thereof. The invention also comprises a process for producing the aluminosilicate by mixing together a source of silica, a source of alumina, a source of alkali metal(s), water and diethanolamine until a homogeneous gel is formed and crystallizing the mixture at a temperature above 70.degree. C. for a period of at least 2 hours.
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- C01B Class
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- 31 Age