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2 151 101

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Application

98114690/12, 1998-07-21

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Start date

1998-07-21

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Actual filing date

1998-07-21

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Published

2000-06-20

(72)

Inventor

Shakun A.N.Fedorova M.L.Skornikova S.A.Zelentsov Ju.N.Porublev M.A.Posokhova O.M.Chenets V.V.

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju Firma

METHOD OF PREPARING ZEOLITE BETA Russian patent published in 2000 - IPC

Abstract RU 2151101 C1

FIELD: synthesis of zeolites. SUBSTANCE: method comprises dissolving tetra- ethyl ammonium bromide in water, mixing the resulting solution with sources of silicon, aluminium, sodium oxides, water, aqueous emulsion of seed crystals of zeolite Beta at zeolite to water weight ratio of 0.08- 0.12. Synthesis of zeolite is carried out without ammonium hydroxide at pH of reaction mixture of 12.5-14, molar ratios in reaction mixture being as follows: SiO2/Al2O3 is 25-50; H2O/SiO2 is 14-20; TEA+/SiO2 is 0.29-0.40; Na2O/SiO2 is 0.08-0.12; OH-/SiO2 is 0.16-0.24. Method makes it possible to reduce zeolite crystallization time to 36-120 hours. EFFECT: more efficient preparation method. 2 cl, 10 ex, 1 tbl

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RU 2 151 101 C1

Authors

Shakun A.N.

Fedorova M.L.

Skornikova S.A.

Zelentsov Ju.N.

Porublev M.A.

Posokhova O.M.

Chenets V.V.

Dates

2000-06-20—Published

1998-07-21—Filed

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