Method for preparing NaY molecular sieve with high aluminum-silicon ratio

The invention relates to a method for preparing a NaY molecular sieve with a high aluminum-silicon ratio, which comprises the following steps of: mixing a silicon source, an aluminum source and deionized water, uniformly mixing two guide agents in different molar ratios, water glass, acidic aluminum...

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Main Authors WANG GUOFENG, GAO XIONGHOU, SHEN WEN, LUO JIESHENG, ZHAO HONGJUAN, QIN SONG, ZHANG JIHUA, SHEN WEI, WANG BAOJIE, LIU CONGHUA, ZHANG JUNYI, CHEN YUANYING, ZHANG ZHONGDONG, LI QIANG, SHEN BAOJIAN, ZHU MINGYE
Format Patent
LanguageChinese
English
Published 28.09.2011
Subjects
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Summary:The invention relates to a method for preparing a NaY molecular sieve with a high aluminum-silicon ratio, which comprises the following steps of: mixing a silicon source, an aluminum source and deionized water, uniformly mixing two guide agents in different molar ratios, water glass, acidic aluminum salt and sodium aluminate solution in a molar ratio of gel materials to prepare two gels, and crystallizing respectively, wherein the molar ratio of the gel materials is (1.0-6.5)Na2O:Al2O3:(5.0-18)SiO2:(100-280)H2O, and Al2O3 in the guide agents accounts for 0.01 to 15 percent of the total weightof Al2O3; uniformly mixing the two gels in a mass ratio of 1:(0.1-10) to prepare a mixed gel; and crystallizing the prepared mixed gel at the temperature of between 80 and 120 DEG C for 2 to 50 hoursto prepare the NaY molecular sieve. Compared with the prior art, the method has the advantages that: the NaY molecular sieve with the high aluminum-silicon ratio can be prepared in shorter time underthe condition of the same f
Bibliography:Application Number: CN20101134759