专利名称：Alumina removal from crystalline alumino-silicates with Cr(III) solutions
发明人：William E. Garwood,Nai Yeun Chen,Stanley J.
Lucki
申请号：US05/389109申请日：19730817公开号：US03937791A公开日：19760210
摘要：A method of removing alumina from a crystalline aluminosilicate compositionhaving a silica/alumina mole ratio of from above 3 to about 12 which comprises heatingsaid aluminosilicate composition to a temperature of greater than 50°C. to about 100°C.in the presence of a cationic form of chromium, preferably Cr.sup.+.sup. 3, in aqueoussolution of above 0.01 Normal of a chromium salt of a mineral acid whereby the pH is lessthan 3.5, and such that the atomic ratio of chromium to aluminum is greater than 0.5 for atime sufficient to remove the alumina. The method of this invention permits thealuminosilicate composition to retain substantial crystallinity. Organic compoundconversion with the dealuminized material formed by the method of this invention maybe advantageously utilized.
申请人：MOBIL OIL CORPORATION
代理人：Charles A. Huggett,Raymond W. Barclay,Dennis P. Santini
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