Citation: Rong Gang DING, Ling QIAN, Lin Hua SONG, Zi Feng YAN, Huai Ping WANG. A Novel Method of the Modification of Ultrastable Y Zeolites With Citric Acid in Unbuffered System[J]. Chinese Chemical Letters, ;1997, 8(10): 931-934. shu

A Novel Method of the Modification of Ultrastable Y Zeolites With Citric Acid in Unbuffered System

a Department of Chemical Engineering, University of Petroleum, Dongying 257062;
b Instrumental and Analytical Center, University of Petroleum, Dongying 257062

Received Date: 20 May 1997

Fund Project: This work was financially supported by Natural Science Foundation of Shandong Province.

The feasibility of preparing high Si/Al ratio samples by treating USY zeolites with citric acid solution in unbuffered system was extensively investigated.The effect of treating conditions was explored.The results show that Si/Al ratios,crystallinities,contents of crystalline silicon and thermal stabilities of the samples are greatly increased after moderate modification.It means that it might be an effective method for the moderate modification of USY samples.
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