Chem. J. Chinese Universities ›› 1992, Vol. 13 ›› Issue (10): 1274.
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TAO Ke-Yi, GAO Feng, WEN Lang-You, CHEN Zhong-Ming, ZANG Ya-Ru, LI He-Xuan
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Abstract: The acid-base properties of a series of (K,Na)ZSM-5 zeolites with various contents Kwere investigated by IR,TPD,Hammett-Indicator non-aqueous titration and measurement of catalytic properties.The KOHexchanged ZSM-5 zeolites have moderate Lewis acid sites(cation,Na+,K+) and two different kinds of base sites,the weak ones (AlO4-or framework oxygen ions) and the strong ones(OH-).The acidity decreases while the basicity increases with increasing the concentrations of exchanging KOHsolutions.The samples exhibit higher catalytic activities for the dehydrogenation and dehydration of isopropanol.The catalytic properties correlate well with the acid-base properties.
Key words: (K,Na)ZSM-5 zeolite, Acid-base properties, Catalytic activities
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TAO Ke-Yi, GAO Feng, WEN Lang-You, CHEN Zhong-Ming, ZANG Ya-Ru, LI He-Xuan . Acid-Base and Catalytic Properties of (K,Na)ZSM-5 Zeolites[J]. Chem. J. Chinese Universities, 1992, 13(10): 1274.
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http://www.cjcu.jlu.edu.cn/EN/Y1992/V13/I10/1274
