TPD STUDY OF ADSORPTION AND DESORPTION OF C6H11NH2 ON ZEOLITES

Chinese Journal of Applied Chemistry ›› 1992, Vol. 0 ›› Issue (5): 6-10.

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TPD STUDY OF ADSORPTION AND DESORPTION OF C₆H₁₁NH₂ ON ZEOLITES

Duan Xue, Sun Peng, Zhu Yaling, Wang Zuoxin

Departmentr of Applied Chemistry, Beijing Institute of Chemical Technology, Beijing 100029

Received:1991-08-27 Revised:1992-04-03 Published:1992-10-10 Online:1992-10-10

Abstract

Abstract: The adsorption and desorption of cyclohexylamine, as a cross linking agent, on different zeolites were studied by temperature programmed desorption (TPD) technique. It is shown that cyclohexylamine can be strongly adsorbed on the surface of zeolites and the adsorpbilities are dependent on the acid charater of the zeolite's surface. The effective sites of the adsorption are the sites of weak ehemical adsorption. The desorption of cyclohexylamine on the surface of zeolites is related to its diffusion in the crystal of zeolites. The apparent activation energy of the desorption is 63.6, 68.6, 20.1, 46.9 and 47.3 kJ/mol for zeolites 5A, 13X, natural zeolite, NaY, and ZSM-5 respecxively.

Key words: Zeolite, cyclohexylamine, TPD

Duan Xue, Sun Peng, Zhu Yaling, Wang Zuoxin. TPD STUDY OF ADSORPTION AND DESORPTION OF C₆H₁₁NH₂ ON ZEOLITES[J]. Chinese Journal of Applied Chemistry, 1992, 0(5): 6-10.

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TPD STUDY OF ADSORPTION AND DESORPTION OF C₆H₁₁NH₂ ON ZEOLITES

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