Catalytic Behaviour of Synthetic SMM and Pillared SMM in the Animation of Ethanol

Abstract

Abstract: Synthetic mica-montmoriilonite (SMM) was synthesized by using the hydrothertnal method. Pillared synthetic dioctahedral clays(Al-CLS) were prepared by crosslinking SMMwith hydroxyl aluminium oligomer between the layers. The results obtained by DTA and IRindicate that the dehydroxylation of octahedral hydroxyl group is easier at a high temperature calcination because of pillar introduced. The surface acidity of SMM and Al-CLSmeasured by NH₃-TPDand pyridine adsorption showed that Al-CLSpresents even more sites of weaker and stronger acid than SMM. The dehydration-amination of ethanol with ammonia was studied over SMM and Al-CLSat 400℃ under ambient pressure. It is found that the weak acid sites on the surface favour the dehydration of ethanol and the NH₃molecular adsorpted on the strong acid sites favour the amination of ethanol. The results from NH₃-TPD, C₂H₅OH-TPD and estimation test showed that the reaction between NH₃adsorpted on the strong acid sites and gas state C₂H₅OH perhaps occur in the amination of ethanol.

Key words: Synthetic mica-montmonllonite, Crosslinking, Animation of ethanol

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Ren Bei-yuan, Liu Zi-yang, Jiang Da-zhen, Min En-ze, He Ming-yuan. Catalytic Behaviour of Synthetic SMM and Pillared SMM in the Animation of Ethanol[J]. Chem. J. Chinese Universities, 1991, 12(12): 1631.

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Catalytic Behaviour of Synthetic SMM and Pillared SMM in the Animation of Ethanol

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