Acidity of Y zeolites modified by different catalysts - Application to dry reforming reaction of methane

作者：Halliche D^*; Cherifi O; Auroux A

来源：Journal of Thermal Analysis and Calorimetry, 2002, 68(3): 997-1002.

DOI：10.1023/A:1016107026089

• acidity
• calorimetry
• ion-exchanged Y zeolites
• methane reforming

A series of modified zeolite catalysts ( HYM) was prepared by ion-exchange of a commercial faujasite Y by various cations (M=Ni, Cr, Fe, Li, Ce). The exchange level was calculated from the chemical analysis results. The acidity of the samples was determined by ammonia adsorption calorimetry which allowed the simultaneous determination of the number and strength of the acid sites. The order of acidity obtained was the following: HYCr>HY>HYNi>HYLi>HYFe>HYCe.
These catalysts were tested in the dry reforming reaction of methane by carbon dioxide in the 400-700degreesC domain, under atmospheric pressure. The best catalytic performances were observed with the HYNi sample which displayed methane and dioxide conversions of 74,1 and 78,5% respectively.

• 出版日期2002