performance of dealuminated ni/zsm-5 catalyst in dry reforming of methane

ni/zsm-5 modified nano catalyst containing 3, 5 and 7wt. % ni were prepared by impregnation method for drm. dealumination of zsm-5 carried out by hno3 solution as a dealumination agent. this process led to increase si/al ratio for zsm-5. for approaching to the higher conversion and h2/co ratio, higher concentration of acid and lower temperature for treatment of zsm-5 must be used. the sample that was prepared by higher concentration of acid and lower temperature in dealumination process, with 5%wt ni showed a better activity and stability than unmodified sample during drm at 700°c for 30h time on stream.