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本文是用氨水合成的 Z SM-5沸石经磷-镁、磷-(?)改性后,用于甲苯歧化和甲苯甲醇烷基化制取对二甲苯的研究结果,特别是甲苯歧化综合性能(活性、选择性、稳定性)指标达到了近几年来国内外文献发表的最好结果。1 催化剂的制备及评价方法将沸石原粉和载体(一水a-氧化铝)按一定比例
In this paper, ZSM-5 zeolite synthesized by ammonia is modified by phosphorous-magnesium and phosphorus- (?) And used for the study of toluene disproportionation and toluene methanol alkylation to produce p-xylene, especially the comprehensive performance of toluene disproportionation (Activity, selectivity, stability) indicators reached the best results published in domestic and foreign literature in recent years. A catalyst preparation and evaluation method The zeolite powder and carrier (a water a-alumina) according to a certain percentage