Advances in the noble metal-zeolite catalysts for aromatic conversion

doi:10.16085/j.issn.1000-6613.2017.05.020

Abstract

Abstract: In this paper,recent advances on the aromatic conversion over metal-zeolite bifunctional catalysts have been reviewed. The synergistic behavior between metal and acid sites was discussed. Meanwhile,the dependences of catalytic performance on metal nature,properties of zeolites and pretreatment procedure were reviewed. By reviewing the reaction characteristics of the aromatic conversion over bifunctional catalyst,we pointed out that the introduction of metallic component into zeolites is an effective way to regulate the product distribution,improve the activity and stability of catalyst. Moreover,balancing between the metallic sites and acidic sites is the key to further optimize the catalytic performance,so as to inhibit the over-hydrogenation of aromatics and satisfy the requirements of activity,stability and product quality.

Key words: aromatics, zeolite, hydrogenation, preparation

摘要： 综述了近年来芳烃转化领域中贵金属/分子筛双功能催化剂的研究进展。从双功能催化剂的特征出发，结合催化机理探讨了金属与分子筛酸位的协同催化作用。同时，结合催化剂的制备方法分别讨论了金属的性质、分子筛的性质及预处理工艺等因素对催化性能的影响机制。通过回顾贵金属/分子筛双功能催化剂对芳烃催化转化的反应特征，指出了在分子筛上引入加氢金属组分是调节产物分布、提高反应活性及催化稳定性的有效途径，而进一步优化催化性能的关键是调节双功能催化剂上的加氢作用与酸催化作用的平衡，抑制芳烃过度加氢副反应的同时，满足活性、稳定性及产品质量的综合要求。

关键词: 芳烃, 分子筛, 加氢, 制备

CLC Number:

O643.3

DENG Chenghao, QI Xiaolan, ZHENG Junlin, KONG Dejin, TANG Yi. Advances in the noble metal-zeolite catalysts for aromatic conversion[J]. Chemical Industry and Engineering Progress, 2017, 36(05): 1711-1718.

邓澄浩, 祁晓岚, 郑均林, 孔德金, 唐颐. 贵金属/分子筛催化芳烃转化的研究进展[J]. 化工进展, 2017, 36(05): 1711-1718.

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