Methanol to aromatics: isolated zinc phosphate groups on HZSM-5 zeolite enhance BTX selectivity and catalytic stability

HZSM-5 zeolite combined with unique zinc and phosphorus species, yields excellent selectivity (∼85%) to BTX (benzene, toluene, xylenes) in aromatic products. It was found that both zinc and phosphorus species were highly distributed in the pores of the zeolite channel network to form isolated zinc p...

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Detalles Bibliográficos
Autores principales: Qiao, Jian, Wang, Jianqiang, Frenkel, Anatoly I., Teng, Jiawei, Chen, Xiqiang, Xiao, Jingxian, Zhang, Tiezhu, Wang, Zhendong, Yuan, Zhiqing, Yang, Weimin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9049287/
https://www.ncbi.nlm.nih.gov/pubmed/35497458
http://dx.doi.org/10.1039/c9ra09657d
Descripción
Sumario:HZSM-5 zeolite combined with unique zinc and phosphorus species, yields excellent selectivity (∼85%) to BTX (benzene, toluene, xylenes) in aromatic products. It was found that both zinc and phosphorus species were highly distributed in the pores of the zeolite channel network to form isolated zinc phosphate groups, which directly bond to the surface of zeolite, leading to a strong Lewis acidic center and an optimized surface acidity distribution favorable for BTX formation and the hydrothermal stability of the catalyst.

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