Effect of the Post-Treatment of HZSM-5 on Catalytic Performance for Methanol to Aromatics
Li, Hui; Dong, Peng; Ji, Dong; Zhao, XinHong; Li, Chunqiang; Cheng, Chunhui; Li, Guixian
AbstractThe preparation of aromatic by methanol was the most effective way for rational utilization of resources. However, the catalyst for MTA reaction has not yet been successfully studied. Therefore, highly active and shape-selective HZSM-5 zeolite-based catalysts were designed and synthesized by post-treatments of desilication, dealumination, surface-passivation and hydrothermal treatment tuning pore structure and acid amount and acid concentration of catalysts. XRD, SEM, TEM, BET, NH3-TPD and Py-IR were used for research and analysis the structure-activity relationship between the catalysts and MTA reaction. The results showed that the total acid amount of catalyst shown a significant role in increasing the BTX selectivity. The selectivity of aromatics increased from 33 % to 58.1 % after hydrothermal treatment compared to the parent HZSM-5 zeolite due to the decreased of total acid amount. Nevertheless the weak acid sites were crucial in increasing the p-xylene selectivity. The selectivity of p-xylene reached 63.8 % and 70.1 % after hydrothermal treatment and surface-passivation due to the increased of weak acid sites, respectively. Modified HZSM-5 zeolite-base catalysts showed good application prospects in producing aromatics from methanol.
KeywordAromatics HZSM-5 zeolite p-xylene selectivity MTA reaction
Indexed BySCI ; SCIE
Funding ProjectNational Natural Science Foundation of China[21666019] ; science and technology support project of Gansu province[1604GKCD026]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000520610800036
Source libraryWOS
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorLi, Guixian
AffiliationLanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China
First Author AffilicationColl Petrochem Engn
Corresponding Author AffilicationColl Petrochem Engn
First Signature AffilicationColl Petrochem Engn
Recommended Citation
GB/T 7714
Li, Hui,Dong, Peng,Ji, Dong,et al. Effect of the Post-Treatment of HZSM-5 on Catalytic Performance for Methanol to Aromatics[J]. CHEMISTRYSELECT,2020,5(11):3413-3419.
APA Li, Hui.,Dong, Peng.,Ji, Dong.,Zhao, XinHong.,Li, Chunqiang.,...&Li, Guixian.(2020).Effect of the Post-Treatment of HZSM-5 on Catalytic Performance for Methanol to Aromatics.CHEMISTRYSELECT,5(11),3413-3419.
MLA Li, Hui,et al."Effect of the Post-Treatment of HZSM-5 on Catalytic Performance for Methanol to Aromatics".CHEMISTRYSELECT 5.11(2020):3413-3419.
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