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Article Dans Une Revue Journal of Colloid and Interface Science Année : 2018

Combined alkali dissolution and re-assembly approach toward ZSM-5 mesostructures with extended lifetime in cumene cracking

Résumé

The basis and contribution of mesopores created in ZSM-5 structures at different treatment conditions are systematically investigated. The results reveal that the mesopores originated from the alkali dissolution of pristine ZSM-5 are mainly intracrystalline and they contribute to excessive Brønsted acid sites, while the mesopores originated from the re-assembly of alkali dissolved aluminosilicate species possess Lewis acid sites. These ZSM-5 mesostructures showed an extended lifespan during the cracking of cumene (88.0%) in comparison to the pristine ZSM-5 (27.0%) after 460 min. The zeolite mesostructures obtained in this study could be used as a base for further design of new porous materials with desired acidic properties.

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Chimie
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Dates et versions

hal-01873235 , version 1 (13-09-2018)

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Citer

Peng Peng, Shu-Zhuang Sun, Yu-Xiang Liu, Xin-Mei Liu, Svetlana Mintova, et al.. Combined alkali dissolution and re-assembly approach toward ZSM-5 mesostructures with extended lifetime in cumene cracking. Journal of Colloid and Interface Science, 2018, 529, pp.283 - 293. ⟨10.1016/j.jcis.2018.06.013⟩. ⟨hal-01873235⟩
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