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A solvation strategy for fabricating acid-base sites on metals/ZSM-5 towards dehydration of high-water-content methanol to dimethyl ether

Author

Listed:
  • Lv, Zedong
  • Yu, Miao
  • Li, Songnan
  • Zhang, Jiawei
  • Zhao, Jingxiang
  • Cai, Qinghai

Abstract

In the process of modified basic NaZSM-5 precursor by its impregnating in M(NO3)n (M = Al, Cu, Fe, Co, Ni, Cr, Mn, Zn) or SnCl4 acidic aqueous solutions, we shed light on the solvation effect of Mx+ cations on surface acid-base strength, and further on enhanced catalytic reactivity. The obtained results indicated that M(Sn, Fe, Cr)/NaZSM-5 prepared with pKa values of the metal salts <4 present high catalytic reactivity due to their stronger solvation prone to produce acid-base site balance on the surface. To further understand the influence of solvation, the catalytic performance of Sn/NaZSM-5 for methanol, particularly the water-containing methanol dehydration was examined, achieving high conversion and selectivity for high-water-content methanol dehydration. Meanwhile, the catalytic stability test of the catalyst was carried out and above 1000 h run lifetime was actualized without the catalyst surface composition and structure changed.

Suggested Citation

  • Lv, Zedong & Yu, Miao & Li, Songnan & Zhang, Jiawei & Zhao, Jingxiang & Cai, Qinghai, 2024. "A solvation strategy for fabricating acid-base sites on metals/ZSM-5 towards dehydration of high-water-content methanol to dimethyl ether," Renewable Energy, Elsevier, vol. 231(C).
    • Handle: RePEc:eee:renene:v:231:y:2024:i:c:s0960148124010681
    DOI: 10.1016/j.renene.2024.121000
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    References listed on IDEAS

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    1. Bakhtyari, Ali & Bardool, Roghayeh & Rahimpour, Mohammad Reza & Iulianelli, Adolfo, 2021. "Dehydration of bio-alcohols in an enhanced membrane-assisted reactor: A rigorous sensitivity analysis and multi-objective optimization," Renewable Energy, Elsevier, vol. 177(C), pages 519-543.
    2. Aristide Giuliano & Enrico Catizzone & Cesare Freda, 2021. "Process Simulation and Environmental Aspects of Dimethyl Ether Production from Digestate-Derived Syngas," IJERPH, MDPI, vol. 18(2), pages 1-21, January.
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