Propane dehydro-aromatization reaction over PtFe@S-1 coupling with Zn/ZSM-5 tandem catalysts: the role of Zn species

IF 4.3 3区工程技术 Q2 ENGINEERING, CHEMICAL Frontiers of Chemical Science and Engineering Pub Date : 2024-04-22 DOI:10.1007/s11705-024-2440-2

Kai Bian, Sirui Liu, Huahua Fan, Guanghui Zhang, Xinwei Zhang, Gideon Abaidoo Ocran, Mingrui Wang, Quanjie Liu, Xiaowa Nie, Shuandi Hou, Xinwen Guo

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Abstract

Unraveling the structure-activity relationship and improving the catalytic performance is paramount in propane dehydro-aromatization reactions. Herein, a tandem catalyst with high propane dehydro-aromatization reaction performance was prepared via coupling the PtFe@S-1 with Zn/ZSM-5 zeolites (PtFe@S-1&1.0Zn/ZSM-5), which exhibits high dehydrogenation activity, aromatics selectivity (∼60% at ∼78% propane conversion), and stability. The addition of zinc inhibits the cleavage of C₆⁼ intermediates on ZSM-5 and promotes the aromatization pathway by weakening zeolite acid strength, significantly improving the selectivity to aromatics. This understanding of the structure-activity relationship in propane dehydro-aromatization reaction helps develop future high-performance catalysts.

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PtFe@S-1 与 Zn/ZSM-5 串联催化剂上的丙烷脱氢芳构化反应：Zn 物种的作用

在丙烷脱氢芳构化反应中，揭示结构-活性关系并提高催化性能至关重要。本文通过将 PtFe@S-1 与 Zn/ZSM-5 沸石（PtFe@S-1&1.0Zn/ZSM-5）偶联，制备了一种具有高丙烷脱氢-芳烃化反应性能的串联催化剂，该催化剂具有较高的脱氢活性、芳烃选择性（在丙烷转化率为 78% ∼ 60% 时）和稳定性。锌的加入抑制了 ZSM-5 上 C6= 中间体的裂解，并通过削弱沸石的酸强度来促进芳香化途径，从而显著提高了对芳烃的选择性。对丙烷脱氢芳构化反应中结构-活性关系的了解有助于开发未来的高性能催化剂。

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来源期刊

Frontiers of Chemical Science and Engineering ENGINEERING, CHEMICAL-

CiteScore

7.60

自引率

6.70%

发文量

868

审稿时长

1 months

期刊介绍： Frontiers of Chemical Science and Engineering presents the latest developments in chemical science and engineering, emphasizing emerging and multidisciplinary fields and international trends in research and development. The journal promotes communication and exchange between scientists all over the world. The contents include original reviews, research papers and short communications. Coverage includes catalysis and reaction engineering, clean energy, functional material, nanotechnology and nanoscience, biomaterials and biotechnology, particle technology and multiphase processing, separation science and technology, sustainable technologies and green processing.