Microdroplet Cascade Catalysis for Highly Selective Production of Propylene Glycol under Ambient Conditions

IF 14.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of the American Chemical Society Pub Date : 2025-05-01 DOI:10.1021/jacs.4c17760

Jianing Dong, Jiajia Xu, Zhao-Dong Meng, Zi-Ang Nan, Weixin Li, Richard N. Zare, Zhong-Qun Tian, Feng Ru Fan

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引用次数: 0

Abstract

Conventional propylene glycol (PG) production relies on an energy-intensive two-step thermocatalytic process, contributing significantly to CO₂ emissions. A sustainable alternative under ambient conditions remains elusive, hindered by challenges in selectivity and energy efficiency. Here, we present a cascade catalysis strategy for efficient and selective PG production within water microdroplets under ambient conditions. Propylene (CH₃CH═CH₂) is converted to PG (CH₃CH(OH)CH₂OH) at the microdroplet/titanium silicalite-1 (TS-1) interface, driven by in situ generated hydrogen peroxide (H₂O₂) via methyl viologen catalysis. This approach harnesses the water microdroplet interface to confine the reaction, enhancing catalytic activity and increasing selectivity. Our system achieves a PG production efficiency of 680 μM and a selectivity of 88%, while minimizing unwanted side products and energy demands. This innovative method offers a sustainable pathway for PG synthesis and highlights the transformative potential of water microdroplet technology in advancing green chemistry and industrial applications.

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微滴级联催化在环境条件下高选择性生产丙二醇

传统的丙二醇（PG）生产依赖于能源密集型的两步热催化过程，这对二氧化碳排放有很大贡献。环境条件下的可持续替代方案仍然难以捉摸，受到选择性和能源效率挑战的阻碍。在这里，我们提出了一种级联催化策略，用于在环境条件下在水微滴内高效和选择性地生产PG。丙烯（CH3CH CH2）在微滴/硅钛-1 （TS-1）界面上由原位生成的过氧化氢（H2O2）通过甲基紫素催化转化为PG （CH3CH(OH)CH2OH）。这种方法利用水微滴界面来限制反应，提高催化活性和选择性。该系统实现了680 μM的PG生产效率和88%的选择性，同时最大限度地减少了不必要的副产品和能源需求。这种创新的方法为PG合成提供了可持续的途径，并突出了水微滴技术在推进绿色化学和工业应用方面的变革潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the American Chemical Society 化学-化学综合

CiteScore

24.40

自引率

6.00%

发文量

2398

审稿时长

1.6 months

期刊介绍： The flagship journal of the American Chemical Society, known as the Journal of the American Chemical Society (JACS), has been a prestigious publication since its establishment in 1879. It holds a preeminent position in the field of chemistry and related interdisciplinary sciences. JACS is committed to disseminating cutting-edge research papers, covering a wide range of topics, and encompasses approximately 19,000 pages of Articles, Communications, and Perspectives annually. With a weekly publication frequency, JACS plays a vital role in advancing the field of chemistry by providing essential research.