K3PO4/SiO2催化剂上乙二醇单乙醚脱水制乙基乙烯醚：表面酸碱性质的影响

IF 3.9 3区工程技术 Q2 ENGINEERING, CHEMICAL

Industrial & Engineering Chemistry Research Pub Date : 2025-03-13 DOI:10.1021/acs.iecr.4c03981

Huiqin Tao, Chenju Chen, Decheng Lu, Yihang Wang, Lingyun Cui, Xingge Ji, Chunlei Zhang

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引用次数: 0

摘要

本研究介绍了在二氧化硅负载的磷酸钾（K3PO4/SiO2）催化剂上，煤基乙二醇单乙醚（EGEE）气相脱水合成乙烯基醚烷基化合物的可持续方法。在440℃、1atm压力、0.56 h-1的质量时空速（WHSV）条件下，5K3PO4/SiO2催化剂的EGEE转化率为88%，乙基乙烯醚（EVE）选择性为76%。表征技术包括x射线衍射（XRD）、Brunauer-Emmett-Teller （BET）分析、热重分析（TGA）、程序升温解吸（TPD）、电感耦合等离子体（ICP）、x射线光电子能谱（XPS）和扫描电子显微镜（SEM）等，结果表明K3PO4/SiO2催化剂的优异性能归功于其良好的表面酸碱平衡特性，这是EGEE高效脱水成EVE的关键。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Dehydration of Ethylene Glycol Monoethyl Ether to Ethyl Vinyl Ether over K3PO4/SiO2 Catalyst: the Effect of Surface Acid–Base Properties

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Dehydration of Ethylene Glycol Monoethyl Ether to Ethyl Vinyl Ether over K3PO4/SiO2 Catalyst: the Effect of Surface Acid–Base Properties

This research introduces a sustainable method for synthesizing vinyl ether alkyl compounds through the gas-phase dehydration of coal-based ethylene glycol monoethyl ether (EGEE) over a silica-supported potassium phosphate (K₃PO₄/SiO₂) catalyst. Under optimized conditions of 440 °C, 1 atm pressure, and a weight hourly space velocity (WHSV) of 0.56 h^–1, the 5K₃PO₄/SiO₂ catalyst achieved an EGEE conversion of 88% and an ethyl vinyl ether (EVE) selectivity of 76%. Characterization techniques including X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analysis, thermogravimetric analysis (TGA), temperature-programmed desorption (TPD), inductively coupled plasma (ICP), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) revealed that the exceptional performance of the K₃PO₄/SiO₂ catalyst is attributed to its well-balanced surface acid–base properties, which are critical for the efficient dehydration of EGEE to EVE.

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来源期刊

Industrial & Engineering Chemistry Research 工程技术-工程：化工

CiteScore

7.40

自引率

7.10%

发文量

1467

审稿时长

2.8 months

期刊介绍： ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.