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基于非水解溶胶-凝胶合成法制备的钨基催化剂上甘油气相脱水制丙烯醛

Gas phase dehydration of glycerol to acrolein over WO-based catalysts prepared by non-hydrolytic sol-gel synthesis.

作者信息

Nadji L, Massó A, Delgado D, Issaadi R, Rodriguez-Aguado E, Rodriguez-Castellón E, Nieto J M López

机构信息

Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas Avenida de los Naranjos s/n 46022 Valencia Spain

Laboratoire des Applications Energétiques de l'Hydrogène, Faculté de Technologie, Université Saad Dahlab Blida 1 Algeria.

出版信息

RSC Adv. 2018 Apr 10;8(24):13344-13352. doi: 10.1039/c8ra01575a. eCollection 2018 Apr 9.

DOI:10.1039/c8ra01575a
PMID:35542536
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9079827/
Abstract

Solid acid catalysts based on WO-SiO and WO-ZrO-SiO were prepared by one-pot non-hydrolytic sol-gel method and tested in the gas phase glycerol dehydration to acrolein. Their structural and textural characteristics were determined by X-ray diffraction (XRD), N adsorption, X-ray energy dispersive spectroscopy (XEDS), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). Their acid characteristics were studied by both temperature programmed desorption of ammonia (NH-TPD) and FTIR of adsorbed pyridine. Under our operating conditions, all the catalysts were active and selective in the transformation of glycerol to acrolein, which was always the main reaction product. The high selectivity to acrolein is achieved on catalysts presenting a higher proportion of Brønsted acid sites. In addition, the role of oxygen in the feed on catalytic performance of these catalysts is also discussed.

摘要

采用一锅法非水解溶胶-凝胶法制备了基于WO-SiO和WO-ZrO-SiO的固体酸催化剂，并在甘油气相脱水制丙烯醛反应中进行了测试。通过X射线衍射（XRD）、N吸附、X射线能量色散光谱（XEDS）、傅里叶变换红外光谱（FTIR）、拉曼光谱和X射线光电子能谱（XPS）对其结构和织构特性进行了测定。通过氨程序升温脱附（NH-TPD）和吸附吡啶的FTIR对其酸性特征进行了研究。在我们的操作条件下，所有催化剂在甘油转化为丙烯醛的反应中均具有活性和选择性，丙烯醛始终是主要反应产物。在具有较高比例布朗斯特酸位的催化剂上可实现对丙烯醛的高选择性。此外，还讨论了进料中的氧对这些催化剂催化性能的作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2d2/9079827/b45d7be88da0/c8ra01575a-f9.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2d2/9079827/b45d7be88da0/c8ra01575a-f9.jpg
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本文引用的文献

1
Acrolein Production by Gas-Phase Glycerol Dehydration Using PO₄/Nb₂O Catalysts.使用PO₄/Nb₂O催化剂通过气相甘油脱水制备丙烯醛
J Nanosci Nanotechnol. 2018 Feb 1;18(2):1312-1315. doi: 10.1166/jnn.2018.14897.
2
Vapour Phase Dehydration of Glycerol to Acrolein Over Wells-Dawson Type HP₂WO Supported on Mesoporous Silica Catalysts Prepared by Supercritical Impregnation.超临界浸渍法制备的介孔二氧化硅负载的Wells-Dawson型HP₂WO上甘油气相脱水制丙烯醛
J Nanosci Nanotechnol. 2018 Apr 1;18(4):2463-2471. doi: 10.1166/jnn.2018.14396.
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Structure-Reactivity Correlations in Vanadium-Containing Catalysts for One-Pot Glycerol Oxidehydration to Acrylic Acid.
用于甘油一锅法氧化水合制丙烯酸的含钒催化剂的结构-反应活性关系
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Catalytic oxidative dehydration of glycerol over a catalyst with iron oxide domains embedded in an iron orthovanadate phase.在铁正钒酸盐相内嵌入氧化铁畴的催化剂上催化氧化甘油脱水。
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