Synthesis of Na2WO4-MnxOy supported on SiO2 or La2O3 as fiber catalysts by electrospinning for oxidative coupling of methane

The oxidative coupling of methane (OCM) is an attractive route to convert natural gas directly into value-added chemical products (C2+). This work comparatively investigated SiO2- or La2O3-supported Na2WO4-MnxOy (denoted as NWM) catalysts in powder and fiber forms. The powder catalysts were prepared...

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Autores principales:	Kanticha Jaroenpanon, Worapinit Tiyatha, Thanaphat Chukeaw, Sarannuch Sringam, Thongthai Witoon, Chularat Wattanakit, Metta Chareonpanich, Kajornsak Faungnawakij, Anusorn Seubsai
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Fiber catalyst La2O3 Na2WO4 Oxidative coupling of methane SiO2 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/ac415b67180c4406bc9331c96a349f51
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spelling	oai:doaj.org-article:ac415b67180c4406bc9331c96a349f512021-11-28T04:29:38ZSynthesis of Na2WO4-MnxOy supported on SiO2 or La2O3 as fiber catalysts by electrospinning for oxidative coupling of methane1878-535210.1016/j.arabjc.2021.103577https://doaj.org/article/ac415b67180c4406bc9331c96a349f512022-02-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S187853522100592Xhttps://doaj.org/toc/1878-5352The oxidative coupling of methane (OCM) is an attractive route to convert natural gas directly into value-added chemical products (C2+). This work comparatively investigated SiO2- or La2O3-supported Na2WO4-MnxOy (denoted as NWM) catalysts in powder and fiber forms. The powder catalysts were prepared using a co-impregnation method and the fiber catalysts were prepared successfully using an electrospinning technique. The NWM/La2O3 fiber catalysts were activated at low temperature (500 °C) and had a 4.7% C2+ yield, with the maximum C2+ yield of 9.6% at 650 °C, while the NWM/SiO2 fiber catalyst was activated at 650 °C and had a maximum C2+ yield of 20.4% at 700 °C. The XPS results in the O 1s region indicated that NWM/La2O3 had a lower binding energy than NWM/SiO2, suggesting that the lattice oxygen species is easily released from the catalyst surface and creates vacancy sites that enhance performance. The stability test of the catalysts indicated that the La2O3-containing catalysts had excellent activity and high thermal stability, while the SiO2-containing catalysts had a higher C2+ yield when the prepared catalysts were compared at 700 °C. Considering the same component catalysts, the fiber catalysts achieved higher performance because their heat and mass transfer properties were enhanced.Kanticha JaroenpanonWorapinit TiyathaThanaphat ChukeawSarannuch SringamThongthai WitoonChularat WattanakitMetta ChareonpanichKajornsak FaungnawakijAnusorn SeubsaiElsevierarticleFiber catalystLa2O3Na2WO4Oxidative coupling of methaneSiO2ChemistryQD1-999ENArabian Journal of Chemistry, Vol 15, Iss 2, Pp 103577- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Fiber catalyst La2O3 Na2WO4 Oxidative coupling of methane SiO2 Chemistry QD1-999
spellingShingle	Fiber catalyst La2O3 Na2WO4 Oxidative coupling of methane SiO2 Chemistry QD1-999 Kanticha Jaroenpanon Worapinit Tiyatha Thanaphat Chukeaw Sarannuch Sringam Thongthai Witoon Chularat Wattanakit Metta Chareonpanich Kajornsak Faungnawakij Anusorn Seubsai Synthesis of Na2WO4-MnxOy supported on SiO2 or La2O3 as fiber catalysts by electrospinning for oxidative coupling of methane
description	The oxidative coupling of methane (OCM) is an attractive route to convert natural gas directly into value-added chemical products (C2+). This work comparatively investigated SiO2- or La2O3-supported Na2WO4-MnxOy (denoted as NWM) catalysts in powder and fiber forms. The powder catalysts were prepared using a co-impregnation method and the fiber catalysts were prepared successfully using an electrospinning technique. The NWM/La2O3 fiber catalysts were activated at low temperature (500 °C) and had a 4.7% C2+ yield, with the maximum C2+ yield of 9.6% at 650 °C, while the NWM/SiO2 fiber catalyst was activated at 650 °C and had a maximum C2+ yield of 20.4% at 700 °C. The XPS results in the O 1s region indicated that NWM/La2O3 had a lower binding energy than NWM/SiO2, suggesting that the lattice oxygen species is easily released from the catalyst surface and creates vacancy sites that enhance performance. The stability test of the catalysts indicated that the La2O3-containing catalysts had excellent activity and high thermal stability, while the SiO2-containing catalysts had a higher C2+ yield when the prepared catalysts were compared at 700 °C. Considering the same component catalysts, the fiber catalysts achieved higher performance because their heat and mass transfer properties were enhanced.
format	article
author	Kanticha Jaroenpanon Worapinit Tiyatha Thanaphat Chukeaw Sarannuch Sringam Thongthai Witoon Chularat Wattanakit Metta Chareonpanich Kajornsak Faungnawakij Anusorn Seubsai
author_facet	Kanticha Jaroenpanon Worapinit Tiyatha Thanaphat Chukeaw Sarannuch Sringam Thongthai Witoon Chularat Wattanakit Metta Chareonpanich Kajornsak Faungnawakij Anusorn Seubsai
author_sort	Kanticha Jaroenpanon
title	Synthesis of Na2WO4-MnxOy supported on SiO2 or La2O3 as fiber catalysts by electrospinning for oxidative coupling of methane
title_short	Synthesis of Na2WO4-MnxOy supported on SiO2 or La2O3 as fiber catalysts by electrospinning for oxidative coupling of methane
title_full	Synthesis of Na2WO4-MnxOy supported on SiO2 or La2O3 as fiber catalysts by electrospinning for oxidative coupling of methane
title_fullStr	Synthesis of Na2WO4-MnxOy supported on SiO2 or La2O3 as fiber catalysts by electrospinning for oxidative coupling of methane
title_full_unstemmed	Synthesis of Na2WO4-MnxOy supported on SiO2 or La2O3 as fiber catalysts by electrospinning for oxidative coupling of methane
title_sort	synthesis of na2wo4-mnxoy supported on sio2 or la2o3 as fiber catalysts by electrospinning for oxidative coupling of methane
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/ac415b67180c4406bc9331c96a349f51
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Synthesis of Na2WO4-MnxOy supported on SiO2 or La2O3 as fiber catalysts by electrospinning for oxidative coupling of methane

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