Regeneration of AgXO@SBA-15 for reactive adsorptive desulfurization of fuel

Abstract Adsorbent regeneration is critical for a continuous adsorption–regeneration process and often underestimated. In this work, the regeneration of bifunctional AgXO@SBA-15 for [O]-induced reactive adsorptive desulfurization of liquid fuel is reported and further investigated. The spent AgXO@SB...

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Autores principales:	Liqiong Wu, Feiyan Ye, Dong Lei, Guang Miao, Baoyu Liu, Zhong Li, Jing Xiao
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2018
Materias:	Bifunctional Regeneration Oxidation Adsorption Deactivation Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/3f474bc414ef426ab5f5998f0661b18d
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spelling	oai:doaj.org-article:3f474bc414ef426ab5f5998f0661b18d2021-12-02T10:12:33ZRegeneration of AgXO@SBA-15 for reactive adsorptive desulfurization of fuel10.1007/s12182-018-0264-81672-51071995-8226https://doaj.org/article/3f474bc414ef426ab5f5998f0661b18d2018-10-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-018-0264-8https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Adsorbent regeneration is critical for a continuous adsorption–regeneration process and often underestimated. In this work, the regeneration of bifunctional AgXO@SBA-15 for [O]-induced reactive adsorptive desulfurization of liquid fuel is reported and further investigated. The spent AgXO@SBA-15 was regenerated in various types of solvents followed by calcination and tested in multiple desulfurization–regeneration cycles. The effects of regenerate solvents were also compared systematically. The original and regenerated AgXO@SBA-15 was characterized by X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray spectroscopy, N2 adsorption, X-ray photoelectron spectroscopy and atomic absorption spectrometry. The recovery of desulfurization capacity using various solvents follows the order of acetonitrile > acetone > ethanol > methanol > water. Owing to the complete reduction of silver species to Ag0 and severe agglomeration of Ag0, the bifunctional AgXO@SBA-15 demonstrating > 85% (2.60 mg-S/g) of sulfur removal dramatically reduced to < 46% (1.56 mg-S/g) after only 1st-cycle regeneration. It is suggested that polar organic species strongly adsorbed (or residual) on the spent AgXO@SBA-15, in that case, after solvent wash may contribute to the accelerated decomposition of Ag+ to Ag0 in the following calcination step. The desulfurization capacity decreased rather mildly in the later regeneration runs. Cautious choice of regeneration conditions and strategies to rational design stabilized adsorbents is required to avert the adsorbent deactivation.Liqiong WuFeiyan YeDong LeiGuang MiaoBaoyu LiuZhong LiJing XiaoKeAi Communications Co., Ltd.articleBifunctionalRegenerationOxidationAdsorptionDeactivationScienceQPetrologyQE420-499ENPetroleum Science, Vol 15, Iss 4, Pp 857-869 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Bifunctional Regeneration Oxidation Adsorption Deactivation Science Q Petrology QE420-499
spellingShingle	Bifunctional Regeneration Oxidation Adsorption Deactivation Science Q Petrology QE420-499 Liqiong Wu Feiyan Ye Dong Lei Guang Miao Baoyu Liu Zhong Li Jing Xiao Regeneration of AgXO@SBA-15 for reactive adsorptive desulfurization of fuel
description	Abstract Adsorbent regeneration is critical for a continuous adsorption–regeneration process and often underestimated. In this work, the regeneration of bifunctional AgXO@SBA-15 for [O]-induced reactive adsorptive desulfurization of liquid fuel is reported and further investigated. The spent AgXO@SBA-15 was regenerated in various types of solvents followed by calcination and tested in multiple desulfurization–regeneration cycles. The effects of regenerate solvents were also compared systematically. The original and regenerated AgXO@SBA-15 was characterized by X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray spectroscopy, N2 adsorption, X-ray photoelectron spectroscopy and atomic absorption spectrometry. The recovery of desulfurization capacity using various solvents follows the order of acetonitrile > acetone > ethanol > methanol > water. Owing to the complete reduction of silver species to Ag0 and severe agglomeration of Ag0, the bifunctional AgXO@SBA-15 demonstrating > 85% (2.60 mg-S/g) of sulfur removal dramatically reduced to < 46% (1.56 mg-S/g) after only 1st-cycle regeneration. It is suggested that polar organic species strongly adsorbed (or residual) on the spent AgXO@SBA-15, in that case, after solvent wash may contribute to the accelerated decomposition of Ag+ to Ag0 in the following calcination step. The desulfurization capacity decreased rather mildly in the later regeneration runs. Cautious choice of regeneration conditions and strategies to rational design stabilized adsorbents is required to avert the adsorbent deactivation.
format	article
author	Liqiong Wu Feiyan Ye Dong Lei Guang Miao Baoyu Liu Zhong Li Jing Xiao
author_facet	Liqiong Wu Feiyan Ye Dong Lei Guang Miao Baoyu Liu Zhong Li Jing Xiao
author_sort	Liqiong Wu
title	Regeneration of AgXO@SBA-15 for reactive adsorptive desulfurization of fuel
title_short	Regeneration of AgXO@SBA-15 for reactive adsorptive desulfurization of fuel
title_full	Regeneration of AgXO@SBA-15 for reactive adsorptive desulfurization of fuel
title_fullStr	Regeneration of AgXO@SBA-15 for reactive adsorptive desulfurization of fuel
title_full_unstemmed	Regeneration of AgXO@SBA-15 for reactive adsorptive desulfurization of fuel
title_sort	regeneration of agxo@sba-15 for reactive adsorptive desulfurization of fuel
publisher	KeAi Communications Co., Ltd.
publishDate	2018
url	https://doaj.org/article/3f474bc414ef426ab5f5998f0661b18d
work_keys_str_mv	AT liqiongwu regenerationofagxosba15forreactiveadsorptivedesulfurizationoffuel AT feiyanye regenerationofagxosba15forreactiveadsorptivedesulfurizationoffuel AT donglei regenerationofagxosba15forreactiveadsorptivedesulfurizationoffuel AT guangmiao regenerationofagxosba15forreactiveadsorptivedesulfurizationoffuel AT baoyuliu regenerationofagxosba15forreactiveadsorptivedesulfurizationoffuel AT zhongli regenerationofagxosba15forreactiveadsorptivedesulfurizationoffuel AT jingxiao regenerationofagxosba15forreactiveadsorptivedesulfurizationoffuel
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Regeneration of AgXO@SBA-15 for reactive adsorptive desulfurization of fuel

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