Adsorption/oxidation of sulfur-containing gases on nitrogen-doped activated carbon

Coconut shell-based activated carbon (CAC) was used for the removal of methyl mercaptan (MM). CAC was modified by urea impregnation and calcined at 450°C and 950°C. The desulfurization activity was determined in a fixed bed reactor under room temperature. The results showed that the methyl mercaptan...

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Main Authors: Liu Qiang, Ke Ming, Yu Pei, Hu Hai Qiang, Yan Xi Ming
Format: Article
Language:English
Published: EDP Sciences 2016-01-01
Series:MATEC Web of Conferences
Online Access:http://dx.doi.org/10.1051/matecconf/20166301033
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spelling doaj-0c662a2066d143bb9e85deef58d1dc2b2021-02-02T02:47:57ZengEDP SciencesMATEC Web of Conferences2261-236X2016-01-01630103310.1051/matecconf/20166301033matecconf_mmme2016_01033Adsorption/oxidation of sulfur-containing gases on nitrogen-doped activated carbonLiu Qiang0Ke Ming1Yu Pei2Hu Hai Qiang3Yan Xi Ming4College of Science, China University of Petroleum-BeijingCollege of Science, China University of Petroleum-BeijingCollege of Science, China University of Petroleum-BeijingCollege of Science, China University of Petroleum-BeijingCollege of Science, China University of Petroleum-BeijingCoconut shell-based activated carbon (CAC) was used for the removal of methyl mercaptan (MM). CAC was modified by urea impregnation and calcined at 450°C and 950°C. The desulfurization activity was determined in a fixed bed reactor under room temperature. The results showed that the methyl mercaptan adsorption/oxidation capacity of modified carbon caicined at 950°C is more than 3 times the capacity of original samples. On the other hand, the modified carbon caicined at 950°C also has a high capacity for the simultaneous adsorption/oxidation of methyl mercaptan and hydrogen sulfide.The introduce of basic nitrogen groups siginificantly increases the desulfurization since it can facilitate the electron transfer process between sulfur and oxygen. The structure and chemical properties are characterized using Boehm titration, N2 adsorption-desorption method, thermal analysis and elemental analysis. The results showed that the major oxidation products were dimethyl disulfide and methanesulfonic acid which adsorbed in the activated carbon.http://dx.doi.org/10.1051/matecconf/20166301033
collection DOAJ
language English
format Article
sources DOAJ
author Liu Qiang
Ke Ming
Yu Pei
Hu Hai Qiang
Yan Xi Ming
spellingShingle Liu Qiang
Ke Ming
Yu Pei
Hu Hai Qiang
Yan Xi Ming
Adsorption/oxidation of sulfur-containing gases on nitrogen-doped activated carbon
MATEC Web of Conferences
author_facet Liu Qiang
Ke Ming
Yu Pei
Hu Hai Qiang
Yan Xi Ming
author_sort Liu Qiang
title Adsorption/oxidation of sulfur-containing gases on nitrogen-doped activated carbon
title_short Adsorption/oxidation of sulfur-containing gases on nitrogen-doped activated carbon
title_full Adsorption/oxidation of sulfur-containing gases on nitrogen-doped activated carbon
title_fullStr Adsorption/oxidation of sulfur-containing gases on nitrogen-doped activated carbon
title_full_unstemmed Adsorption/oxidation of sulfur-containing gases on nitrogen-doped activated carbon
title_sort adsorption/oxidation of sulfur-containing gases on nitrogen-doped activated carbon
publisher EDP Sciences
series MATEC Web of Conferences
issn 2261-236X
publishDate 2016-01-01
description Coconut shell-based activated carbon (CAC) was used for the removal of methyl mercaptan (MM). CAC was modified by urea impregnation and calcined at 450°C and 950°C. The desulfurization activity was determined in a fixed bed reactor under room temperature. The results showed that the methyl mercaptan adsorption/oxidation capacity of modified carbon caicined at 950°C is more than 3 times the capacity of original samples. On the other hand, the modified carbon caicined at 950°C also has a high capacity for the simultaneous adsorption/oxidation of methyl mercaptan and hydrogen sulfide.The introduce of basic nitrogen groups siginificantly increases the desulfurization since it can facilitate the electron transfer process between sulfur and oxygen. The structure and chemical properties are characterized using Boehm titration, N2 adsorption-desorption method, thermal analysis and elemental analysis. The results showed that the major oxidation products were dimethyl disulfide and methanesulfonic acid which adsorbed in the activated carbon.
url http://dx.doi.org/10.1051/matecconf/20166301033
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AT keming adsorptionoxidationofsulfurcontaininggasesonnitrogendopedactivatedcarbon
AT yupei adsorptionoxidationofsulfurcontaininggasesonnitrogendopedactivatedcarbon
AT huhaiqiang adsorptionoxidationofsulfurcontaininggasesonnitrogendopedactivatedcarbon
AT yanximing adsorptionoxidationofsulfurcontaininggasesonnitrogendopedactivatedcarbon
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