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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Online Access: | http://dx.doi.org/10.1051/matecconf/20166301033 |
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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 |
work_keys_str_mv |
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