Removal of HCl from a gas phase by MgO under atmospheric conditions
Ensuring the safety of researchers by protecting them from exposure to toxic gases in laboratories is of paramount importance. This study investigated the effectiveness of using high-surface-area MgO to remove HCl under atmospheric conditions. Two types of MgO were synthesized through the thermal de...
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Published in | Science and technology of advanced materials Vol. 26; no. 1; p. 2454215 |
---|---|
Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Taylor & Francis
2025
Taylor & Francis Group |
Subjects | |
Online Access | Get full text |
ISSN | 1468-6996 1878-5514 |
DOI | 10.1080/14686996.2025.2454215 |
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Abstract | Ensuring the safety of researchers by protecting them from exposure to toxic gases in laboratories is of paramount importance. This study investigated the effectiveness of using high-surface-area MgO to remove HCl under atmospheric conditions. Two types of MgO were synthesized through the thermal decomposition 1-1-1, Tennodai, Tsukuba, of Mg(OH)
and MgC
O
·2 H
O. HCl diluted with air passed through both MgO samples, and the amounts of HCl removed and morphological changes in the samples were compared. No significant differences in surface area or crystallinity were observed with the decomposition temperatures. X-ray diffraction analysis showed that the sample prepared from MgC
O
·2 H
O reacted with HCl immediately upon introducing HCl gas. In contrast, the sample obtained from Mg(OH)
exhibited only MgO peaks, even 30 min after the introduction of HCl gas. Microscopic analysis revealed that the samples derived from Mg(OH)
showed no significant changes in shape after the reaction, whereas the MgO prepared from MgC
O
·2 H
O exhibited substantial changes in overall shape. No correlation was observed between the surface area and the amount of HCl removed. When MgO is prepared from MgC
O
·2 H
O, the reaction occurs in the bulk material, whereas when MgO is prepared from Mg(OH)
, the reaction hardly progresses after HCl adsorbs onto the MgO surface. The order of magnitude of HCl removal was consistent with the base catalytic activity of the decomposition of diacetone alcohol to acetone. These results suggest that, compared with MgO obtained from Mg(OH)
, MgO derived from MgC
O
·2 H
O generates more active sites, resulting in the reaction with HCl from surface to progress into bulk. |
---|---|
AbstractList | Ensuring the safety of researchers by protecting them from exposure to toxic gases in laboratories is of paramount importance. This study investigated the effectiveness of using high-surface-area MgO to remove HCl under atmospheric conditions. Two types of MgO were synthesized through the thermal decomposition 1-1-1, Tennodai, Tsukuba, of Mg(OH)
2
and MgC
2
O
4
·2 H
2
O. HCl diluted with air passed through both MgO samples, and the amounts of HCl removed and morphological changes in the samples were compared. No significant differences in surface area or crystallinity were observed with the decomposition temperatures. X-ray diffraction analysis showed that the sample prepared from MgC
2
O
4
·2 H
2
O reacted with HCl immediately upon introducing HCl gas. In contrast, the sample obtained from Mg(OH)
2
exhibited only MgO peaks, even 30 min after the introduction of HCl gas. Microscopic analysis revealed that the samples derived from Mg(OH)
2
showed no significant changes in shape after the reaction, whereas the MgO prepared from MgC
2
O
4
·2 H
2
O exhibited substantial changes in overall shape. No correlation was observed between the surface area and the amount of HCl removed. When MgO is prepared from MgC
2
O
4
·2 H
2
O, the reaction occurs in the bulk material, whereas when MgO is prepared from Mg(OH)
2
, the reaction hardly progresses after HCl adsorbs onto the MgO surface. The order of magnitude of HCl removal was consistent with the base catalytic activity of the decomposition of diacetone alcohol to acetone. These results suggest that, compared with MgO obtained from Mg(OH)
2
, MgO derived from MgC
2
O
4
·2 H
2
O generates more active sites, resulting in the reaction with HCl from surface to progress into bulk.
This study revealed that MgO derived from MgC
2
O
4
·2H
2
O generates more active sites that initiate the reaction with HCl under atmospheric conditions compared with MgO obtained from Mg(OH)
2 Ensuring the safety of researchers by protecting them from exposure to toxic gases in laboratories is of paramount importance. This study investigated the effectiveness of using high-surface-area MgO to remove HCl under atmospheric conditions. Two types of MgO were synthesized through the thermal decomposition 1-1-1, Tennodai, Tsukuba, of Mg(OH)2 and MgC2O4·2 H2O. HCl diluted with air passed through both MgO samples, and the amounts of HCl removed and morphological changes in the samples were compared. No significant differences in surface area or crystallinity were observed with the decomposition temperatures. X-ray diffraction analysis showed that the sample prepared from MgC2O4·2 H2O reacted with HCl immediately upon introducing HCl gas. In contrast, the sample obtained from Mg(OH)2 exhibited only MgO peaks, even 30 min after the introduction of HCl gas. Microscopic analysis revealed that the samples derived from Mg(OH)2 showed no significant changes in shape after the reaction, whereas the MgO prepared from MgC2O4·2 H2O exhibited substantial changes in overall shape. No correlation was observed between the surface area and the amount of HCl removed. When MgO is prepared from MgC2O4·2 H2O, the reaction occurs in the bulk material, whereas when MgO is prepared from Mg(OH)2, the reaction hardly progresses after HCl adsorbs onto the MgO surface. The order of magnitude of HCl removal was consistent with the base catalytic activity of the decomposition of diacetone alcohol to acetone. These results suggest that, compared with MgO obtained from Mg(OH)2, MgO derived from MgC2O4·2 H2O generates more active sites, resulting in the reaction with HCl from surface to progress into bulk.Ensuring the safety of researchers by protecting them from exposure to toxic gases in laboratories is of paramount importance. This study investigated the effectiveness of using high-surface-area MgO to remove HCl under atmospheric conditions. Two types of MgO were synthesized through the thermal decomposition 1-1-1, Tennodai, Tsukuba, of Mg(OH)2 and MgC2O4·2 H2O. HCl diluted with air passed through both MgO samples, and the amounts of HCl removed and morphological changes in the samples were compared. No significant differences in surface area or crystallinity were observed with the decomposition temperatures. X-ray diffraction analysis showed that the sample prepared from MgC2O4·2 H2O reacted with HCl immediately upon introducing HCl gas. In contrast, the sample obtained from Mg(OH)2 exhibited only MgO peaks, even 30 min after the introduction of HCl gas. Microscopic analysis revealed that the samples derived from Mg(OH)2 showed no significant changes in shape after the reaction, whereas the MgO prepared from MgC2O4·2 H2O exhibited substantial changes in overall shape. No correlation was observed between the surface area and the amount of HCl removed. When MgO is prepared from MgC2O4·2 H2O, the reaction occurs in the bulk material, whereas when MgO is prepared from Mg(OH)2, the reaction hardly progresses after HCl adsorbs onto the MgO surface. The order of magnitude of HCl removal was consistent with the base catalytic activity of the decomposition of diacetone alcohol to acetone. These results suggest that, compared with MgO obtained from Mg(OH)2, MgO derived from MgC2O4·2 H2O generates more active sites, resulting in the reaction with HCl from surface to progress into bulk. Ensuring the safety of researchers by protecting them from exposure to toxic gases in laboratories is of paramount importance. This study investigated the effectiveness of using high-surface-area MgO to remove HCl under atmospheric conditions. Two types of MgO were synthesized through the thermal decomposition 1-1-1, Tennodai, Tsukuba, of Mg(OH) and MgC O ·2 H O. HCl diluted with air passed through both MgO samples, and the amounts of HCl removed and morphological changes in the samples were compared. No significant differences in surface area or crystallinity were observed with the decomposition temperatures. X-ray diffraction analysis showed that the sample prepared from MgC O ·2 H O reacted with HCl immediately upon introducing HCl gas. In contrast, the sample obtained from Mg(OH) exhibited only MgO peaks, even 30 min after the introduction of HCl gas. Microscopic analysis revealed that the samples derived from Mg(OH) showed no significant changes in shape after the reaction, whereas the MgO prepared from MgC O ·2 H O exhibited substantial changes in overall shape. No correlation was observed between the surface area and the amount of HCl removed. When MgO is prepared from MgC O ·2 H O, the reaction occurs in the bulk material, whereas when MgO is prepared from Mg(OH) , the reaction hardly progresses after HCl adsorbs onto the MgO surface. The order of magnitude of HCl removal was consistent with the base catalytic activity of the decomposition of diacetone alcohol to acetone. These results suggest that, compared with MgO obtained from Mg(OH) , MgO derived from MgC O ·2 H O generates more active sites, resulting in the reaction with HCl from surface to progress into bulk. Ensuring the safety of researchers by protecting them from exposure to toxic gases in laboratories is of paramount importance. This study investigated the effectiveness of using high-surface-area MgO to remove HCl under atmospheric conditions. Two types of MgO were synthesized through the thermal decomposition 1-1-1, Tennodai, Tsukuba, of Mg(OH)2 and MgC2O4·2 H2O. HCl diluted with air passed through both MgO samples, and the amounts of HCl removed and morphological changes in the samples were compared. No significant differences in surface area or crystallinity were observed with the decomposition temperatures. X-ray diffraction analysis showed that the sample prepared from MgC2O4·2 H2O reacted with HCl immediately upon introducing HCl gas. In contrast, the sample obtained from Mg(OH)2 exhibited only MgO peaks, even 30 min after the introduction of HCl gas. Microscopic analysis revealed that the samples derived from Mg(OH)2 showed no significant changes in shape after the reaction, whereas the MgO prepared from MgC2O4·2 H2O exhibited substantial changes in overall shape. No correlation was observed between the surface area and the amount of HCl removed. When MgO is prepared from MgC2O4·2 H2O, the reaction occurs in the bulk material, whereas when MgO is prepared from Mg(OH)2, the reaction hardly progresses after HCl adsorbs onto the MgO surface. The order of magnitude of HCl removal was consistent with the base catalytic activity of the decomposition of diacetone alcohol to acetone. These results suggest that, compared with MgO obtained from Mg(OH)2, MgO derived from MgC2O4·2 H2O generates more active sites, resulting in the reaction with HCl from surface to progress into bulk. |
Author | Matsuhashi, Hiromi Takahashi, Kazuya Kitagawa, Michiko Kidera, Masanori Kondo, Takahiro |
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BackLink | https://www.ncbi.nlm.nih.gov/pubmed/39912054$$D View this record in MEDLINE/PubMed |
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Cites_doi | 10.1007/s11164-015-1971-z 10.1021/cr00016a003 10.1021/acs.jpcc.1c01470 10.1007/s11663-005-0069-1 10.1248/yakushi.129.53 10.1016/j.jcis.2010.09.041 10.1039/b608719a 10.1021/ja00238a020 10.1055/s-2005-918467 10.1627/jpi.47.67 10.1016/S1381-1169(99)00035-7 10.1063/1.468335 10.1016/j.saa.2013.10.041 10.1021/jp984689u 10.1021/cm950584h 10.1016/S0926-860X(01)00839-0 10.1007/s11164-020-04169-w 10.1021/cm00025a015 10.1021/jp960224x |
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Keywords | atmospheric condition surface area MgO catalyst remove HCl active site base |
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References | Hattori H (e_1_3_3_11_1) 2004; 47 e_1_3_3_7_1 e_1_3_3_6_1 e_1_3_3_9_1 e_1_3_3_8_1 e_1_3_3_18_1 e_1_3_3_17_1 Colucccia A (e_1_3_3_20_1) 1981; 7 e_1_3_3_19_1 e_1_3_3_14_1 Seto Y (e_1_3_3_4_1) 2009; 129 e_1_3_3_13_1 e_1_3_3_16_1 e_1_3_3_15_1 e_1_3_3_3_1 e_1_3_3_10_1 e_1_3_3_21_1 e_1_3_3_2_1 e_1_3_3_5_1 e_1_3_3_12_1 |
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SubjectTerms | active site atmospheric condition base MgO New topics/Others remove HCl surface area |
Title | Removal of HCl from a gas phase by MgO under atmospheric conditions |
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