Effect of Water on CO<sub>2</sub> Adsorption on CaNaY Zeolite: Formation of Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>), Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>)<sub>2</sub> and Ca<sup>2+</sup>(H<sub>2</sub>O)<sub>2</sub>(CO<sub>2</sub>) Complexes
Efficient CO<sub>2</sub> capture materials must possess a high adsorption capacity, suitable CO<sub>2</sub> adsorption enthalpy and resistance to water vapor. We have recently reported that Ca<sup>2+</sup> cations exchanged in FAU zeolite can attach up to three CO...
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MDPI AG
2023-08-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/16/2278 |
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| author | Nikola L. Drenchev Boris L. Shivachev Lubomir D. Dimitrov Konstantin I. Hadjiivanov |
| author_facet | Nikola L. Drenchev Boris L. Shivachev Lubomir D. Dimitrov Konstantin I. Hadjiivanov |
| author_sort | Nikola L. Drenchev |
| collection | DOAJ |
| description | Efficient CO<sub>2</sub> capture materials must possess a high adsorption capacity, suitable CO<sub>2</sub> adsorption enthalpy and resistance to water vapor. We have recently reported that Ca<sup>2+</sup> cations exchanged in FAU zeolite can attach up to three CO<sub>2</sub> molecules. Here we report the effect of water on the adsorption of CO<sub>2</sub>. Formation of Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>), Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>)<sub>2</sub> and Ca<sup>2+</sup>(H<sub>2</sub>O)<sub>2</sub>(CO<sub>2</sub>) mixed ligand complexes were established. The Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>) species are readily formed even at ambient temperature and are characterized by ν(<sup>12</sup>CO<sub>2</sub>) and ν(<sup>13</sup>CO<sub>2</sub>) infrared bands at 2358 and 2293 cm<sup>−1</sup>, respectively. The Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>)<sub>2</sub> species are produced at low temperature and are identified by a ν(<sup>13</sup>CO<sub>2</sub>) band at 2291 cm<sup>−1</sup>. In the presence of large amounts of water, Ca<sup>2+</sup>(H<sub>2</sub>O)<sub>2</sub>(CO<sub>2</sub>) complexes were also evidenced by ν(<sup>12</sup>CO<sub>2</sub>) and ν(<sup>13</sup>CO<sub>2</sub>) bands at 2348 and 2283 cm<sup>−1</sup>, respectively. The results demonstrate that, although it has a negative effect on CO<sub>2</sub> adsorption uptake, water in moderate amounts does not block CO<sub>2</sub> adsorption sites. |
| first_indexed | 2024-03-10T23:41:52Z |
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| id | doaj.art-c14b7a5c6f364dc4b8eea9edb19a8d20 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T23:41:52Z |
| publishDate | 2023-08-01 |
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| series | Nanomaterials |
| spelling | doaj.art-c14b7a5c6f364dc4b8eea9edb19a8d202023-11-19T02:26:39ZengMDPI AGNanomaterials2079-49912023-08-011316227810.3390/nano13162278Effect of Water on CO<sub>2</sub> Adsorption on CaNaY Zeolite: Formation of Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>), Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>)<sub>2</sub> and Ca<sup>2+</sup>(H<sub>2</sub>O)<sub>2</sub>(CO<sub>2</sub>) ComplexesNikola L. Drenchev0Boris L. Shivachev1Lubomir D. Dimitrov2Konstantin I. Hadjiivanov3Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, BulgariaInstitute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, 1113 Sofia, BulgariaInstitute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, BulgariaInstitute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, BulgariaEfficient CO<sub>2</sub> capture materials must possess a high adsorption capacity, suitable CO<sub>2</sub> adsorption enthalpy and resistance to water vapor. We have recently reported that Ca<sup>2+</sup> cations exchanged in FAU zeolite can attach up to three CO<sub>2</sub> molecules. Here we report the effect of water on the adsorption of CO<sub>2</sub>. Formation of Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>), Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>)<sub>2</sub> and Ca<sup>2+</sup>(H<sub>2</sub>O)<sub>2</sub>(CO<sub>2</sub>) mixed ligand complexes were established. The Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>) species are readily formed even at ambient temperature and are characterized by ν(<sup>12</sup>CO<sub>2</sub>) and ν(<sup>13</sup>CO<sub>2</sub>) infrared bands at 2358 and 2293 cm<sup>−1</sup>, respectively. The Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>)<sub>2</sub> species are produced at low temperature and are identified by a ν(<sup>13</sup>CO<sub>2</sub>) band at 2291 cm<sup>−1</sup>. In the presence of large amounts of water, Ca<sup>2+</sup>(H<sub>2</sub>O)<sub>2</sub>(CO<sub>2</sub>) complexes were also evidenced by ν(<sup>12</sup>CO<sub>2</sub>) and ν(<sup>13</sup>CO<sub>2</sub>) bands at 2348 and 2283 cm<sup>−1</sup>, respectively. The results demonstrate that, although it has a negative effect on CO<sub>2</sub> adsorption uptake, water in moderate amounts does not block CO<sub>2</sub> adsorption sites.https://www.mdpi.com/2079-4991/13/16/2278adsorptioncarbon dioxideCaY zeoliteeffect of water |
| spellingShingle | Nikola L. Drenchev Boris L. Shivachev Lubomir D. Dimitrov Konstantin I. Hadjiivanov Effect of Water on CO<sub>2</sub> Adsorption on CaNaY Zeolite: Formation of Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>), Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>)<sub>2</sub> and Ca<sup>2+</sup>(H<sub>2</sub>O)<sub>2</sub>(CO<sub>2</sub>) Complexes Nanomaterials adsorption carbon dioxide CaY zeolite effect of water |
| title | Effect of Water on CO<sub>2</sub> Adsorption on CaNaY Zeolite: Formation of Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>), Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>)<sub>2</sub> and Ca<sup>2+</sup>(H<sub>2</sub>O)<sub>2</sub>(CO<sub>2</sub>) Complexes |
| title_full | Effect of Water on CO<sub>2</sub> Adsorption on CaNaY Zeolite: Formation of Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>), Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>)<sub>2</sub> and Ca<sup>2+</sup>(H<sub>2</sub>O)<sub>2</sub>(CO<sub>2</sub>) Complexes |
| title_fullStr | Effect of Water on CO<sub>2</sub> Adsorption on CaNaY Zeolite: Formation of Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>), Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>)<sub>2</sub> and Ca<sup>2+</sup>(H<sub>2</sub>O)<sub>2</sub>(CO<sub>2</sub>) Complexes |
| title_full_unstemmed | Effect of Water on CO<sub>2</sub> Adsorption on CaNaY Zeolite: Formation of Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>), Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>)<sub>2</sub> and Ca<sup>2+</sup>(H<sub>2</sub>O)<sub>2</sub>(CO<sub>2</sub>) Complexes |
| title_short | Effect of Water on CO<sub>2</sub> Adsorption on CaNaY Zeolite: Formation of Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>), Ca<sup>2+</sup>(H<sub>2</sub>O)(CO<sub>2</sub>)<sub>2</sub> and Ca<sup>2+</sup>(H<sub>2</sub>O)<sub>2</sub>(CO<sub>2</sub>) Complexes |
| title_sort | effect of water on co sub 2 sub adsorption on canay zeolite formation of ca sup 2 sup h sub 2 sub o co sub 2 sub ca sup 2 sup h sub 2 sub o co sub 2 sub sub 2 sub and ca sup 2 sup h sub 2 sub o sub 2 sub co sub 2 sub complexes |
| topic | adsorption carbon dioxide CaY zeolite effect of water |
| url | https://www.mdpi.com/2079-4991/13/16/2278 |
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