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A Novel Carbon Dioxide Desorption Phenomena using Potassium Acetate Aqueous Solution 醋酸钾水溶液解吸二氧化碳的新现象
Universal Journal of Green Chemistry Pub Date : 2023-05-08 DOI: 10.37256/ujgc.1120232166
Jian-Sheng Shen, C. Wang, Chuh‐Yung Chen, Chen-Yang Lin
{"title":"A Novel Carbon Dioxide Desorption Phenomena using Potassium Acetate Aqueous Solution","authors":"Jian-Sheng Shen, C. Wang, Chuh‐Yung Chen, Chen-Yang Lin","doi":"10.37256/ujgc.1120232166","DOIUrl":"https://doi.org/10.37256/ujgc.1120232166","url":null,"abstract":"A novel CO2 absorbent, 50–75 wt.% aqueous potassium acetate solution (AcK(aq)), which showed a CO2 absorption capacity of ~ 0.2 mol CO2/mol, and could almost immediately completely desorb CO2 on addition of 40 wt.% H2O at 30 ℃ was investigated. This novel phenomenon seemed contrary to the Le Chatelier's principle because H2O is reactant in this system. After characteristics of products by FTIR and XRD diffraction pattern, the novel desorption behavior was attributed to the acid-base reaction between KH(CH3COO)2 and KHCO3 precipitates within the absorbent sludge. As H2O was added, both compounds re-dissolved and CO2 was released. A similar observation was made when the absorbent sludge was heated to temperatures above 60 ℃, owing to an increase in solubility with temperature. The mechanism of CO2 captured and released by AcK(aq) was proposed in this study. This novel energy-saving CO2 absorption and desorption behavior reveals that AcK(aq) has a high potential for application in the commercial production process.","PeriodicalId":150757,"journal":{"name":"Universal Journal of Green Chemistry","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121234330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent Topics of Laccase Focused on Chemical Reactions and Applications 漆酶的最新研究主题:化学反应及其应用
Universal Journal of Green Chemistry Pub Date : 2022-11-30 DOI: 10.37256/ujgc.1120231901
T. Akitsu, Daisuke Nakane
{"title":"Recent Topics of Laccase Focused on Chemical Reactions and Applications","authors":"T. Akitsu, Daisuke Nakane","doi":"10.37256/ujgc.1120231901","DOIUrl":"https://doi.org/10.37256/ujgc.1120231901","url":null,"abstract":"Green chemistry elements should deal with enzymatic chemical reactions that are efficient or have a low environmental impact. Laccase is a readily available multicopper oxidase that has been extensively studied for a long time. In reviewing recent trends in laccase research, the authors selected themes that have not yet been evaluated, targeting open-access journals. From a chemical viewpoint, decomposition reactions (such as oxidation of substrates, toxic substances, pigments, and biomass materials), organic synthesis reactions, composite catalytic activities of oxygen reduction reactions, biosensors, batteries, biological fields, fermentation, culture, gene association, and antifungal activity.","PeriodicalId":150757,"journal":{"name":"Universal Journal of Green Chemistry","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132112791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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