Carbon Dioxide Capture Using Ionic Liquids Containing Amino Acid-Type Anions. Effect of the Cation, Anion on the Absorption Efficiency

IF 1.1 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Mexican Chemical Society Pub Date : 2024-01-01 DOI:10.29356/jmcs.v68i1.1827

Rafael Martinez-Palou, Gabriela Barbosa Guevara, Nohra Violeta Gallardo Rivas

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Abstract

Abstract. In this work, the synthesis of twelve ionic liquids (ILs) with imidazolium cation and amino acid-derived anions and their evaluation as carbon dioxide (CO2) absorbents both, in pure form and aqueous solution (30 % of water) are reported and compared with monoetanolamine (MEA), which is a well-known commercial absorbent with wide application in the Petroleum Industry for capturing acid gases. The effect of both cation substituent features such as length and unsaturation of alkyl chains and amino acid structure at the anion on the CO2 absorption efficiency was studied. All the ILs displayed good CO2 absorption efficiency, being the ILs derived from 1-octyl-3-vinylimidazolium the most effective for this purpose, especially with lysinate anion ([OVI][L]); a capture rate of 1501 mg CO2/mol of IL was achieved when it was diluted in water (30 %). Resumen. En este trabajo se reporta la síntesis de doce líquidos iónicos (LIs) con el catión imidazolio y los aniones derivados de aminoácidos y la evaluación de estos compuestos como absorbentes de dióxido de carbono (CO2), tanto empleando los absorbentes puros, como en solución acuosa (30 % de agua). Los resultados se comparan con los obtenidos con monoetanolamina (MEA), que es un conocido absorbente comercial con amplia aplicación en la Industria del Petróleo en la captura de gases ácidos. Se estudió el efecto de las características de ambos N-sustituyentes de los cationes, como la longitud y la presencia de insaturación en las cadenas de alquilo y la estructura de aminoácidos que conforman los aniones de los LIs estudiados, en la eficiencia de absorción de CO2. Todos los LIs mostraron una buena eficiencia de absorción de CO2, siendo los LIs derivados del 1-octil-3-vinilimidazolio los más efectivos para este fin, especialmente con el anión lisinato ([OVI][L]); se logró una tasa de captura de 1501 mg CO2/mol de LIs cuando el absorbente se diluyó en agua (30 %).

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使用含氨基酸型阴离子的离子液体捕获二氧化碳。阳离子和阴离子对吸收效率的影响

摘要本研究报告了 12 种具有咪唑阳离子和氨基酸衍生阴离子的离子液体（ILs）的合成及其作为二氧化碳（CO2）吸收剂（纯液和水溶液（30% 的水））的评估，并将其与单乙醇胺（MEA）进行了比较，后者是一种著名的商业吸收剂，在石油工业中广泛用于捕获酸性气体。研究了阳离子取代基（如烷基链的长度和不饱和度）和阴离子的氨基酸结构对二氧化碳吸收效率的影响。所有 IL 都显示出良好的二氧化碳吸收效率，其中以 1-辛基-3-乙烯基咪唑鎓衍生的 IL 最为有效，尤其是赖氨酸阴离子（[OVI][L]）；将其稀释在水中（30%）时，其捕获率达到 1501 毫克二氧化碳/摩尔 IL。总结。在这项工作中，我们报告了 12 种含有咪唑阳离子和氨基酸衍生阴离子的离子液体 (IL) 的合成过程，并对这些化合物作为二氧化碳 (CO2) 吸收剂进行了评估，包括使用纯吸收剂和在水溶液（30% 水）中进行评估。研究结果与一乙醇胺（MEA）的结果进行了比较，一乙醇胺是一种著名的商业吸收剂，广泛应用于石油工业的酸性气体捕集。研究了阳离子 N-取代基的特性（如烷基链的长度和不饱和度）和形成所研究 IL 阴离子的氨基酸结构对二氧化碳吸附效率的影响。所有 ILs 都表现出良好的二氧化碳吸附效率，其中 1-辛基-3-乙烯基咪唑衍生的 ILs 在这方面最为有效，尤其是赖氨酸阴离子（[OVI][L]）；当吸附剂在水中稀释（30%）时，ILs 的捕集率达到 1501 毫克 CO2/摩尔。

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来源期刊

Journal of the Mexican Chemical Society 化学-化学综合

CiteScore

2.00

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The Journal of the Mexican Chemical Society (J. Mex. Chem. Soc.) is a scientific, blind, peer reviewed, and open access, free of charge publication that covers all areas of chemistry and its sub-disciplines (i.e. medicinal chemistry, natural products, electrochemistry, material science, computational chemistry, organic chemistry, bionirganic chemistry, etc). It is devoted to facilitating the worldwide advancement of our understanding of chemistry. It will primarily publish original contributions of research in all branches of the theory and practice of chemistry in its broadest context as well as critical reviews in active areas of chemical research where the author has published significant contribution. The J. Mex. Chem. Soc. is a quarterly publication which language of submission and publication is English. To be suitable for publication in J. Mex. Chem. Soc., manuscripts must describe novel aspects of chemistry, high quality of results and discussion an excellent bibliographic support, and contribute to the development of the field. Routine or incremental work are not suitable for publication in J. Mex. Chem. Soc. Authors are encouraged to send contributions in electronic form. Our online submission system guides you stepwise through the process of entering your article details and uploading your files.