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المؤلفMahmud, Nafis
المؤلفBenamor, Abdelbaki
المؤلفNasser, Mustafa S.
المؤلفBa-Abbad, Muneer M.
المؤلفEl-Naas, Muftah H.
المؤلفQiblawey, Hazim
تاريخ الإتاحة2022-09-29T06:48:42Z
تاريخ النشر2020
اسم المنشورInternational Journal of Energy Research
المصدرScopus
معرّف المصادر الموحدhttp://dx.doi.org/10.1002/er.5522
معرّف المصادر الموحدhttp://hdl.handle.net/10576/34633
الملخصIn the present study, the reaction kinetics of carbon dioxide (CO2) with two blends of N-methyldiethanolamine; potassium salts of taurine and potassium salts of glycine were investigated. The experiments were performed using a stopped flow apparatus over a range of temperature varying from 293 to 313 K. The concentration of solution was varied from 0.2 to 0.8M in different proportions of potassium salts of taurine and glycine. For both cases, the overall reaction rate constant (kov) increased with increased temperature and amino acid salts proportions in the blends. Results also indicated that addition amino acid salts (AAS) could improve the overall reaction rate of methyldiethanolamine (MDEA) with CO2 by more than 100 times. The kinetics data were interpreted using the widely accepted mechanisms namely; zwitterion and termolecular mechanisms. An average absolute deviation of 8.8% was observed for both mechanisms applied to MDEA-KTau blend, while an AAD% of 7.4 and 7.2 were observed for the case of MDEA-KGly system when applying the zwitterion and termolecular mechanisms, respectively. The results showed that blends of MDEA and potassium salts amino acids react faster with CO2 compared to conventional amine systems. Hence, the use of both potassium salts of taurine and glycine as rate promotors can significantly enhance the reactivity of MDEA toward CO2.
راعي المشروعThe authors would like to acknowledge the QNRF (a member of Qatar foundation) for providing the NPRP Grant # 7?1154?2?433 that made this paper possible. The statements made herein are solely the responsibility of the authors.
اللغةen
الناشرJohn Wiley and Sons Ltd
الموضوعblends
carbon dioxide
methyldiethanolamine
potassium glycinate
potassium taurinate
reaction kinetics
العنوانChemical kinetics of carbon dioxide in the blends of different amino acid salts and methyldiethanolamine
النوعArticle
الصفحات12506-12524
رقم العدد15
رقم المجلد44
dc.accessType Abstract Only


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