吗啉的CO_2吸收及核磁共振波谱实验研究
|
摘要
吗啉(MOR)是一种环状胺,具有作为CO_2吸收剂的潜力.本研究对吗啉溶液进行CO_2吸收实验和核磁共振(NMR)波谱实验,通过吸收容量及不同CO_2担载下NMR图像的变化规律,反映MOR-CO_2-H2O系统化学反应的变化趋势,评价MOR溶液的吸收表现.吸收实验结果表明MOR的吸收容量为0.48 molCO_2/mol胺,与5 MMEA的结果接近.定量NMR实验结果反映了各组分峰的化学位移及变化规律.定量13CNMR实验结果表明系统各组分的摩尔分数变化规律符合反应机理假设.
Morpholine(MOR) is a cyclic amine with potential use as a CO_2 absorbent. In this study,MOR solution was subjected to CO_2 absorption and nuclear magnetic resonance(NMR)spectroscopy experiments. The systemic MOR-CO_2-H2 O chemical reactions and absorption performance of the solution were observed in terms of absorption capacity and variations in NMR images under different CO_2 loadings. The results of absorption experiments showed that the absorption capacity of MOR was 0.48 mol CO_2/mol amine,which was similar to that of 5 M MEA. Qualitative NMR results reflected the chemical shifts and changes in the peaks of each component. The results of quantitative 13 C NMR experiments showed that the molar fraction of each component of the system was in accordance with the assumptions of the related reaction mechanism.
Morpholine(MOR) is a cyclic amine with potential use as a CO_2 absorbent. In this study,MOR solution was subjected to CO_2 absorption and nuclear magnetic resonance(NMR)spectroscopy experiments. The systemic MOR-CO_2-H2 O chemical reactions and absorption performance of the solution were observed in terms of absorption capacity and variations in NMR images under different CO_2 loadings. The results of absorption experiments showed that the absorption capacity of MOR was 0.48 mol CO_2/mol amine,which was similar to that of 5 M MEA. Qualitative NMR results reflected the chemical shifts and changes in the peaks of each component. The results of quantitative 13 C NMR experiments showed that the molar fraction of each component of the system was in accordance with the assumptions of the related reaction mechanism.
引文
[1]Jaud P,Bonnivard R G,Kanniche M,et al.Technicoeconomic Feasibility Study of CO2 Capture,Transport and Geo-sequestration:A Case Study for France[R].France:Peer Reviewed Papers,2004.
[2]Ciferno J P,Di Pietro P,Tarka T.An Economic Scoping Study for CO2 Capture Using Aqueous Ammonia[R].DOE/NETL Report,2005-2.
[3]魏思雨,韩瑞,苏彦麟,等.介孔骨架包裹纳米碳酸钙循环吸收CO2性能研究[J].燃烧科学与技术,2018,24(2):132-138.Wei Siyu,Han Rui,Su Yanlin,et al.CO2 sorption enhancement of nano calcium carbonate wrapped with the mesoporous skeleton[J].Journal of Combustion Science and Technology,2018,24(2):132-138(in Chinese).
[4]Rochelle G,Chen E,Freeman S,et al,Aqueous piperazine as the new standard for CO2 capture technology[J].Chem Eng J,2011,171,725-733.
[5]Muhammad A,Mutalib M I A,Murugesan T,et al.Thermophysical properties of aqueous piperazine and aqueous(n-methyldiethanolamine plus piperazine)solutions at temperatures(298.15 to 338.15)K[J].J Chem Eng Data,2009,54:2317-2321.
[6]Matin N-S,Remies J E,Neathery J K,et al.The equilibrium solubility of carbon dioxide in aqueous solutions of morpholine:Experimental data and thermodynamic modeling[J].Ind Eng Chem Res,2013,52:5221-5229.
[7]da Silva E F,Svendsen H F.Computational chemistry study of reactions,equilibrium and kinetics of chemical CO2 absorption[J].International Journal of Greenhouse Gas Control,2007,1(2),151-157.
[8]徐志成.1,4-丁二胺/N,N-二乙基乙醇胺体系吸收二氧化碳的研究[D].北京:清华大学能源与动力工程系,2014.Xu Zhicheng.CO2 Absorption with Aqueous BDA/DEEA Blended System[D].Beijing:Department of Energy and Power Engineering,Tsinghua University,2014(in Chinese).
[2]Ciferno J P,Di Pietro P,Tarka T.An Economic Scoping Study for CO2 Capture Using Aqueous Ammonia[R].DOE/NETL Report,2005-2.
[3]魏思雨,韩瑞,苏彦麟,等.介孔骨架包裹纳米碳酸钙循环吸收CO2性能研究[J].燃烧科学与技术,2018,24(2):132-138.Wei Siyu,Han Rui,Su Yanlin,et al.CO2 sorption enhancement of nano calcium carbonate wrapped with the mesoporous skeleton[J].Journal of Combustion Science and Technology,2018,24(2):132-138(in Chinese).
[4]Rochelle G,Chen E,Freeman S,et al,Aqueous piperazine as the new standard for CO2 capture technology[J].Chem Eng J,2011,171,725-733.
[5]Muhammad A,Mutalib M I A,Murugesan T,et al.Thermophysical properties of aqueous piperazine and aqueous(n-methyldiethanolamine plus piperazine)solutions at temperatures(298.15 to 338.15)K[J].J Chem Eng Data,2009,54:2317-2321.
[6]Matin N-S,Remies J E,Neathery J K,et al.The equilibrium solubility of carbon dioxide in aqueous solutions of morpholine:Experimental data and thermodynamic modeling[J].Ind Eng Chem Res,2013,52:5221-5229.
[7]da Silva E F,Svendsen H F.Computational chemistry study of reactions,equilibrium and kinetics of chemical CO2 absorption[J].International Journal of Greenhouse Gas Control,2007,1(2),151-157.
[8]徐志成.1,4-丁二胺/N,N-二乙基乙醇胺体系吸收二氧化碳的研究[D].北京:清华大学能源与动力工程系,2014.Xu Zhicheng.CO2 Absorption with Aqueous BDA/DEEA Blended System[D].Beijing:Department of Energy and Power Engineering,Tsinghua University,2014(in Chinese).
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |