Differential heat of absorption of CO_2 in aqueous solutions of N,N-diethylethanolamine(DEEA) and activated DEEA solutions up to a total concentration of 2 mol·L^(-1) was measured as a function of CO_2 loading at...Differential heat of absorption of CO_2 in aqueous solutions of N,N-diethylethanolamine(DEEA) and activated DEEA solutions up to a total concentration of 2 mol·L^(-1) was measured as a function of CO_2 loading at 313.15 K using a reaction calorimeter. In order to analyze the performance of N-methyl-1,3-propanediamine(MAPA)as an activator, DEEA blended solutions containing 0.05, 0.1 and 0.2 mol·L^(-1) MAPA were studied. The heat of CO_2 absorption in single DEEA solutions was unaffected by changing the DEEA concentration in the range of(0.5–2) mol·L^(-1). On the other hand, increasing the concentration of MAPA in aqueous amine mixtures of(DEEA + MAPA) raised the heat of absorption.展开更多
N,N-二甲基-1,3-丙二胺(1)与丙烯酸甲酯经Michael加成反应制得N,N-二甲基-N'-甲氧酰丙基-1,3-丙二胺(2);2经胺基保护、季铵盐化及水解反应合成了一种新型的甜菜碱两性表面活性剂(6),其结构经1H NMR,IR和ESI-MS表征。通过电导率法测...N,N-二甲基-1,3-丙二胺(1)与丙烯酸甲酯经Michael加成反应制得N,N-二甲基-N'-甲氧酰丙基-1,3-丙二胺(2);2经胺基保护、季铵盐化及水解反应合成了一种新型的甜菜碱两性表面活性剂(6),其结构经1H NMR,IR和ESI-MS表征。通过电导率法测得6的CMC为1.48×10-4mol·L-1,滴体积法测得γCMC为39.99 m N·m-1,Krafft点小于0℃。乳化与泡沫性能研究结果表明:6具有较好的表面活性,且乳化性和泡沫性能优良。展开更多
文摘Differential heat of absorption of CO_2 in aqueous solutions of N,N-diethylethanolamine(DEEA) and activated DEEA solutions up to a total concentration of 2 mol·L^(-1) was measured as a function of CO_2 loading at 313.15 K using a reaction calorimeter. In order to analyze the performance of N-methyl-1,3-propanediamine(MAPA)as an activator, DEEA blended solutions containing 0.05, 0.1 and 0.2 mol·L^(-1) MAPA were studied. The heat of CO_2 absorption in single DEEA solutions was unaffected by changing the DEEA concentration in the range of(0.5–2) mol·L^(-1). On the other hand, increasing the concentration of MAPA in aqueous amine mixtures of(DEEA + MAPA) raised the heat of absorption.
文摘N,N-二甲基-1,3-丙二胺(1)与丙烯酸甲酯经Michael加成反应制得N,N-二甲基-N'-甲氧酰丙基-1,3-丙二胺(2);2经胺基保护、季铵盐化及水解反应合成了一种新型的甜菜碱两性表面活性剂(6),其结构经1H NMR,IR和ESI-MS表征。通过电导率法测得6的CMC为1.48×10-4mol·L-1,滴体积法测得γCMC为39.99 m N·m-1,Krafft点小于0℃。乳化与泡沫性能研究结果表明:6具有较好的表面活性,且乳化性和泡沫性能优良。