荷社稷之重拓探索之渊记国家最高科技奖获得者张存浩院士

2014年1月10日，中共中央、国务院在北京人民大会堂举行2013年度国家科学技术奖励大会。著名物理化学家，中国高能化学激光奠基人、分子反应动力学奠基人之一，中国科学院院士张存浩，荣获2013年度国家最高科学技术奖

荷社稷之重拓探索之渊记国家最高科技奖获得者张存浩院士

2014年1月10日，中共中央、国务院在北京人民大会堂举行2013年度国家科学技术奖励大会。著名物理化学家，中国高能化学激光奠基人、分子反应动力学奠基人之一，中国科学院院士张存浩，荣获2013年度国家最高科学技术奖

Determination of Heat Stable Salts in Amine Solution Used in Desulfurization by Electrodialysis-Ion Exchange Coupled with Ion Chromatography

设计了一种填有强酸型阳离子交换树脂的电渗析离子交换装置,建立了电渗析离子交换-离子色谱检测脱硫胺液中热稳态盐(HSS)的方法,并分析了其工作原理。含有HSS的胺液流经电渗析离子交换装置后,HSS由胺液介质转换为水介质。HSS 的介质转换及离子交换树脂的再生过程连续进行。电渗析离子交换的较佳实验条件:胺液流量1．0mL／min,电流100mA,胺液循环次数4次,无机阴离子的洗脱液为3．5mmoL／LNa2CO3+1．0mmoL／L NaHCO3,有机阴离子的洗脱液为0．5mmol／LNa2CO3+ 0．5 mmoL／L NaHCO3。在此条件下分析实际试样,得到Cl-,SO42-,HCOO-,CH3COO-,CH3CH2COO-的检测限分别为0．005, 0．020,0．010,0．050,0．080mg／L,加标回收率为81．0％-113．0％。该方法只用水无需采用化学试剂,且简单、快速、灵敏、准确。Novel method for determination of heat stable salts(HSS) in amine solution,used in desulfurization of natural gas and refinery gas,was developed by electrodialysis-ion exchange coupled with ion chromatography. An electrodialyzer packed with strong acidic cation-exchange resin was designed and established. Amine solution containing HSS and methyldiethanolamine (MDEA) flowed through the device, in which MDEA was reserved on the resin after exchanging with hydronium ions on the strong acidic cation-exchange resin. HSS whose medium was converted from MDEA to hydrous phase could be determined by ion chromatography. Conversion of medium and regeneration of ionexchange resins could be continuously carried out without interruption. Under optimal conditions for electrodialysis-ion exchange:flowrate of amine solution 1.0 mL/min, electric current 100 mA,cycle times of amine solution 4,eluent for inorganic anions 3. 5 mmol/L Na2CO3 +1.0 mmol/L NaHCO3 and eluent for organic anions 0.5 mmol/L Na2CO3 +0. 5 mmol/L NaHCO3,detection limits for Cl-, SO42-,HCOO-,CH3COO- and CH3CH2COO- were 0. 005,0. 02,0. 010,0. 050 and 0. 080 mg/L, respectively. Recovery of method was 81.0% -113.0%. The method needed no chemical reagent and was simple,fast,sensitive and precise.国家自然科学基金资助项目(20527005)