树脂DX吸附ADN的热力学和动力学研究
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摘要
通过在不同温度下的静态吸附实验,研究了二硝酰胺铵(ADN)在树脂DX上的吸附热力学及动力学特性;通过实验测定了28~50℃的等温吸附线和吸附动力学数据,并分别用Langmuir和Freundlich模型对实验数据进行了拟合。结果表明,树脂DX对水溶液中ADN的吸附符合Freundlich等温吸附方程,该吸附过程的吉布斯自由能变(ΔG)<0,熵变(ΔS)>0,吸附过程可自发进行,不同吸附量下的吸附焓变(ΔH)>0,吸附为吸热过程;树脂DX对ADN的吸附属于快速平衡型,前30min大量ADN被吸附在树脂DX上,60min后吸附趋于平衡,吸附过程符合拟二级动力学方程;该吸附工艺操作简便,树脂DX吸附效率高,可重复利用,成本低。
Thermodynamic and kinetic characteristics of the adsorption of ammonium dinilramide(ADN)on resin DX were studied through static adsorption experiments at different temperatures.The adsorption isotherms and adsorption kinetic data at 28-50℃ were measured by experiments and the experimental data were fitted by Langmuir and Freundlich models,respectively.The results show that the adsorption of ADN in the aqueous solution by resin DX is in accordance with the Freundlich isothermal adsorption equation,and the Gibbs free energy change(ΔG)<0 and enthalpy change(ΔS)> 0 of the adsorption process indicate that the adsorption process can be carried out spontaneously.The adsorption ofΔH> 0 under different adsorption quantity indicates that the adsorption is an endothermic process.The adsorption of resin DX on ADN belongs to the fast equilibrium type.A large amount of ADN is adsorbed on resin DX in the first 30 minutes.After 60 minutes,the adsorption tends to balance,and the adsorption process conforms to the quasi-second-order kinetic equation.The adsorption process is simple and convenient to operate,the resin DX,with low cost,has high adsorption efficiency and can be reused.
Thermodynamic and kinetic characteristics of the adsorption of ammonium dinilramide(ADN)on resin DX were studied through static adsorption experiments at different temperatures.The adsorption isotherms and adsorption kinetic data at 28-50℃ were measured by experiments and the experimental data were fitted by Langmuir and Freundlich models,respectively.The results show that the adsorption of ADN in the aqueous solution by resin DX is in accordance with the Freundlich isothermal adsorption equation,and the Gibbs free energy change(ΔG)<0 and enthalpy change(ΔS)> 0 of the adsorption process indicate that the adsorption process can be carried out spontaneously.The adsorption ofΔH> 0 under different adsorption quantity indicates that the adsorption is an endothermic process.The adsorption of resin DX on ADN belongs to the fast equilibrium type.A large amount of ADN is adsorbed on resin DX in the first 30 minutes.After 60 minutes,the adsorption tends to balance,and the adsorption process conforms to the quasi-second-order kinetic equation.The adsorption process is simple and convenient to operate,the resin DX,with low cost,has high adsorption efficiency and can be reused.
引文
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[2]彭翠枝,郑斌,张培,等.国外二硝酰胺铵的发展现状[J].火炸药学报,2014,37(3):1-5.PENG Cui-zhi,ZHENG Bin,ZHANG Pei,et al.Current situation of foreign ammonium dinitramide development[J].Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),2014,37(3):1-5.
[3]张志忠,姬月萍,王伯周,等.二硝酰胺铵在火炸药中的应用[J].火炸药学报,2004,27(3):36-41.ZHANG Zhi-zhong,JI Yue-ping,WANG Bo-zhou,et al.Application of ammunium dinitramide in propellants and explosives[J].Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),2004,27(3):36-41.
[4]Stenmark H,Skifs H.Environmental improvements in the dinitramide production process[C]∥The 41st International Annual Conference of ICT.Karlsruhe:ICT,2010.
[5]刘波,刘少武,于慧芳,等.二硝酰胺铵防吸湿技术研究进展[J].化学推进剂与高分子材料,2011,9(6):57-60.LIU Bo,LIU Shao-wu,YU Hui-fang,et al.Research progress in anti-hygroscopicity of ammonium dinitramide[J].Chemical Propellants&Polymeric Materials,2011,9(6):57-60.
[6]王婧娜,胡岚,张皋,等.球形ADN的吸湿机理[J].火炸药学报,2014,37(1):86-90.WANG Jing-na,HU Lan,ZHANG Gao,et al.Hygroscopic mechanism of spherical AND[J].Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),2014,37(1):86-90.
[7]刘愆,王伯周,张海昊,等.ADN无机法合成及分离纯化研究[J].含能材料,2006,14(5):358-360.LIU Qian,WANG Bo-zhou,ZHANG Hai-hao,et al.Inorganic synthesis of ADN and its separation and purification[J].Chinese Journal of Energetic Materials,2006,14(5):358-360.
[8]刘海洲,许华新,李宁,等.混酸法合成的分离纯化工艺研究[J].化学推进剂与高分子材料,2009,7(5):47-49.LIU Hai-zhou,XU Hua-xin,LI Ning,et al.Separation and purification of ADN synthesized by mixed acid method[J].Chemical Propellants&Polymeric Materials,2009,7(5):47-49.
[9]潘永飞,刘卫孝,赵欣,等.活性炭吸附法分离纯化ADN[J].火炸药学报,2017,40(4):61-65.PAN Yong-fei,LIU Wei-xiao,ZHAO Xin,et al.Separation and purification of ADN by activated carbon adsorption[J].Chinese Journal of Explosives&Propellants(Huozhayao Xuebao),2017,40(4):61-65.
[10]冯自立,刘金生,李旭午.D-101大孔树脂吸附薯蓣水溶性皂苷的热力学和动力学分析[J].广东化工,2012,39(10):10-11.FENG Zi-li,LIU Jin-sheng,LI Xu-wu.Study on the adsorption thermodynamics and kinetics of water soluble saponins from the dioscorea zingiberensis on D-101resin[J].Guangdong Chemical Industry,2012,39(10):10-11.
[11]陈飞雄,李国鹏,周彩荣,等.树脂DXM吸附草甘膦的热力学及动力学[J].北京理工大学学报,2012,32(6):650-654.CHEN Fei-xiong,LI Guo-peng,ZHOU Cai-rong,et al.Adsorbing thermodynamics and kinetics of resin DXM to glyphosate solution[J].Transactions of Beijing Institute Technology,2012,32(6):650-654.
[12]田思思,王霞,王浩绮,等.阴离子交换树脂对茶氨酸的吸附动力学和热力学[J].过程工程学报,2012,12(4):648-653.TIAN Si-si,WANG Xia,WANG Hao-qi,et al.Adsorption kinetics and thermodynamics of theanine onto anion exchange resins[J].The Chinese Journal of Process Engineering,2012,12(4):648-653.
[13]何炳林,黄文强.离子交换与吸附树脂[M].上海:上海科技教育出版社,1995:174.
[14]宋应华,许惠,陈盛明.原花青素在HZ818树脂上的吸附热力学和动力学[J].化学工程,2014,42(6):1-4.SONG Ying-hua,XU Hui,CHEN Sheng-ming.Adsorbtion thermodynamics and kinetics of proanthocyanidins on HZ818[J].Chemical Engineering,2014,42(6):1-4.
[15]张媛,康龙丽,金天博,等.西藏雪莲总黄酮在大孔吸附树脂上的吸附动力学和热力学研究[J].离子交换与吸附,2016,32(4):358-367.ZHANG Yuan,KANG Long-li,JIN Tian-bo,et al.Adsorption kinetics and thermodynamics of total flavonoids from saussurea involucrata adsorbed on macroporous adsorption resin[J].Ion Exchange and Adsorption,2016,32(4):358-367.
[16]孙蕾蕾,马丽娜,渠飞翔,等.楂汁中总酸和黄酮在D941树脂上的吸附动力学和热力学[J].离子交换与吸附,2013,29(3):228-235.SUN Lei-lei,MA Li-na,QU Fei-xiang,et al.Kinetics and thermodynamics adsorption of total acid and flavonoids in hawthorn fruit juice onto D941resin[J].Ion Exchange and Adsorption,2013,29(3):228-235.
[17]刘哲,张越非,池汝安.HPD-100大孔树脂吸附葛根异黄酮的热力学和动力学[J].武汉工程大学学报,2015,37(4):18-22.LIU Zhe,ZHANG Yue-fei,CHI Ru-an.Adsorbtion kinetics and thermodynamics of pueraia isoflavonoids on HPD-100macroporous resin[J].Journal of Wuhan Institute Technology,2015,37(4):18-22.