摘要
本文研究了HPMBP与N_(1923)的氯仿溶液从硝酸介质中协萃钯(Ⅱ)的热力学过程。通过考察协萃体系浓度和温度对钯(Ⅱ)分配比的影响,测得了协萃反应的平衡常数K、焓变△H、自由能曼△G和熵变△S。
Thermodynamic studies were conducted on the synergistic extraction of Pd (Ⅱ) from HNO_3 medium by HPMBP and primary amine N1923. By investigating the influence of temperature and concentrations of HPMBP and N1923 upon the distribution ratios, D's, of pd (Ⅱ) , it is established that at 30℃ and pH of 1.57 we have:lgD=3.0371g[HPMBP]_((o))+6.461, lgD=0.99361g[RNH_3NO_3]_((o))+3.0066, and that at the same temperature and for the initial concentrations of HPMBP+RNH_3NO_3 of 1×10^(-2)mol·1^- the following relationship exists between lgD and 1/T: lgD=-1653.57/T+4.8735.The thermodynamic functions at 30℃ were measured as follows: K=56.23; H=-31.278kJ·mol^(-1); G=-10.150kJ·mol^(-1); S=69.729J·mol^(-1)·K^(-1)
出处
《矿冶工程》
CAS
CSCD
北大核心
1990年第4期37-40,共4页
Mining and Metallurgical Engineering
关键词
钯(Ⅱ)
N1923
HPMBP
协萃热力学
Synergistic extraction, Palladium,HPMBP, Primary amine N_(1923), Thermodynamic function
