(n-C_(18)H_(37)NH_3)_2MCl_4热容的测定  

MEASUREMENT OF CAPACITIES FOR (n-C_(18)H_(37)NH_3)_2MCl_4

作　　者：徐瑞云 孔德俊[2] 蔡显鄂[2] 朱京[2] 

机构地区：[1]上海化工高等专科学校,上海200233 [2]复旦大学化学系,上海200433

出　　处：《物理化学学报》1993年第6期802-807,共6页Acta Physico-Chimica Sinica

摘　　要：在差示扫描量热仪(DSC 仪)上,采用扫描热焓法测定物质的热容,实验精度达到±1%左右.在190-410K 温度区间内,测定了四氯合金属酸(Ⅱ)正十八铵(n-C_(18)H_(37)NH_3)_2MCl_4(M=Mn和Zn;简称C_(18)M)的热容.同时测定了C_(18)M 的固-固相变焓和相变熵.本文报导了C_(18)M 每隔5K 的热力学函数.The heat capacities of samples were measured by Differential Scanning Calorimetry(DSC),us-ing scanning enthalpy method.The accuracy of the heat capacity measurements was appoximately1 per cent by the method.The heat capacities of bis(n-octadecylammonium)tetrachlorometal-iates (Ⅱ),(n-C_(18)H_(37)NH_3)_2MCl_4(M=Mn,Zn;short notation C_(18)M),were measured from 190 to410K.The enthalpies and entropies of the solid-solid phase transitions for C_(18)M were calculated.The selected thermodynamic functions were given at intervals of 5K from 190 to 410K.

关 键 词：热容 四氯合金属酸 正十八铵 

分 类 号：O613.61[理学—无机化学]