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.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1993年第6期802-807,共6页
Acta Physico-Chimica Sinica
关键词
热容
四氯合金属酸
正十八铵
Scanning enthalpy method
heat capacity
Solid-solid phase transition enthalpy
Bis(n-octadecylammonium)tetrachloro-metallates(Ⅱ)
