差示扫描量热法(DSC)测定金属物质的热容

热容是金属材料的一个重要物理量,在此介绍一种用DSC测定热容的方法.以锌粉为样品,测定了不同温度下的热容,回归出了热容与温度的关系,并用积分法对实验温度范围内热容实验曲线和理论曲线之间的符合程度进行了比较.     

Nonzero Solubility Rule

Solubility of chemicals in a solvent is an importantconcept for college students.Almost withoutexception,textbooks dealing with generalchemistry all contain discussions of solubility anddifferentsolubility rules such as the“like dissolveslike” rule,and …     

Energy Saving and Pollution Reducing Effects of Coal Combustion Catalysts

IntroductionCoal has been the main energy supply throughoutmodern China history and will remain so for atleast another fifty years. Although efforts havebeen made to convert coal to non- solid fuels suchas alcohol- based fuels,coal is still used primarilyfor direct combustion in China and many othercountries,but two main problems remainunsolved. The first problem concerns thecombustion efficiency and the generation of avariety of gaseous pollutants. At present about85% of the airpollutants in…