Abstract: The reduction characteristics of nickel catalysts have been investigated by thermoconductivity-temperature-programmed-reduction (TC-TPR) technique. Results showed that on these catalysts there exist three species of nickel oxide, for which the reduction temperatures were 400-500, 600-650, >750℃ and activation energies were 16.1,28,5, 65.5 kcal/mole, respectively. Their relative contents were markedly affected by preparation method, pretreatment conditions and reoxidation temperatures of the catalysts. Therefore, these species of nickel oxide are mutually convertible according to operating conditions.

摘要： 本文采用热导一程序升温还原法研究镍催化剂的还原性能.观察到在该体系催化剂上存在三种不同形态的氧化镍,其还原温度和还原活化能有着显著的差别.它们的相对含量与催化剂的制备方法、焙烧条件和再氧化温度等有密切的关系.适当改变这些条件,三种不同形态的氧化镍可互相转化.