M. Teodorescu et al., INVESTIGATION CONCERNING BIMETALLIC CATALYSTS USING NONISOTHERMAL (TEMPERATURE-PROGRAMMED REDUCTION (TPR) AND TEMPERATURE-PROGRAMMED DESORPTION (TPD)) AND ISOTHERMAL METHODS .2. NICKEL-CHROMIUM PREREDUCED CATALYSTS, Thermochimica acta, 240, 1994, pp. 199-205
In a previous paper (Thermochim. Acta, 233 (1994) 317) the authors pre
sented their results concerning TPR, TPD and pulse hydrogen adsorption
on a Ni-Cr catalyst calcined at 640-degrees-C without previous reduct
ion (sample A640). This paper deals with the influence of prereduction
of the same catalyst on TPR and TPD heating cycle records (HCR) and a
lso on pulse hydrogen adsorption even if these catalysts had been kept
in air atmosphere for six months. Our results show that the influence
of prereduction is preserved.