Adsorption and Oxidation Investigations over Pt/Al2O3 Catalyst: A Microcalorimetric Study

Catalysts

Louise Olsson¹  Oana Mihai¹  Derek Creaser¹ 

[1] Chemical Reaction Engineering and Competence Centre for Catalysis, Chalmers University of Technology, Göteborg SE-412 96, Sweden;

关键词: microcalorimetry;    adsorption heat;    Pt/Al2O3;    NO;    NO2 oxidation;    Pt dispersion;   

DOI  :  10.3390/catal6050073

来源: DOAJ

【 摘 要 】

The differential adsorption heats of oxygen and NO, as well as catalytic oxidation behavior during NO oxidation and NO2 dissociation reactions over supported Pt-catalysts, were investigated by microcalorimetric measurements. The average heat of adsorption (∆H) of oxygen ranged from 310 kJ/mol at 200 °C to 289 kJ/mol at 400 °C. Over this temperature range formation of platinum oxides and coverage dependence caused variations in the apparent heat of adsorption. NO heat of adsorption from 50 to 150 °C was near constant with an average value of 202 kJ/mol over the temperature range.

【 授权许可】

Unknown