Molybdate

Chemisorption

Catalysis

Adsorption

Engineering

Metallurgy

Materials science

Inorganic chemistry

Chemical engineering

Physical chemistry

Autoxidation

Thermodynamics

Physics

Organic chemistry

Oxygen

Hydrodesulfurization

Isothermal process

Chemistry

Hydrocarbon

Nickel

Coke

Fuel

Chemisorption of oxygen by nickel molybdate catalyst used for hydrotreating heavy oils was shown to increase with increasing temperature and reached a maximum at about 270 °C. Yields of CO2, CO and SO2 formed during isothermal Chemisorption were estimated by using a fixed-bed reactor. Experimental observations were interpreted in terms of a hydrocarbon autoxidation mechanism.

Chemisorption of oxygen by coke deposited on catalyst surface