Abstract
We studied the effect of calcination temperature of Ni/Al2O3 and Ni–Ce/Al2O3 catalysts on the specific surface area, acidity, ratio of pore volume and specific surface area, reducibility reflecting the changing population of Ni(Td) and Ni(Oh) species, and activity/selectivity in oxidative dehydrogenation of ethane. It should be stressed that the role of Ce as a promoter on the catalytic activity of Ni–Ce/Al2O3 catalysts decreased with an increasing value of the calcination temperature. At a reaction temperature of 500 °C, the highest productivity to ethene was observed for the Ni–Ce/Al2O3 catalyst calcined at 500 °C. Ni–Ce/Al2O3 catalysts calcined at 500–750 °C showed the same selectivity to ethene. The Ni–Ce/Al2O3 catalysts calcined at 900 and 1000 °C showed a sharp decrease in the selectivity and the activity, which was probably associated with the formation of NiAl2O4 spinel.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
