Journal
FUEL PROCESSING TECHNOLOGY
Volume 229, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.fuproc.2022.107182
Keywords
ODH ethane; NiO; Electrophilic oxygen; Oxalic acid: calcination temperature
Funding
- Ministerio de Ciencia, Innovacion y Universidades in Spain [CRTl2018099668-B-C21, MAT2017-84118-C2-1-R]
- Severo Ochoa Excellence Program [BES-2017-080329]
- Ministry of Higher Education and Scientific Research of Algeria for the National Exceptional Program
Ask authors/readers for more resources
Highly stable and selective bulk NiO catalysts have been synthesized for the oxidative dehydrogenation of ethane to ethylene. The optimal catalyst requires the presence of oxalic acid in the synthesis gel and calcination at low temperatures. The catalytic performance has been explained by the different physicochemical properties and isolation of oxygen species.
Highly stable and selective bulk NiO catalysts have been synthesized for the oxidative dehydrogenation (ODH) of ethane to ethylene. Interestingly, by optimizing synthesis parameters such as the amount of oxalic acid in the synthesis gel and the calcination temperature, undoped NiO catalysts have shown a consistent selectivity to ethylene of ca. 75%. The optimal catalyst requires the presence of a certain amount of oxalic acid in the synthesis gel and a final calcination at low temperatures (i.e. 350 degrees C). These catalysts have been deeply characterized by means of XRD, TPR, HRTEM, Raman and UV-vis diffuse reflectance spectroscopies, XPS and Electrochemical Impedance Spectroscopy measurements and tested in the ethane ODH. A novel electrochemical study has been undertaken, showing the p-character of all the NiO catalysts synthesized but differing in their capacitance values and density of cationic vacancies. The catalytic performance of NiO catalysts has been explained in terms of the different physicochemical properties (including changes in the number of vacancies) of the samples and the isolation of electrophilic oxygen species.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available