@article { author = {Kazemizadeh, Z. and Bahrami, Z. and Khodadadi, A. and Nazari, F.}, title = {Catalytic Removal of Methane Over Cobalt Chromite (CoCr2O4) Nanospinels for CNG Vehicles}, journal = {International Journal of Nanoscience and Nanotechnology}, volume = {11}, number = {4}, pages = {275-280}, year = {2015}, publisher = {Iranian Nanotechnology Society}, issn = {1735-7004}, eissn = {2423-5911}, doi = {}, abstract = {Cobalt chromite (CoCr2O4) with normal spinel structure, shows catalytic activity for oxidation of unburned methane in the natural gas vehilcles (NGV). In this study, CoCr2O4 nanoparticles were synthesized through a conventional co-precipitation technique and investigated for the catalytic combustion of methane. Cobalt nitrate hexahydrate, chromium nitrate nonahydrate and ammonia solution (25%) were used as the starting materials. The obtained results show that the CoCr2O4 nanospinels were produced as single phase with an average diameter between 25-50 nm.Characterization studies by X- ray diffraction (XRD), N2 adsorption/desorption(BET), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), temperature program oxidation (TPO) and O2- temperature programmed desorption (O2-TPD) were carried out.The specific surface area (SBET) of the synthesized nanoparticles was measured using multiple point Brunauer–Emmett–Teller (BET) method.40 m2.g-1 was obtained for CoCr2O4 nanoparticles. The results revealed that cobalt chromite nanoparticles have significant capability for methane conversion at 435oC. }, keywords = {Cobalt chromite,co-precipitation,Methane conversion,nanoparticles}, url = {https://www.ijnnonline.net/article_17013.html}, eprint = {https://www.ijnnonline.net/article_17013_04158dfb3b5f29750c8b9709d6a59254.pdf} }