Patent ID: 9480974
Filing Date: 2016-11-01
CPC Classification: B01J,C01B,Y02P

Claim Text:
1. A process for the preparation of a Nano Ni—CeO 2 catalyst having a formula NiO—CeO 2 that comprises NiO in the range of 2.5-10 wt % and CeO 2 in the range 97.5-90 wt %, wherein 2-5 nm Ni nanoparticles are present on 30-40 nm CeO 2 nanoparticles, said process comprising the steps of; a) precipitating Ce(NO b) maintaining the pH of the mixture between 7-10 and stirring the mixture for a period of 1-2 h at room temperature ranging between 30-40° C., c) heating the resultant solution at a temperature range of 80-90° C. for a period of 3-5 hrs to obtain a thick mixture substance, d) evaporating the thick mixture substance to dryness at a temperature range of 90-100° C. for a period of 15-20 hrs to obtain solid; e) calcining the solid obtained as obtained in step (d) at a temperature range of 450-650° C. for a time period in the range of 4-8 hours to obtain Ce oxide; f) adding dropwise Ni(NO g) adding Ni salt solution as obtained in step (f) with CeO h) drying the mixture of step g) at temperature ranging between 60-90° C. for a period ranging between15-20 hrs. followed by calcining at a temperature ranging between 450-650 ° C. for a time period ranging between 3-10 hrs. to obtain Nano Ni—Ce oxide catalyst.