| Ni-based nano hydrogenation catalyst was prepared by precipitation with nano calcium carbonate as carrier,and its activity was characterized by the hydrogenation of palm oil. The effects of preparation method, loading amount, calcination temperature, reduction temperature and promoter on the activity of catalyst were investigated. The results showed that under the conditions of loading amount of Ni approximately 30%, Al(molar ratio of Ni to AL 6∶1) or Co(molar ratio of Ni to Co 600∶1) added as promoter, calcination temperature 350℃, reduction temperature 400℃ with nano calcium carbonate as carrier, the catalyst prepared by precipitation had the highest activity with the iodine value of hydrogenated palm oil falling to below 0.5 gI/100 g (catalyst dosage was accounted for 0.07% of palm oil mass), which indicated that the catalytic performance of the catalyst could meet the industrial requirements. In addition, the preparation method was simple with relatively cheaper nano calcium carbonate as carrier and Ni as main active component, and the catalyst prepared had good application prospect with steady performance,higher activity and good economic benefit. |
