Preparation Of Nickel Supported On Sphere Active Carbon And It's Catalytic Performance

The sphere active carbon is a kind of new upscale product that receives people's attention more and more. It has been attached many merits as a new type active carbon with the good sphere activity, the even loading density, the big surface area and the high intensity, ets.Sphere carbonized resin supported nickel and transition metal was prepared by the carbonization and the reduced process by H-2 gas flow. D152 large pore cation exchange resin was the carrier. Nickel was the active constituent. Transition metal was the assistant. The results showed us that the key factors in preparation of sphere carbonized resin supported metal catalyst were metallic ion exchange, carbonization temperature and reduced time of active constituent. Meanwhile, Carbonizing process of resin was analyzed by DSC, obtaining the best carbonization temperature. The production rate of 2-propanol dehydrogenation as a simulation reaction was used to determine reduced time of active constituent. Its experimental result were given as follows:carbonization temperature was 773K, carbonization time was 30min, reduction process by H₂ gas flow was 70min.In order to inspect the reaction condition of nickel supported on the resin, this article was used the matlab software programming computation, obtaining the distribution curve of nickel - ammonia compound under different pH, thus further explained that the nickel ion formed the nickel - ammonia compound under different pH, and provided the theory basis for ion exchange.This thesis dealed with the study on the 2-propanol dehydrogenation and soybean oil hydrogenation reaction using nickel or nickel-cerium supported on carbonized resin as the catalyst to evaluate catalyst activity in details.Effects of reaction temperature, pressure, time on the activity of catalyst, different atom ratio supported on the catalyst, catalyst dosage and stability were investigated. The conditions on the 2-propanol dehydrogenation and soybean oil hydrogenation reaction had been determined.(1)The preparation parameters of the 2-propanol dehydrogenation using nickel supported on carbonized resin as a catalyst were obtained as follows: the dosage of 2-propanol was 100mL, the capacity of nickel supported on catalyst was 35.2wt%, the catalyst was 1.5g, the reaction temperature was 773K, and the reaction time was 1h, the yields of acetone could be up to 12.5%, the selectivity of acetone was 100%.(2) The preparation parameters of the soybean oil hydrogenation using nickel supported on carbonized resin as a catalyst were obtained as follows : the dosage of soybean oil was 100g, the capacity of nickel on catalyst was 21wt%, the catalyst was 1.5g, the reaction temperature was 773K, the reaction time was 2h, and the reaction pressure was 1.5MPa, soybean oil's iodine value was decreased from 130.0 to 81.7.(3) The preparation parameters of soybean oil hydrogenation using nickel-cerium supported on carbonized resin as a catalyst were obtained as follows : the dosage of soybean oil was 100g, the capacity of nickel on catalyst was 21wt%, The atomic ratio of nickel and cerium was 5:1,the catalyst was 0.5g, the reaction temperature was 773K, the reaction time was 1h, and reaction pressure was 1.5MPa, soybean oil iodine value was decreased from 130.0 to 18.8. Different transition metal were used as the catalyst's assistant and their active influence rule were obtained: Ce >La> Cr> Ag> Cu>Fe> Co>Cd>Zn.