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以海南椰壳为原料,粉碎、过筛后,采用二步活化法制备活性炭。先500℃下碳化,然后以KOH为活化剂,炭碱质量比1∶2、1∶3、1∶4,炉温分别为700℃、800℃和900℃在氮气保护下活化。在炭碱比1∶4,活化温度800℃时,得到的活性炭比表面积高达3275m2/g。将得到的比表面积在1100～3200m2/g活性炭通过PdCl2超声浸渍法,水合肼还原制备纳米级钯炭催化剂,经SA、XRD、TEM等分析,得出比表面积越大,纳米钯粒子在活性炭上的分布越均匀,粒子颗粒越小。
Hainan coconut shell as raw material, crushed, sieved, activated carbon prepared by two-step activation. Then carbonized at 500 ℃, and then activated with KOH as activator. The mass ratio of carbon to alkali was 1: 2, 1: 3 and 1: 4. The furnace temperature was 700 ℃, 800 ℃ and 900 ℃ respectively. When the ratio of carbon to alkali is 1: 4 and the activation temperature is 800 ℃, the specific surface area of activated carbon is as high as 3275m2 / g. The obtained surface area of 1100 ~ 3200m2 / g activated carbon by PdCl2 ultrasonic impregnation method, hydrazine hydrazine reduction prepared nano-scale palladium-carbon catalyst by SA, XRD, TEM analysis obtained the larger the specific surface area, palladium nanoparticles on the activated carbon The more uniform the distribution, the smaller the particle size.