Pd/C催化剂对生物质基丁酮催化加氢制取仲丁醇

研究了生物质基丁酮经Pd/C催化加氢制备仲丁醇的工艺条件，考察了反应时间、反应温度、氢压和催化剂用量对仲丁醇收率的影响。结果表明，Pd/C可催化丁酮进行加氢反应，主要产物为仲丁醇。在一定温度条件下，仲丁醇收率随温度的升高而增大，但超过一定范围，继续增加反应温度，收率反而下降。加氢压力1 MPa，反应8 h后，90 ℃、120 ℃和150 ℃条件下仲丁醇收率分别为53.1%、52.8%和45.5%；增大氢压，仲丁醇收率反而明显降低。增加催化剂用量，反应速率加快，反应时间缩短，但对最终仲丁醇收率的影响不大。

Preparation of 2-butanol by catalytic hydrogenation of biobased butanone over Pd/C catalyst

Preparation of 2-butanol via hydrogenation of biobased butanone catalyzed by Pd/C catalyst was studied. Effects of reaction time, reaction temperature, hydrogen pressure and catalyst dosage on the yield of 2-butanol were investigated. The results indicated that catalytic hydrogenation reaction of buta-none could be carried out over Pd/C catalyst and the main product was 2-butanol. 2-Butanol yield increased with the increase of temperature under suitable temperature condition and decreased with the increasedof temperature over certain temperature. 2-Butanol yields reached 53.1%, 52.8% and 45.5%, respectively, under reaction condition as follows: hydrogen pressure 1 MPa, reaction time 8 h and reac-tion temperature 90℃, 120℃ and 150℃. 2-Butanol yield decreased with the increase of hydrogen pressure. Increasing catalyst dosage quickened reaction speed and shortened reaction time, but had little influence on 2-butanol yield after reaction for 8 h.