Ni/D152树脂炭化催化剂的制备及其对异丙醇脱氢反应的催化性能

以Ni(NO₃)₂ 溶液及D152树脂为原料，采用柱上离子交换法制备Ni/D152树脂。将该树脂在N₂保护下炭化，然后用H₂活化制备得到Ni/D152树脂炭化催化剂。用DSC、XRD和SEM等分析测试手段对催化剂的制备过程及结构进行表征，用异丙醇脱氢为模型反应考察了Ni/D152树脂炭化催化剂的性能。结果表明，当树脂负载Ni质量分数为35.2%，N₂保护下500 ℃炭化30 min，在H₂气氛中活化70 min，制得的Ni/D152树脂炭化催化剂对异丙醇脱氢反应具有较好的活性。对100 mL异丙醇，当催化剂用量为1.5 g，反应温度220 ℃和反应时间1 h，丙酮收率为12.5%，选择性为100%。

Preparation of Ni/D152 carbonized resin catalyst and its catalytic behaviors for 2-propanol dehydrogenation reaction

Ni/D152 carbonized resin catalysts were prepared using Ni(NO₃)₂ solution transflux D152 ion exchange column, followed by carbonization of the Ni/D152 resin under N₂ gas protection and reduction by H₂ gas flow. The preparation condition was investigated and the structure of the catalyst was characterized by DSC, XRD and SEM. Activity of the catalyst for dehydrogenation of 2-propanol to acetone was studied. The results showed that the catalyst with 35.2wt% loadings of nickel, prepared by carbonization for 30 min under N₂ gas protection and activation for 70 min at 500 ℃ under hydrogen gas flow had superior catalytic activity for dehydrogenation of 2-propanol. Acetone yield of 12.5% and selectivity to acetone of 100% were obtained under the following experimental conditions: V(2-propanol)=100 mL, m(catalyst)=1.5 g, reaction temperature 220 ℃, reaction time 1 h.