论文部分内容阅读
采用真空浸渍法 ,制备了 Cu- Ni双金属催化剂 (引入 Cu前 ,Ni以不同的状态存在 ) ,在连续流动微型反应装置上测试了各催化剂上的 CO2 加氢性能 ,并用 XRD方法对催化剂进行了表征 .实验发现 ,与 Cu/Al2 O3催化剂相比 ,Cu- Ni/Al2 O3催化剂上 CO2 逆变换反应的活性因 Ni的存在而受到抑制 . Cu引入前处于氧化态的 Ni,对所制得的 Cu- Ni催化剂上 CO生成的抑制更为明显 . Cu- Ni/Al2 O3双金属催化剂表现出 CO2 甲烷化的催化活性 ,用引入 Cu前处于还原态的 Ni制备的双金属催化剂 ,更有利于 CH4的生成
The Cu-Ni bimetallic catalyst (before the introduction of Cu, Ni exists in different states) was prepared by vacuum impregnation. The hydrogenation performance of each catalyst was tested on a continuous flow microreactor. The catalysts were characterized by XRD The results showed that the activity of the inverse CO 2 conversion reaction on the Cu-Ni / Al 2 O 3 catalyst was inhibited by the presence of Ni in comparison with that of the Cu / Al 2 O 3 catalyst.Cu was introduced into Ni prior to oxidation in the presence of Ni Of the Cu-Ni catalyst on the formation of CO more obvious inhibition.Cu-Ni / Al2 O3 bimetallic catalyst showed CO2 methanation catalytic activity, before the introduction of Cu in the reduction of Ni prepared bimetallic catalyst, is more conducive to CH4 generation