| 陈彤,王仁国,张国民,胡常伟,田安民.Cu-Ni双金属催化剂上CO_2的加氢反应[J].分子催化,2000,(1): |
| Cu-Ni双金属催化剂上CO_2的加氢反应 |
| Hydrogenation of CO_2 over Cu-Ni/Al_2O_3 Bimetallic Catalysts |
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| DOI： |
| 中文关键词: CO_2加氢,Cu-Ni双金属催化剂,Cu-Ni催化剂制备 |
| 英文关键词:Hydrogenation of CO_2,Cu Ni bimetallic catalyst,Preparation of Cu\|Ni bimetallic catalyst |
| 基金项目:国家自然科学基金，四川省应用基础研究基金资助项目 |
| 陈彤 王仁国 张国民 胡常伟 田安民 |
贵阳中医学院药学系!贵阳550002(陈彤)
，四川农业大学基础部!雅安625014(王仁国)
，四川大学化学学院!成都610064(张国民，胡常伟，田安民)
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| 中文摘要: |
| 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 |
| 英文摘要: |
| Cu Ni/Al 2O 3 bimetallic catalysts were prepared by vacuum impregnation. Catalysts with different chemical states of Ni before the Cu impregnation were investigated by CO 2 hydrogenation activity measurement and XRD characterization. It is found that as compared with Cu/Al 2O 3 catalysts the activity of reverse transform reaction of CO 2 on Cu Ni/Al 2O 3 is suppressed by the presence of Ni. This suppressing effect is more obvious if Ni is in the oxidized state before the Cu impregnation than if Ni is in the reduced state. Cu Ni/Al 2O 3 bimetallic catalysts exhibit methanation activity but Cu/Al 2O 3 catalysts do not. The methanation activity is higher when Ni is in the reduced state before the impregnation of Cu than when Ni is in the oxidized state. |
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