微通道反应器内富氢重整气中CO选择性甲烷化净化

将4Ni-2Ru/ZrO2双金属催化剂均匀涂布到微通道反应器中，运用CO选择性甲烷化方法来净化富氢重整气中的CO。考察了焙烧温度、催化剂的涂布方法和CTAB/Zr的比例对催化剂性能的影响。实验结果表明：CTAB/Zr=0.35、350 ℃焙烧所制备的催化剂表现出良好的低温活性。反应温度240 ℃时可将CO的出口浓度降低到11 ppm，在温度240～300 ℃、空速13000～20000 h-1的范围内CO的转化率都可达99%以上，CO2的转化率不超过7%。

Selective Catalytic Methanation of CO in Hydrogen-rich Gas by the Use of a Microchannel Reactor

4Ni-2Ru/ZrO2 bimetallic catalyst was homogeneous coated on a microchannel reactor, and using CO selective methanation to purify hydrogen-rich gas. The effects of calcination temperature, coating method and the ratio of CTAB to Zr were examined. The results showed that: 4Ni-2Ru/ZrO2 catalyst displayed excellent performance in low temperature when calcination temperature was 350 ℃ and the ratio of CTAB to Zr was 0.35. CO concentration can be reduced to 11 ppm at 240 ℃, and CO conversion can reach above 99%，CO2 conversion was less than 7% from 240 ℃ to 300 ℃ even operating at a gas-hourly-space-velocity as high as 13000～20000 h-1.