【摘要】 研究了锰、钴、锆等过渡金属对Cu60＿Zn30＿Al10变换催化剂性能的影响,并采用XRD、TPD、TPR等手段对其进行了表征。结果表明,过渡金属的加入提高了催化剂的活性,其中以锰的改性效果最好。锰的加入提高了催化剂的分散度、活性比表面积和CO吸附量,降低了催化剂的还原温度,改善了催化剂的性能;铜基催化剂在变换反应中的活性相主要是Cu0和Cu+。更多还原

【Abstract】 Effect of Mn, Co and Zr transitional metals on the catalytic properties of Cu₆₀-Zn₃₀-Al₁₀ catalyst for water gas shift reaction was studied. The samples were characterized by XRD, CO-TPD and H₂-TPR. The results suggested that the addition of transient metals improved the properties of Cu₆₀-Zn₃₀-Al₁₀ catalyst. Cu₆₀-Zn₃₀-Al₅-Mn₅ catalyst employes optimum activity. The addition of Mn increases the active surface area and Cu dispersity, lowers catalyst reduction temperature. It also shows that the active phases of the catalyst are Cu⁰ and Cu⁺.更多还原