200分翻译英文文献摘要和题目(请人工翻译)

来源:百度知道 编辑:UC知道 时间:2024/05/15 19:37:03
Activity and characterization of the Co-promoted CuO–CeO2/γ-Al2O3 catalyst for the selective oxidation of CO in excess hydrogen

Abstract
For the selective oxidation of CO in excess hydrogen, γ-Al2O3-supported CuO–CeO2-based catalysts were investigated.Effects of the composition of Cu and Ce metals and the addition of Co as a promoter to the catalyst on the catalytic activity and the selectivity for the CO oxidation against H2 were determined as a function of temperature.The effects of the feeding ratio of O2 to CO and the presence of H2O and/or CO2 in the feeding reactant were also examined.Among the catalysts tested,CuO–CeO2/γ-Al2O3 incorporating Co by 0.2 wt.%was the most active to show the CO conversion>99%in the wide temperature window of 150–220°C with the CO oxidation selectivity of 94–50%.It was found from the catalyst characterization using temperature-programmed reduction/oxidation that the Co-promoted CuO–CeO2/γ-Al2O3, as compared with the catalyst without

活动及表征的合作,促进了CuO -氧化铈/ γ - Al2O3催化剂为选择性氧化的合作,在过剩的氢

摘要
为选择性氧化的合作,在过剩的氢, γ - Al2O3负载的CuO - CeO2基催化剂investigated.effects的组成,铜和行政长官的金属,以及增补的合作作为一个启动的催化剂对催化剂活性和选择性为CO氧化反应对H2的决心作为一个功能温度的影响,饲比例O2的合作,和在场的H2O和/或CO2在饲反应也examined.among催化剂的试验,氧化铜-氧化铈/ γ - Al2O3的合作,把由0.2小波变换。 % ,是最活跃,显示CO转化率> 99 % ,在宽的温度窗口150-220 ° C时与CO氧化选择性的94-50 % 。它被发现从催化剂的表征使用程序升温还原/氧化认为,合作,促进氧化铜-氧化铈/ γ - Al2O3的,相比之下,与催化剂没有合作,此外,有日益增多的CO氧化活性的网站能够被轻易地减少或氧化相对低temperatures.however ,在场的CO2和H2O在饲料中减少低温催化剂活性,并把温度的窗口, CO转化率> 99 % ,温度较高地区, ie205 - 230 ° C时,不论该在场的双方CO2和H2O在饲料中,合作,纳入催化剂被发现有温度的窗口, CO转化率> 99.9 % 210-224 ° C时,而没有这样的温度窗口存在为铜-氧化铈/ γ - Al2O3催化剂catalyst.temperature编程解吸一氧化碳,二氧化碳,水或还进行了了解催化反应的行为,在该律师在场的二氧化碳和/或H2O在反应。
○ c2004 Elsevier公司乙诉,保留所有权利。

关键词: CO选择性氧化,在过剩的H2 ;铜行政长官基催化剂;合作,启动子;效应CO2和H2O ;程序升温还原/氧化/解吸