...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Catalysis science & technology >Mesostructured Co-Ce-Zr-Mn-O composite as a potential catalyst for efficient removal of carbon monoxide from hydrogen-rich stream
【24h】

Mesostructured Co-Ce-Zr-Mn-O composite as a potential catalyst for efficient removal of carbon monoxide from hydrogen-rich stream

机译：介质结构的共同CE-ZR-MN-O复合材料作为有效去除一氧化碳从富含氢的流中有效去除的潜在催化剂

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Mesostructured Co_xCe_(0.85)Zr_(0.15)Mn_yO_ε composites were firstly prepared by a simple one-pot surfactant-assisted co-precipitation (SACP) method and then employed to catalyze the CO preferential oxidation (CO PROX) reaction in an H2-rich stream. Effects of the Co and Mn contents (x and y, respectively) in the formula, as well as the presence of H2O and CO2 in feed were investigated. The as-synthesized Co_(0.4)Ce_(0.85)Zr_(0.15)Mn_(0.10)O_ε, catalyst showed excellent catalytic performance in the CO PROX reaction: 100% CO conversion could be observed in a wide temperature range of 140-200 °C; even in the simulated syngas, the almost complete CO removal could still be achieved at 175-225 °C; no obvious change in both CO conversion and CO2 selectivity over the catalyst took place during the CO PROX process with simulated syngas as feed. N2 physisorption (BET), temperature-programmed reduction (TPR), X-ray diffraction (XRD), Raman and X-ray photoelectron spectroscopic (XPS) characterization techniques were employed to reveal the relationship between the catalyst nature and catalytic performance. The outstanding catalytic performance in CO PROX reaction was remarkably dependent on a larger specific surface area, more reducible Co~(3+) and the high dispersity of the CO3O4, affected by the Co and Mn contents through strong Co-Ce-Zr-Mn interactions. The mesostructured Co_(0.4)Ce_(0.85)Zr_(0.15)Mn_(0.10)O_ε catalyst prepared by the simple one-pot SACP protocol can be a promising candidate for CO PROX reaction in excess H2.
机译：首先，通过简单的单锅表面活性剂辅助共药（SACP）方法制备Mesosstround co_xce_（0.85）Zr_（0.15）Mn_yo_ε复合材料，然后用来催化含有含量的氧化（CO Prox）反应（CO Prox）在H2富群流中的反应。研究了CO和MN含量（分别X和Y）在公式中的影响，以及饲料中H2O和CO2的存在。合成的co_（0.4）CE_（0.85）Zr_（0.15）Mn_（0.10）O_ε，催化剂在CO Prox反应中显示出极好的催化性能：可以在140-200°的宽温度范围内观察到100％CO转换C;即使在模拟的合伙们中，几乎完全的CO去除仍然可以在175-225°C下实现。 CO转换和CO2选择性对催化剂的选择性都没有明显变化，这在CO Prox过程中以模拟合符为feed进行。使用N2物理吸附（BET），温度序列还原（TPR），X射线衍射（XRD），拉曼和X射线光电光谱（XPS）表征技术来揭示催化剂性质与催化性能之间的关系。 CO Prox反应中出色的催化性能非常依赖于较大的特定表面积，更还原的CO〜（3+）和CO3O4的高色散性，受CO和MN含量通过强CO-CE-ZR-ZR的影响互动。介质结构的co_（0.4）ce_（0.85）Zr_（0.15）Mn_（0.10）由简单的单锅SACP协议制备的O_ε催化剂可以是多余H2的CO Prox反应的有前途的候选者。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号