• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Pillared clay-supported gold catalysts for CO oxidation
【24h】

Pillared clay-supported gold catalysts for CO oxidation

机译：用于共同氧化的柱粘土支撑的金催化剂

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Gold supported on various bentonites was prepared using hydrothermal and co-precipitation methods. The catalysts were characterized by FT-IR, BET, XRD, TEM, SEM, XPS and ICP and tested for CO oxidation reaction. It was found that the Au–Al–Ce pillared bentonite, Au–Al–Ce/Na-LBen (CP) and Au–Al–Ce/Na-LBen (HT), have better catalytic activity and stability than Au/Na-Lben and Au/Al–Ce–Na-LBen. Characterization results show that gold nanoparticles could move into the interlayer spaces of bentonite, which contributes to the high stability of the Au–Al–Ce/Na-LBen (HT) and Au–Al–Ce/Na-LBen (CP) samples. Ce oxide is distributed on the surface of Au–Al–Ce/Na-LBen (HT), while it stays in the interlayers of the bentonite in the Au–Al–Ce/Na-LBen (CP) sample. The pillaring process could increase the d _((001)) space of the bentonite since the Ce and Au species could move into the interlayer space of the bentonite. The acid-activation process clearly increases the surface area of the bentonite, while the pillaring process increases the surface area of the samples slightly.
机译：使用水热和共沉淀方法制备各种膨润土上的金。催化剂的特征在于FT-IR，BET，XRD，TEM，SEM，XPS和ICP，并测试CO氧化反应。发现Au-Al-Ce柱状膨润土，Au-Al-Ce / Na-Lben（CP）和Au-al-Ce / Na-Lben（HT）具有更好的催化活性和稳定性而不是Au / Na- LBEN和AU / AL-CE-NA-LBEN。表征结果表明，金纳米颗粒可以进入膨润土的层间空间，这有助于Au-Al-Ce / Na-Lben（HT）和Au-Al-Ce / Na-Lben（CP）样品的高稳定性。 Ce氧化物分布在Au-Al-Ce / Na-Lben（HT）的表面上，同时它停留在Au-Al-Ce / Na-Lben（CP）样品中的膨润土的中间层。由于CE和Au物种可以进入膨润土的层间空间，柱的过程可以增加膨润土的D _（001））空间。酸活化过程清楚地增加了膨润土的表面积，而柱状过程略微增加样品的表面积。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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