• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Facile synthesis of manganese-loaded mesoporous silica materials by direct reaction between KMnO4 and an in-situ surfactant template
【24h】

Facile synthesis of manganese-loaded mesoporous silica materials by direct reaction between KMnO4 and an in-situ surfactant template

机译：通过KMnO4与原位表面活性剂模板之间的直接反应轻松合成锰负载的介孔二氧化硅材料

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

A series of manganese oxide-loaded SBA-15 (MnSBA-xh, x = 1, 2, 3, 4, 5, 6, h hour(s)) mesoporous materials are synthesized via a facile, in-situ reduction method with a surfactant template. The composite materials are characterized using Fourier-transform infrared spectroscopy, X-ray diffraction, N-2 sorption isotherms, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy energy-dispersive spectroscopy, and CO oxidation catalysis. The results show that a high content of manganese (an atomic ratio of Mn/Si from 0.12 up to approximately 1) could be loaded into the channels of SBA-15 when treated with an aqueous solution of potassium permanganate, while retaining the ordered mesostructure and large surface area of SBA-15. Increasing the manganese oxide content results in a gradual decrease in the specific surface area, pore size, and pore volume XPS spectra are employed to confirm the redox reaction between KMnO4 and the surfactant. CO-conversion tests on the calcined MnSBA-2h sample (MnSBA-2h-cal) shows that it has a repeatable, and relatively high, catalytic activity.
机译：通过一种简便，原位还原的方法合成一系列负载氧化锰的SBA-15（MnSBA-xh，x = 1，2，3，4，5，6，h小时）。表面活性剂模板。使用傅里叶变换红外光谱，X射线衍射，N-2吸附等温线，X射线光电子能谱（XPS），透射电子显微镜能量色散谱和CO氧化催化来表征复合材料。结果表明，用高锰酸钾水溶液处理时，高含量的锰（Mn / Si原子比从0.12到大约1的锰）可以装载到SBA-15的通道中，同时保持有序的介孔结构和SBA-15的表面积大。锰氧化物含量的增加导致比表面积，孔径和孔体积的逐渐减小。XPS光谱用于确认KMnO4与表面活性剂之间的氧化还原反应。对煅烧后的MnSBA-2h样品（MnSBA-2h-cal）进行的CO转化测试表明，该催化剂具有可重复且相对较高的催化活性。

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