• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Catalysis science & technology >The role of Ni sites located in mesopores in the selectivity of anisole hydrodeoxygenation
【24h】

The role of Ni sites located in mesopores in the selectivity of anisole hydrodeoxygenation

机译：NI位点位于中孔中的NI位点在弧醇和氧化的选择性中的作用

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 highly dispersed Ni catalyst with an increased number of Ni sites selectively distributed in the mesopores of HBEA has been developed and applied in anisole hydrodeoxygenation (HDO) in a continuous-flow reactor under a high WHSV (2.8 min−1). The developed catalyst (Ni/BEA-OR-PH) displayed a significantly higher cyclohexane formation rate compared to the catalysts prepared by incipient wetness impregnation (Ni/BEA-IWI) and deposition–precipitation (Ni/BEA-DP) methods, which was attributed to its higher number of accessible active metal sites in mesopores. While the Ni/BEA-DP as well as Ni/BEA-OR-PH exhibited a high dispersion, a higher concentration of Ni species was located in micropores and distributed as charge-compensating cations, leading to a low concentration of high-temperature desorbed H per surface Ni, which facilitates the hydrogenolysis activity but restricts the hydrogenation of aromatics. Therefore, a high yield of BTX (benzene, toluene and xylene isomers) products was detected over Ni/BEA-DP.
机译：在HBEA的中孔中选择性分布的Ni位点数量增加的高度分散的NI催化剂已在高WHSV下的连续流动反应器中开发并应用于Anisole Hyddoxygygation（HDO）（2.8 min-1）。与通过初期湿度浸渍（NI/BEA-IWI）和沉积 - 预应（NI/BEAD-DP）制备的催化剂相比，开发的催化剂（Ni/Bea-or-PH）显示出明显更高的环己烷形成速率，这是它的催化剂。归因于其中孔中较高的可访问活性金属位点。虽然Ni/BEAD-DP以及Ni/Bea-or-PH表现出较高的分散体，但较高浓度的Ni物种位于Micropores中，并作为电荷补偿阳离子分布，导致高浓度的高温吸引力。 h每表Ni，促进氢解活性，但限制了芳香族剂的氢化。因此，在Ni/BEAD-DP上检测到BTX（苯，甲苯和二甲苯）产物的高收率。

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