...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Catalysis science & technology >MOF-derived hierarchical hollow spheres composed of carbon-confined Ni nanoparticles for efficient CO2 methanation
【24h】

MOF-derived hierarchical hollow spheres composed of carbon-confined Ni nanoparticles for efficient CO2 methanation

机译：MOF-derived层次空心球体组成carbon-confined镍纳米粒子的效率二氧化碳甲烷化

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

The hydrogenation of CO2 to CH4 is attracting growing attention due to the universal energy and climate challenges. In this work, we present the facile synthesis of hierarchical Ni@C spheres composed of dispersed Ni nanoparticles confined in carbon shells as an efficient catalyst for low-temperature CO2 methanation at ambient pressure. With Ni-based metal-organic frameworks (MOFs) as a precursor, the Ni@C composite was produced by thermal annealing in a N-2 atmosphere. The MOF-derived Ni@C hybrid with unique hollow and porous structures could afford high surface area and rich isolated active sites for CO2 adsorption/activation and redox processes. Therefore, the Ni@C catalyst exhibited high activity, excellent selectivity and superior stability for CO2 methanation reaction. The possible intermediates and reaction pathway of the CO2 conversion catalysis were carefully investigated by CO2-TPD measurements and in situ FTIR characterization. Furthermore, a possible CO2 methanation mechanism over the Ni@C catalyst was proposed.
机译：的二氧化碳加氢甲烷是吸引越来越多的关注,由于普遍的能源和气候的挑战。简单的合成层次Ni@C球体分散镍纳米粒子组成的碳壳作为一种高效的催化剂低温二氧化碳甲烷化环境压力。(mof)作为前体,Ni@C复合由n -热退火的气氛。独特的空心和多孔结构可以负担得起高表面积和丰富的孤立活动网站对二氧化碳吸附/活化和氧化还原流程。高的活动,良好的选择性和优越稳定二氧化碳甲烷化反应。可能的中间体和反应途径二氧化碳催化转化是仔细调查CO2-TPD测量和原位红外光谱表征。二氧化碳甲烷化机制在Ni@C催化剂提出了。

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