...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of industrial and engineering chemistry >Reactivity of Ni/SiO2MgO toward carbon dioxide reforming of methane under steady state and periodic operations
【24h】

Reactivity of Ni/SiO2MgO toward carbon dioxide reforming of methane under steady state and periodic operations

机译：Ni / SiO2MgO在稳态和周期性操作下对甲烷二氧化碳重整的反应性

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 carbon dioxide reforming of methane over commercial Ni/SiO2MgO catalyst under periodic and steady state operations was investigated at a temperature range of 650-750 °C. Under steady state operation, methane conversions tended to be constant with reaction time but increased with increasing reaction temperature. It was then observed that at low temperature (650 °C) under the periodic operation, methane conversion was also constant at approximately 48% throughout reaction time, but for the operation at a higher temperature, i.e. 750 °C, higher methane conversion (about 67%) was initially achieved but decreased dramatically with reaction time (to 27% in 240 min). The reason for the catalyst deactivation particularly for the periodic operation was further investigated by TPO, BET and XRD. It is suggested that at different operating temperatures, various types of coke occurred on the surface of catalyst and affected the catalytic activity.
机译：在650-750°C的温度范围内，研究了工业Ni / SiO2MgO催化剂在周期性和稳态操作下甲烷的二氧化碳重整。在稳态操作下，甲烷转化率倾向于随反应时间而恒定，但是随着反应温度的升高而增加。然后观察到，在周期性操作下在低温（650°C）下，甲烷转化率在整个反应时间内也恒定为约48％，但对于在较高温度下（即750°C）的甲烷转化率较高（约最初达到了67％），但随着反应时间而急剧下降（在240分钟内降至27％）。 TPO，BET和XRD进一步研究了催化剂失活的原因，特别是对于周期性操作而言。建议在不同的操作温度下，在催化剂表面上会发生各种类型的焦炭并影响催化活性。

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