• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Thermochemical Capture of Carbon Dioxide on Lithium Aluminates (LiAlO_2 and Li_5AlO_4): A New Option for the CO_2 Absorption
【24h】

Thermochemical Capture of Carbon Dioxide on Lithium Aluminates (LiAlO_2 and Li_5AlO_4): A New Option for the CO_2 Absorption

机译：铝酸锂（LiAlO_2和Li_5AlO_4）上二氧化碳的热化学捕获：吸收CO_2的新选择

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

Lithium aluminates (LiAlO_2 and Li_5AlO_4) were synthesized, characterized, and tested as possible CO_2 captors. LiAlO_2 did not seem to have good qualities for the CO_2 absorption. On the contrary, Li_5AlO_4 showed excellent behavior as a possible CO_2 captor. Li5_AlO_4 was thermally analyzed under a CO_2 flux dynamically and isothermically at different temperatures. These results clearly showed that Li_5AlO_4 is able to absorb CO_2 in a wide temperature range (200-700 °C). Nevertheless, an important sintering effect was observed during the thermal treatment of the samples, which produced an atypical behavior during the CO_2 absorption at low temperatures. However, at high temperatures, once the lithium diffusion is activated, the sintering effect did not interfere with the CO_2 absorption. Eyring’s model was used to determine the activation enthalpies of the CO2 absorption (15.6 kJ/mol) and lithium diffusion (52.1 kJ/mol); the last one is the limiting process.
机译：合成，表征和测试铝酸锂（LiAlO_2和Li_5AlO_4）作为可能的CO_2捕获剂。 LiAlO_2似乎没有很好的CO_2吸收质量。相反，Li_5AlO_4作为可能的CO_2捕获剂表现出出色的行为。 Li5_AlO_4在不同温度下在CO_2助焊剂下进行动态等温热分析。这些结果清楚地表明，Li_5AlO_4能够在较宽的温度范围（200-700°C）下吸收CO_2。然而，在样品的热处理过程中观察到了重要的烧结效果，这在低温下吸收CO_2的过程中产生了非典型的行为。但是，在高温下，一旦锂扩散被激活，烧结效果就不会干扰CO_2的吸收。用Eyring模型确定二氧化碳吸收（15.6 kJ / mol）和锂扩散（52.1 kJ / mol）的活化焓。最后一个是限制过程。

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