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首页> 外文期刊>Environmental Science & Technology >Effect of Cerium Oxide Doping on the Performance of CaO-Based Sorbents during Calcium Looping Cycles
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Effect of Cerium Oxide Doping on the Performance of CaO-Based Sorbents during Calcium Looping Cycles

机译：钙循环中氧化铈掺杂对CaO基吸附剂性能的影响

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摘要

A series of CaO-based sorbents were synthesized through a sol-gel method and doped with different amounts of CeO_2. The sorbent with a Ca/Ce molar ratio of 15:1 showed an excellent absorption capacity (0.59 gCO_2/g sorbent) and a remarkable cycle durability (up to 18 cycles). The admirable capture performance of CaCe-15 was ascribed to its special morphology formed by the doping of CeO_2 and the well-distributed CeO_2 particles. The sorbents doped with CeO_2 possessed a loose shell-connected cross-linking structure, which was beneficial for the contact between CaO and CO_2. CaO and CeO_2 were dispersed homogeneously, and the existence of CeO_2 also decreased the grain size of CaO. The well-dispersed CeO_2, which could act as a barrier, effectively prevented the CaO crystallite from growing and sintering, thus the sorbent exhibited outstanding stability. The doping of CeO_2 also improved the carbonation rate of the sorbent, resulting in a high capacity in a short period of time.
机译：通过溶胶-凝胶法合成了一系列CaO基吸附剂，并掺杂了不同量的CeO_2。 Ca / Ce摩尔比为15：1的吸附剂显示出优异的吸收能力（0.59 gCO_2 / g吸附剂）和出色的循环耐久性（最多18个循环）。 CaCe-15的优异捕获性能归因于其对CeO_2和CeO_2分布均匀的掺杂形成的特殊形态。 CeO_2掺杂的吸附剂具有疏松的壳连接交联结构，有利于CaO与CO_2的接触。 CaO和CeO_2均匀分散，并且CeO_2的存在也减小了CaO的晶粒尺寸。分散良好的CeO_2可以作为阻挡层，有效地阻止了CaO晶体的生长和烧结，因此吸附剂表现出出色的稳定性。 CeO_2的掺杂还提高了吸附剂的碳酸化率，从而在短时间内具有很高的容量。

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  • 来源
    《Environmental Science & Technology》 |2015年第8期|5021-5027|共7页
  • 作者

    Shengping Wang; Shasha Fan; Lijing Fan; Yujun Zhao; Xinbin Ma;

  • 作者单位

    Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China;

    Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China;

    Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China;

    Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China;

    Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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