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首页> 外文期刊>Fuel >Development of new alumina-modified sorbents for CO_2 sorption and regeneration at temperatures below 200 ℃
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Development of new alumina-modified sorbents for CO_2 sorption and regeneration at temperatures below 200 ℃

机译：研发用于200℃以下温度下CO_2吸附和再生的新型氧化铝改性吸附剂

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摘要

A new regenerable alumina-modified sorbent was developed for CO_2 capture at temperatures below 200 ℃ The CO_2 capture capacity of a potassium-based sorbent containing A1_2O_3 (KA1I) decreased during multiple CO_2 sorption (60 ℃) and regeneration (200 ℃) tests due to the formation of the KA1(CO_3)(OH)_2 phase, which could be converted into the original K_2CO_3 phase above 300 ℃ However, the new regener able potassium-based sorbent (Re-KAl(I)) maintained its CO_ capture capacity during multiple tests even at a regeneration temperature of 130 ℃. In particular, the CO_2 capture capacity of the Re-KA1(1)60 sorbent which was prepared by the impregnation of A1_2O_3 with 60 wt.% K_CO_3 was about 128 mg CO_2/g sorbent. This excellent CO_2 capture capacity and regeneration property were due to the characteristics of the Re-KAl(I) sorbent producing only a KHCO_3 phase during CO_2 sorption, unlike the KA1I30 sorbent which formed the KHCO_3 and KA1(CO_3)(OH)_2 phases even at 60 ℃ This result was explained through the struc tural effect of the support containing the KA1(CO_3)(OH)_2 phase which was prepared by impregnation of A1_2O_3 with K_2CO_3 in the presence of CO_2.
机译：针对200℃以下的CO_2捕集开发了一种新型的可再生氧化铝改性吸附剂。在多次CO_2吸附（60℃）和再生（200℃）试验中，含A1_2O_3的钾基吸附剂的CO_2捕集能力下降。 KA1（CO_3）（OH）_2相的形成，可在300℃以上转化为原始的K_2CO_3相。然而，新型可再生钾基吸附剂（Re-KAl（I））保持了其CO_捕集能力。即使在130℃的再生温度下也可以进行多次测试。特别地，通过用60重量％的K_CO_3浸渍A1_2O_3制备的Re-KA1（1）60吸附剂的CO_2捕获能力为约128mg CO_2 / g吸附剂。这种出色的CO_2捕集能力和再生性能归因于Re-KAl（I）吸附剂在CO_2吸附过程中仅产生KHCO_3相的特性，而KA1I30吸附剂甚至形成了KHCO_3和KA1（CO_3）（OH）_2相。在60℃时，此结果通过含有KA1（CO_3）（OH）_2相的载体的结构效应来解释，该载体是通过在CO_2存在下用K_2CO_3浸渍A1_2O_3制备的。

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  • 来源
    《Fuel》 |2011年第4期|p.1465-1470|共6页
  • 作者

    Soo Chool Lee; Yong Mok Kwon; Chun Yong Ryu; Ho Jin Chae; Dhanusuraman Ragupathy; Suk Yong Jung; Joong Beom Lee; Chong Kul Ryu; Jae Chang Kim;

  • 作者单位

    Department of Chemical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea;

    Department of Chemical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea;

    Department of Chemical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea;

    Department of Chemical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea;

    Department of Chemical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea;

    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea;

    Korea Electric Power Research Institute, Daejon 305-380, Republic of Korea;

    Korea Electric Power Research Institute, Daejon 305-380, Republic of Korea;

    Department of Chemical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    co_2; a1_2o_3; k_2co_3; khco_3; kal(co_3)(oh)_2;

    机译：co_2;a1_2o_3;k_2co_3;khco_3;卡尔（co_3）（哦）_2;

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