中国电机工程学报2011，Vol.31Issue(8)：45-50,6.
纳米复合钙基高温CO2吸收剂的合成与性能
Synthesis and Performance of a Nano Synthetic Ca-based Sorbent for High Temperature CO2 Capture
摘要
Abstract
The post-combustion Ca-based high temperature carbonation/calcination cycle has been identified to be an attractive method for CO2 capture from flue gas of coal combustion. However, it is proved that the capture ability of regenerative CaO sharply decreases with increasing carbonation/calcination cycles. In order to improve the carbonation conversion of CaO after multiple cycles, a nano synthetic CaO/MgO sorbent was synthesized by sol-gel-combustion-synthesis method, and the mole ratio of CaO to MgO was 10:1. The experimental results indicated that a hollow microstructure was formed during this preparation process for the Ca-based sorbent and it was beneficial for the sorbent to enhance its CO2 capture ability during high temperature carbonation process. Although the additive weight ratio of MgO was small, the novel synthetic sorbent still had a good cyclic performance and its pore structure kept comparative stable during carbonation/calcination reactions. After 30 carbonation/ calcination cycles, the carbonation conversion of it achieved 66% which was much higher than normal analytical pure CaO sorbent关键词
CO2/CaO/MgO/碳化效率/溶胶凝胶燃烧合成法分类
化学化工引用本文复制引用
罗聪,郑瑛,丁宁,吴琪珑,郑楚光..纳米复合钙基高温CO2吸收剂的合成与性能[J].中国电机工程学报,2011,31(8):45-50,6.基金项目
国家重点基础研究发展规划项目(2006CB705807,2011CB707301) （2006CB705807,2011CB707301）
国家自然科学基金项目(50936001,507210058). （50936001,507210058）
