Effect of the Particle Size of Quartz Powder on the Synthesis and CO2 Absorption Properties of Li4SiO4 at High Temperature

被引:66
|
作者
Xu, Hongliang [1 ]
Cheng, Weigao [1 ]
Jin, Xiaozeng [1 ]
Wang, Gaixian [1 ]
Lu, Hongxia [1 ]
Wang, Hailong [1 ]
Chen, Deliang [1 ]
Fan, Bingbing [1 ]
Hou, Tiecui [1 ]
Zhang, Rui [1 ,2 ]
机构
[1] Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China
[2] Zhengzhou Inst Aeronaut Ind Management, Zhengzhou 450015, Peoples R China
基金
中国国家自然科学基金;
关键词
LITHIUM ORTHOSILICATE; CHEMISORPTION; CAPTURE; DECOMPOSITION; SORPTION;
D O I
10.1021/ie301178p
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Li4SiO4 was obtained by using quartz powder of different particle sizes (75-180 mu m, 45-75 mu m, 38-45 mu m, and <38 mu m) and Li2CO3 as raw materials through a solid-state reaction at 720 degrees C. X-ray diffraction (XRD), scanning electron microscopy (SEM), and differential thermal analysis and thermogravimetry (DTA/TG) were used to examine the sintering behavior and properties of the samples. The results indicated that when the particle size of the quartz powder decreased, the solid-state reaction performed more completely, the content of the Li4SiO4 phase increased, and the size of the grain agglomerates decreased gradually. The enhanced chemical reactivity of the quartz powder with Li2CO3 and the shortened diffusion distance as the quartz size decreases are helpful to the formation of the Li4SiO4 phase. The sorption analysis revealed that the samples synthesized using the quartz powder with smaller particle sizes experienced a more rapid absorption-desorption process with a higher absorption efficiency.
引用
收藏
页码:1886 / 1891
页数:6
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