高岭土-硅酸锂的制备及其吸附CO2动力学

doi:10.11949/j.issn.0438-1157.20150896

化工学报 ›› 2015, Vol. 66 ›› Issue (9): 3712-3718.DOI: 10.11949/j.issn.0438-1157.20150896

高岭土-硅酸锂的制备及其吸附CO₂动力学

谢洪燕, 丁彤, 李玉龙, 高挪挪

天津大学化工学院, 天津 300072

收稿日期:2015-06-11 修回日期:2015-06-30 出版日期:2015-09-05 发布日期:2015-09-05
通讯作者: 丁彤
基金资助:
天津市科委基金项目(15JCYBJC23000)。

Preparation and adsorption kinetic analysis of kaolin-Li₄SiO₄

XIE Hongyan, DING Tong, LI Yulong, GAO Nuonuo

(School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Received:2015-06-11 Revised:2015-06-30 Online:2015-09-05 Published:2015-09-05
Supported by:
supported by the Science and Technology Foundation of Tianjin (15JCYBJC23000).

摘要/Abstract

摘要：

以煤系高岭土为硅源,采用浸渍沉淀法制备硅酸锂吸附剂。采用X射线衍射仪、扫描电子显微镜分别表征和分析了样品的结构特征和形貌特征,并使用差热-热重联用分析仪研究了硅酸锂吸附CO₂的性能。实验结果表明,与以市售-SiO₂为硅源制备的硅酸锂相比,高岭土-硅酸锂在较低温度下有明显的吸附CO₂优势;采用浸渍沉淀法可成功制备出纯度较高的硅酸锂,最大吸附量为35.7%(704℃)(文中吸附量均为质量分数),高出固相法5.9%;采用双指数模型对硅酸锂吸附CO₂进行动力学分析,温度低于600℃时,表面化学反应过程是整个反应过程的控制步骤。高于650℃,锂迁移成为控制步骤。在吸附CO₂的过程中,浸渍沉淀法制备的样品锂迁移速率是固相法的1.5～2.2倍,低于650℃时的吸附,浸渍沉淀法的样品表面化学反应速率皆高于固相法。

关键词: 高岭土, 正硅酸锂, 浸渍沉淀法, 二氧化碳, 动力学

Abstract:

With kaolin-SiO₂ as silicon source, lithium orthosilicate sorbents were prepared by impregnation- precipitation method. The crystal structures and morphologies were characterized by XRD and SEM, respectively. The CO₂ absorption performance was studied by a thermogravimetric analyzer. The results indicated that the adsorbing capacity of kaolin-Li₄SiO₄ was higher than SiO₂-Li₄SiO₄ at 350-700℃ in comparison with Li₄SiO₄ prepared with commercial SiO₂. The high purity Li₄SiO₄ can be prepared by the impregnation-precipitation method successfully. The maximum adsorption of Li₄SiO₄ made by impregnation-precipitation method got up to 35.7% (mass) (704℃), which was 5.9% (mass) higher than Li₄SiO₄ made by solid method. The CO₂ chemisorption produced directly over the Li₄SiO₄ particles was the limiting step of the whole reaction process when the temperature was lower than 600℃. The CO₂ chemisorption process controlled by diffusion process was the limiting step of the whole reaction process when the temperature was higher than 650℃. The lithium diffusion rate of samples made by impregnation-precipitation method was nearly double for samples made by solid method. The rate of CO₂ chemisorption produced directly over the Li₄SiO₄ particles made by impregnation-precipitation method was higher.

Key words: kaolin, lithium orthosilicate, impregnation-precipitation method, carbon dioxide, kinetic

中图分类号:

TQ170.9

谢洪燕, 丁彤, 李玉龙, 高挪挪. 高岭土-硅酸锂的制备及其吸附CO₂动力学[J]. 化工学报, 2015, 66(9): 3712-3718.

XIE Hongyan, DING Tong, LI Yulong, GAO Nuonuo. Preparation and adsorption kinetic analysis of kaolin-Li₄SiO₄[J]. CIESC Journal, 2015, 66(9): 3712-3718.

参考文献 20

[1]	Fang Jingyun (方精云), Zhu Jiangling (朱江玲), Wang Shaopeng (王少鹏). Global warming, carbon emissions and uncertainty [J]. Science China: Earth Science (中国科学: 地球科学), 2011, (10): 1385-1395.
[2]	Fang Huashu (方华书). Carbon dioxide and greenhouse effect [J]. Journal of Fuzhou Teachers College (福州师专学报), 2000, (6): 56-59.
[3]	Nakagawa K, Ohashi T. A novel method of CO2 capture from high temperature gases [J]. Journal of the Electrochemical Society, 1998, 145 (4): 1344-1346.
[4]	Ochoa-Fernández E, Rønning M, Grande T, Chen D. Synthesis and CO2 capture properties of nanocrystalline lithium zirconate [J]. Chemistry Materials, 2006, 18: 6037-6046.
[5]	Raskar R, Rane V, Gaikwad A. The applications of lithium zirconium silicate at high temperature for the carbon dioxide sorption and conversion to syn-gas [J]. Water Air and Soil Pollution, 2013, 224: 1569.
[6]	Wang Jinxiang (王金香), Liu Yin (刘银), Peng Xiaobo (彭小波). Study on the property of CO2 absorbed with Li4SiO4 material [J]. Bulletin of the Chinese Ceramic Society (硅酸盐通报), 2014, (3): 620-623.
[7]	Wang Yinjie (王银杰), Qi Lu (其鲁), Wang Weijun (江卫军). Effect of doping K element on properties of lithium silicate as CO2-absorbent [J]. Transactions of Beijing Institute of Technology, 2006, 26 (5): 458-467.
[8]	Nobuaki T, Takeshi O, Katsuyoshi O. Synthesis and CO2 absorption property of Li4TiO4 as a novel CO2 absorbent [J]. Journal of the Ceramic of Japan, 2007, 115 (1341): 324-328.
[9]	Palacios-Romero L M, Pfeiffer H. Lithium cuprate (Li2CuO2): a new possible ceramic material for CO2 chemisorption [J]. Chemistry Letters, 2008, 37 (8): 862-863.
[10]	Kato M, Yoshikawa S, Nakagawa K. Carbon dioxide absorption by lithium orthosilicate in a wide range of temperature and carbon dioxide concentrations [J]. Journal of Materials Science Letters, 2002, 21: 485-487.
[11]	Essaki K, Nakagawa K, Kato M, Uemoto H. CO2 absorption by lithium silicate at room temperature [J]. Journal of Chemical Engineering of Japan, 2004, 37 (6): 772-777.
[12]	Wang Wenzhe (汪文哲), Xiong Gui (熊贵), Zhang Junying (张军营). Influence of Ti-doping on CO2 absorption by Li4SiO4 at high-temperatures [J]. Journal of Chinese Society of Power Engineering (动力工程学报), 2010, 30 (8): 623-627.
[13]	Shan S Y, Li S M, Jia Q M, Jiang L H, Wang Y M, Peng J H. Impregnation precipitation preparation and kinetic analysis of Li4SiO4-based sorbents with fast CO2 adsorption rate [J]. Industrial & Engineering Chemistry Research, 2013, 52: 6941-6945.
[14]	Li Qinchao (李芹超). The research on preparation and CO2 absorption performance of lithium orthosilicate [D]. Kunming: Kunming University of Science and Technology, 2011.
[15]	Venegas M J, Fregoso-Israel E, Escamilla R, Pfeiffer H. Kinetic and reaction mechanism of CO2 sorption on Li4SiO4: study of the particle size effect [J]. Industrial & Engineering Chemistry Research, 2007, 46: 2407-2412.
[16]	Wu Zeguang (伍泽广). Study on the preparation of multi-form alumina and siliceous inorganic filler form coal-bearing kaolin [D]. Xuzhou: China University of Mining and Technology, 2012.
[17]	Zhang Qichun (张其春),Ye Qiaoming (叶巧明). The preparation of white carbon black from kaolin [J]. Chinese Journal of Applied Chemistry, 1999, 16 (5): 91-93.
[18]	Hu Puhua (胡普华), Wang Aiguo (王爱国), Sun Daosheng (孙道胜). Orthogonal optimization design of preparing geopolymeric cement with alkali activation of coal-kaolinite [J]. Materials Review, 2008, (11): 150-152, 156.
[19]	Zhu Hua (朱华). The industry progress and situation of application in kaolin [J]. Mining Engineering, 2005, (6): 25-26.
[20]	Liu Yulan (刘玉兰). Study on CO2 absorption performance of lithium orthosilicates [D]. Tianjin: Tianjin University, 2013.

高岭土-硅酸锂的制备及其吸附CO₂动力学

Preparation and adsorption kinetic analysis of kaolin-Li₄SiO₄

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