石油化工高等学校学报

石油化工高等学校学报 ›› 2015, Vol. 28 ›› Issue (3): 12-16.DOI: 10.3969/j.issn.1006-396X.2015.03.003

• 石油化工 • 上一篇    下一篇

锂基硅酸盐吸附剂的合成及性能研究

孙成志1,  杨丽霞1,  左臣盛1,  李明丽1,  任永峰2,  刘 丹3,  刘道胜1   

  1. ( 1. 辽宁石油化工大学化学化工与环境学部, 辽宁抚顺1 1 3 0 0 1; 2. 朝阳市环境科学研究院, 辽宁朝阳1 2 2 5 0 0;
    3. 天津工业大学环境与化学工程学院, 天津3 0 0 3 8 9)
  • 收稿日期:2014-10-11 修回日期:2015-03-18 出版日期:2015-06-25 发布日期:2015-06-23
  • 通讯作者: 刘道胜( 1 9 7 6 - ) , 男, 博士, 副教授, 从事多孔材料及其表面物理化学研究; E - m a i l : d s l i u 0 5@1 2 6. c o m。
  • 作者简介:孙成志( 1 9 8 7 - ) , 男, 硕士研究生, 从事无机功能材料方向研究; E - m a i l : c z s u n 1 1@1 6 3. c o m。
  • 基金资助:
     国家自然科学基金项目 ( 2 1 1 0 3 0 7 7) ; 新世纪优秀人才支持计划( NC E T - 1 1 - 1 0 1 1) 。

Preparation and Performance Investigation of  LithiumBased Silicate Materials

  1. 1.Division of Chemistry, Chemical Engineering and Environment, Liaoning Shihua University, Fushun Liaoning 113001, [ＪＰ] China; 2.Chaoyang Research Institute of Environmental Sciences, Chaoyang Liaoning 122500, China； 3.Institute of Environment and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300389, China
  • Received:2014-10-11 Revised:2015-03-18 Published:2015-06-25 Online:2015-06-23

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摘要： 采用高温固相合成法和沉淀法分别制备了高温CO2 吸附剂正硅酸锂( L i 4S i O4) , 利用 X射线粉末衍射仪( XR D) 和扫描电镜( S EM) 对吸附剂进行表征, 化学吸附仪测试CO2  吸附/脱附性能, 研究了合成方法、 焙烧温度、 锂硅物质的量比和不同硅源对吸附剂的影响。实验结果表明, 在7 5 0℃下沉淀法制备的吸附剂比固相法合成的颗粒分布均匀, 经过6次 CO2( VCO 2/ VH e=1∶5) 吸附 - 解吸循环后, 以S i O2 - I I为硅源的沉淀法吸附剂吸附量由 1 3. 3 8%降为9. 9 2%, 解吸量由1 1. 7 4%降为8. 5 2%; 以S i O2 - I为硅源的沉淀法吸附剂的吸附量、 解吸量大约下降 2. 6 1%、 2. 3 9%, 固相法吸附剂的吸附量、 解吸量分别下降1. 8 5%、 1. 4 2%。

关键词: 正硅酸锂, 二氧化碳, 高温固相法, 沉淀法

Abstract: The Lithiumbased sorbents for high temperature CO2 capture were prepared through solidstate reaction method and precipitation method, which were characterized by Xray diffraction(XRD) and scanning electronic microscopy(SEM). The CO2 absorption performance was evaluated by the chemical BET absorption(CHEMBET) method and the impact factors (including synthetic method, calcination temperature, molar ratio of Li to Si and different silica sources) were studied. The results indicated that the particle size of the adsorbents synthesized by the precipitation method distributed more homogeneous than that of the adsorbents synthesized by the solidstate reaction method at 750 ℃. Meanwhile, BET surface area of former was larger than that of latter. After six times CO2 (carbon dioxide to helium in a volume ratio of 1∶5) recycles, adsorption capacity of precipitationmethod adsorbents using SiO2II reduced to 9.92% from 13.38%, and desorption amount decreased from 11.74% to 8.52%. However, the amounts of adsorption and desorption of precipitationmethod adsorbents using SiO2I were reduced by 2.61% and 2.39%, those of solidstatemethod adsorbents reduced by 1.85% and 1.42%. 

Key words: Lithiumbased sorbent,    ,  Carbon dioxide,    ,  Solidstate reaction method,    ,  Precipitation method

引用本文

孙成志, 杨丽霞, 左臣盛. 锂基硅酸盐吸附剂的合成及性能研究[J]. 石油化工高等学校学报, 2015, 28(3): 12-16.

Sun ChengzhiYang Lixia Zuo Chensheng,e tal. Preparation and Performance Investigation of  LithiumBased Silicate Materials [J]. Journal of Petrochemical Universities, 2015, 28(3): 12-16.

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