| Zr掺杂对SBA-15上负载胺分散性及CO2吸附特性的影响 |
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| 引用本文： | 周永言, 刘洁, 唐念, 余波, 杨梓睿, 李丽, 岑望来. Zr掺杂对SBA-15上负载胺分散性及CO2吸附特性的影响[J]. 环境工程学报, 2017, 11(3): 1707-1712. doi: 10.12030/j.cjee.201511103 |
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| 作者姓名： | 周永言 刘洁 唐念 余波 杨梓睿 李丽 岑望来 |
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| 作者单位： | 1.广东电网有限责任公司电力科学研究院, 广州 510080; 2.成都信息工程大学资源环境学院, 成都 610225; 3.四川大学新能源与低碳技术研究院, 成都 610207 |
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| 基金项目： | 四川省科技计划项目（2014JY0178） 成都信息工程大学2014年第一批校引进人才项目（KYTZ201411） |
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| 摘 要： | 针对胺改性复合吸附剂稳定性差、负载胺分散性欠佳的问题，对介孔SBA-15进行原位Zr掺杂改性，考察了载体材料表面酸性对胺分散状态及其CO2吸附性能的影响。研究表明：载体表面酸性的增强可改善聚合胺在其孔道结构中的空间分散构型，使其暴露出更多的活性位点，由此低PEI负载量下复合吸附剂（30PEI/ZrSBA-15）对CO2的吸附容量均在99 mg·g-1以上，超过50PEI/SBA-15在优选温度75℃下的吸附容量89.8 mg·g-1；且表面酸性位与端位氨基间的结合也增进了复合吸附剂的热稳定性与循环稳定性，3次循环测试后样品的CO2吸附容量没有下降。
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| 关 键 词： | CO2捕集 SBA-15 Zr掺杂 复合吸附剂 |
| 收稿时间： | 2016-01-05 |
Dispersion state of loaded polyethylenimine on Zr incorporated SBA-15 and its CO2 adsorption properties |
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| ZHOU Yongyan, LIU Jie, TANG Nian, YU Bo, YANG Zirui, LI Li, CEN Wanglai. Dispersion state of loaded polyethylenimine on Zr incorporated SBA-15 and its CO2 adsorption properties[J]. Chinese Journal of Environmental Engineering, 2017, 11(3): 1707-1712. doi: 10.12030/j.cjee.201511103 |
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| Authors: | ZHOU Yongyan LIU Jie TANG Nian YU Bo YANG Zirui LI Li CEN Wanglai |
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| Affiliation: | 1.Electric Power Research Institute of Guangdong Power Grid Corporation, Guanzhou 510080, China; 2.College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, China; 3.Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, China |
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| Abstract: | A polyethylenimine (PEI)-mesoporous silica composite adsorbent was formulated and synthesized via wet impregnation. The prepared samples were characterized by BET-BJH,NH3-TPD,FTIR spectroscopy,and nitrogen content analysis,among other techniques. The results showed that the acid sites introduced through Zr incorporation modified the spatial dispersion configuration of the loaded PEI,exposing more active sites. Thus,the CO2 adsorption capacity of 30PEI/ZrSBA-15 was above 99 mg·g-1 at different testing temperatures,exceeding 89.8 mg·g-1 on 50PEI/SBA-15 at the optimum temperature of 75℃. Furthermore,the interaction between the acid sites and terminal amino groups could also improve the thermal stability and adsorption-desorption cyclic stability. The CO2 adsorption capacity did not decline after three cyclic processes. |
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| Keywords: | CO2 capture SBA-15 Zr incorporation composite adsorbents |
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