孔振凯1,
王际童1,
乔文明1,2,
凌立成1
1.华东理工大学化学工程联合国家重点实验室，上海 200237
2.华东理工大学特种功能高分子材料及相关技术教育部重点实验室，上海200237
基金项目: 国家自然科学基金资助项目 (U1710252, 21506061)
中国科协青年人才托举工程和上海市青年科技启明星计划 (17QB1401700)
Formaldehyde adsorption performance of KMnO4 modified mesoporous carbon spheres
JIANG Xinnan1,,KONG Zhenkai1,
WANG Jitong1,
QIAO Wenming1,2,
LING Licheng1
1.State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
2.Key Laboratory of Specially Functional Polymeric Materials and Related Technology, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
-->
摘要
HTML全文
图
参考文献
相关文章
施引文献
资源附件
访问统计
摘要:采用球形中孔炭为载体，通过浸渍法担载高锰酸钾（KMnO4）制备高容量甲醛吸附剂。通过低温氮气吸附法、扫描电镜(SEM)、X射线光电子能谱(XPS)表征了球形中孔炭的孔结构及表面化学，并采用固定床测试了相应的球形中孔炭的动态甲醛吸附性能。实验结果表明：经过KMnO4浸渍改性后，球形中孔炭保持良好的球形度，并保留一定的比表面积和孔容，有利于甲醛的扩散以及甲醛与吸附活性位的接触；同时，表面C—O、C=O等含氧官能团数量增加，有效提高了甲醛的吸附性能。在KMnO4浓度为30%时性能最佳，吸附穿透容量和饱和容量分别为30.55 mg·g-1和66.04 mg·g-1，是未改性球形中孔炭的5.2倍和3.4倍。因此，KMnO4改性是提升球形中孔炭甲醛吸附性能的有效手段。
关键词: 球形中孔炭/
甲醛/
吸附/
改性
Abstract:Mesoporous carbon spheres (MCS) was prepared and modified with potassium permanganate (KMnO4) solution by impregnation to achieve formaldehyde (HCHO) adsorbent with high adsorption capacity. The porous structure, morphology and surface chemistry of the samples were characterized by N2 adsorption (77 K), scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS), respectively. And the performance of HCHO adsorption was tested in a fixed-bed reactor. Results indicated that modified MCS still provided a good sphericity and maintained the considerable porosity and the accessibility of interfacial area, being favorable for HCHO diffusion and adsorption. Meanwhile, the number of functional groups such as C—O and C=O on the surface of modified MCS increased, which effectively enhanced the adsorption performance to HCHO. The modified MCS with 30% KMnO4 gave the highest adsorption capacity with the breakthrough capacity of 30.55 mg·g-1 and the saturation capacity of 66.04 mg·g-1, which are 4.2 and 2.4 times higher than those of MCS without KMnO4 treatment. So, KMnO4 modification is a promising method to promote the adsorption performance of MCS to HCHO.
Key words:mesoporous carbon spheres/
formaldehyde/
adsorption/
modification.
| [1] | 王嵬，杨立平，仪淑敏，等. 9种氨基酸对甲醛捕获能力的研究[J]. 氨基酸和生物资源,2015,37(2):10-13 |
| [2] | ASHMORE M R, DIMITROULOPOULOU C.Personal exposure of children to air pollution[J].Atmospheric Environment,2009,43(1):128-41. |
| [3] | COLLINS J J, NESS R, TYL R W, et al.A review of adverse pregnancy outcomes and formaldehyde exposure in human and animal studies[J].Regulatory Toxicology and Pharmacology,2001,34(1):17-34 10.1006/rtph.2001.1486 |
| [4] | LI J, LI Z, LIU B, et al.Effect of relative humidity on adsorption of formaldehyde on modified activated carbons[J].Chinese Journal of Chemical Engineering,2008,16(6):871-875 10.1016/S1004-9541(09)60008-2 |
| [5] | SRISUDA S, VIROTE B.Adsorption of formaldehyde vapor by amine-functionalized mesoporous silica materials[J].Journal of Environmental Sciences,2008,20(3):379-384 10.1016/S1001-0742(08)60059-5 |
| [6] | PEI J J, ZHANG S J S.On the performance and mechanisms of formaldehyde removal by chemi-sorbents[J].Chemical Engineering Journal,2011,167(1):59-66 10.1016/j.cej.2010.11.106 |
| [7] | 李慧芳，徐海，赵勤，等. 几种分子筛对甲醛气体吸附性能的研究[J]. 硅酸盐通报,2014,33(1):122-126 |
| [8] | WEN Q B, LI C T, CAI Z H, et al.Study on activated carbon derived from sewage sludge for adsorption of gaseous formaldehyde[J].Bioresource Technology,2011,102(2):942-947. 10.1016/j.biortech.2010.09.042 |
| [9] | LASZLO K.Characterization and adsorption properties of polymer-based microporous carbons with different surface chemistry[J].Microporous and Mesoporous Materials, 2005,80(1/2/3):205-211 |
| [10] | KUMAGAI S, SASAKI K, SHIMIZU Y, et al.Formaldehyde and acetaldehyde adsorption properties of heat-treated rice husks[J].Separation and Purification Technology,2008,61(3):398-403 10.1016/j.seppur.2007.12.006 |
| [11] | MA C, LI X, ZHU T.Removal of low-concentration formaldehyde in air by adsorption on activated carbon modified by hexamethylene diamine[J].Carbon,2011,49(8):2873-2875 |
| [12] | 荣海琴，郑经堂. 改性PAN-ACFs对甲醛吸附性能的初步研究[J]. 新型炭材料,2001,16(1):44-48 |
| [13] | 孙康，蒋剑春，卢辛成，等. 表面掺氮活性炭的制备及其甲醛吸附性能研究[J]. 林产化学与工业,2014,22(4):77-82 |
| [14] | 王彬，单丽丽，周小舟. 硝酸改性活性炭对甲醛吸附性能影响的研究[J]. 绿色科技,2012(12):57-59 |
| [15] | 刘耀源，邹长武，侯天瑶，等.H2O2 /H2SO4改性玉米秸秆活性炭对甲醛吸附性能的研究[J]. 湖北农业科学,2014,53(19):4583-4586 |
| [16] | 姜良艳，周仕学，王文超，等. 活性炭负载锰氧化物用于吸附甲醛[J]. 环境科学学报,2008,28(2):337-341 |
| [17] | 何萌，袁琳，曲可琪，等. 高锰酸钾改性活性炭对甲醛吸附性能的研究[J]. 广州化工,2017,45(14):93-95 |
| [18] | 马国斌. 负载MnO2改性活性炭工艺对甲醛吸附去除的效能[J]. 净水技术,2015,45(14):32-36 |
| [19] | 张川，王际童，李旭，等. 中孔炭的水玻璃模板法制备、结构调控及球形功能化[J]. 无机材料学报,2015,30(8):848-854 |
| [20] | WANG J T, CHEN Q J, LIU X J, et al.Hard-templating synthesis of mesoporous carbon spheres with controlled particle size and mesoporous structure for enzyme immobilization[J].Materials Chemistry and Physics,2011,129(3):1035-1041 10.1016/j.matchemphys.2011.05.085 |
| [21] | WAGNER C D, RIGGS W M, DAVIS L E, et al.Handbook of X-Ray Photoelectron Spectroscopy[M].Perkin-Elmer，Eden Prairie,1979 |
| [22] | LEE K J, SHIRATORI N, LEE G H, et al.Activated carbon nanofiber produced from electrospun polyacrylonitrile nanofiber as a highly efficient formaldehyde adsorbent[J].Carbon,2010,48(15):4248-4255 10.1016/j.carbon.2010.07.034 |
| [23] | SONG Y, QIAO, W M, YOON S H, et al.Removal of formaldehyde at low concentration using various activated carbon fibers[J].Journal of Applied Polymer Science,2007,106(4):2151-2157 10.1002/app.26368 |
Turn off MathJax -->
点击查看大图计量
文章访问数:1806
HTML全文浏览数:1292
PDF下载数:417
施引文献:0
出版历程
刊出日期:2018-06-18
-->
高锰酸钾改性球形中孔炭的甲醛吸附性能
蒋昕楠1,,孔振凯1,
王际童1,
乔文明1,2,
凌立成1
1.华东理工大学化学工程联合国家重点实验室，上海 200237
2.华东理工大学特种功能高分子材料及相关技术教育部重点实验室，上海200237
基金项目: 国家自然科学基金资助项目 (U1710252, 21506061) 中国科协青年人才托举工程和上海市青年科技启明星计划 (17QB1401700)
关键词: 球形中孔炭/
甲醛/
吸附/
改性
摘要:采用球形中孔炭为载体，通过浸渍法担载高锰酸钾（KMnO4）制备高容量甲醛吸附剂。通过低温氮气吸附法、扫描电镜(SEM)、X射线光电子能谱(XPS)表征了球形中孔炭的孔结构及表面化学，并采用固定床测试了相应的球形中孔炭的动态甲醛吸附性能。实验结果表明：经过KMnO4浸渍改性后，球形中孔炭保持良好的球形度，并保留一定的比表面积和孔容，有利于甲醛的扩散以及甲醛与吸附活性位的接触；同时，表面C—O、C=O等含氧官能团数量增加，有效提高了甲醛的吸附性能。在KMnO4浓度为30%时性能最佳，吸附穿透容量和饱和容量分别为30.55 mg·g-1和66.04 mg·g-1，是未改性球形中孔炭的5.2倍和3.4倍。因此，KMnO4改性是提升球形中孔炭甲醛吸附性能的有效手段。
English Abstract
Formaldehyde adsorption performance of KMnO4 modified mesoporous carbon spheres
JIANG Xinnan1,,KONG Zhenkai1,
WANG Jitong1,
QIAO Wenming1,2,
LING Licheng1
1.State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
2.Key Laboratory of Specially Functional Polymeric Materials and Related Technology, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
Keywords: mesoporous carbon spheres/
formaldehyde/
adsorption/
modification
Abstract:Mesoporous carbon spheres (MCS) was prepared and modified with potassium permanganate (KMnO4) solution by impregnation to achieve formaldehyde (HCHO) adsorbent with high adsorption capacity. The porous structure, morphology and surface chemistry of the samples were characterized by N2 adsorption (77 K), scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS), respectively. And the performance of HCHO adsorption was tested in a fixed-bed reactor. Results indicated that modified MCS still provided a good sphericity and maintained the considerable porosity and the accessibility of interfacial area, being favorable for HCHO diffusion and adsorption. Meanwhile, the number of functional groups such as C—O and C=O on the surface of modified MCS increased, which effectively enhanced the adsorption performance to HCHO. The modified MCS with 30% KMnO4 gave the highest adsorption capacity with the breakthrough capacity of 30.55 mg·g-1 and the saturation capacity of 66.04 mg·g-1, which are 4.2 and 2.4 times higher than those of MCS without KMnO4 treatment. So, KMnO4 modification is a promising method to promote the adsorption performance of MCS to HCHO.
