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时间:2020-04-05
《微波-浸渍联合改性活性炭对CS2吸附性能的研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、石油化工·1348·PETROCHEMICALTECHN0L0GY2011年第40卷第12期。鹋5环境与化-rl>!气/微波一浸渍联合改性活性炭对CS2吸附性能的研究田生友,梅华,吴文艳(南京工业大学化学化工学院,江苏南京210009)[摘要]以活性炭为原料,采用微波正交实验考察了微波辐射功率、辐射时间、活性炭处理量三因素微波改性活性炭对吸附cs,性能的影响;用过渡金属溶液和氨水分别浸渍微波改性后的活性炭,考察了微波一浸渍联合改性活性炭对吸附cs,的影响。实验结果表明,微波改性的最优实验条件为微波辐射功率400W、辐射时间3min、活性
2、炭处理量5g;在此条件下,微波改性后的活性炭(AC1)吸附cs2的静、动态吸附量分别为0.564,0.542g;用浓度为0.005mol/L的Fe(NO3)3溶液、0.020mol/L的Cu(NO),溶液、质量分数30%的氨水分别浸渍AC1后,3种联合改性活性炭对cs2静、动态吸附量较原活性炭均有所提高,其中氨水一微波联合改性的活性炭对cs2吸附性能最好,对cs2的静、动态吸附量分别为0.587,0.572g/g。BET,SEM,FTIR表征结果显示,活性炭改性后碱性基团的数量增多,微孔的数量增大。[关键词]活性炭;微波辐射;吸附;二硫
3、化碳[文章编号]1000—8144(2011)12—1348—07[中图分类号]TE624.5[文献标识码]AAdsorbilityofCS2onModifiedActivatedCarbonbyImpregnation-MicrowaveTianShengyou,MeiHua,WuWenyan(DepartmentofChemicalEngineering,NanjingUniversityofTechnology,NanjingJiangsu210009,China)[Abstract]Activatedcarbon(AC)wasm
4、odifiedthroughmicrowaveradiationandthenimpregnationwithtransitionmetal(Fe”,Cu“)andammoniawitho~hogonalexperimentaldesign.ThemodifiedactivatedcarbonwasusedinadsorbingCS2.Theeffectsofmicrowavepower,radiationtimeandactivatedcarbondosageinthemodificationonadsorptionofCS2onth
5、emodifiedactivatedcarbonwereinvestigated.Undertheoptimalconditionsofmicrowavepower400W,radiationtime3minandACdosage5g,theadsorptivecapacityoftheactivatedcarbon(AC1)modifiedonlybymicrowaveforCS2instablestateanddynamicstateincreasedto0.564and0.542g/g,respectively.WhenAC1wa
6、simprovedbyimpregnationwith0.005mol/LFe(NO3)3solution,0.020mol/LCu(NO3)2solutionor30%(W)ammoniasolution,itsadsorptivecapacityforCS2washeightened,amongwhich,theadsorptivecapacityofAC1obt~nedbyimpregnationwith30%(W)amoniasolutionwasthehighest,0.587g/ginthestablestateand0.5
7、72g/gindynamicstate.ThemodifiedactivatedcarbonwascharacterizedbymeansofBET,SEMandFTIR.Theresultsshowedthatboththenumbersofthesurfacebasicgroupsandthemicroporesofthemodifiedactivatedcarbonincreased.[Keywords]activatedcarbon;microwaveradiation;adsorption;carbondisulfidecs:
8、是一种典型的工业毒物,广泛地存在于水的现实意义。煤气、天然气以及生产黏胶纤维、人造棉、橡胶等的活性炭因具有高比表面积和发达的孔隙结构,工业尾气中。微量CS:会使许多催化剂(如合成甲[收稿日期]2011—06
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