以红枣核为原料,采用 ZnCl2活化法,研究了活化温度、活化时间以及浸渍比等工艺参数对活性炭结构性能与表面化学性能的影响.采用低温 N2吸附-脱附以及元素分析对活性炭结构进行表征,采用Boehm 滴定、pH ZPG 、FT-IR 等手段对活性炭表面性能进行表征.研究结果表明,当浸渍比为0．8,活化温度为700℃,活化时间为60 min 时,活性炭的微孔结构较发达,活性炭 BET 比表面积为1031 m2/g,总孔体积为0．504 cm3/g,平均孔径为1．95 nm,零电荷点(pH ZPG )为7．01,活性炭的收率为41．6％.
Activated carbons were prepared by ZnCl2 activation from red jujube-stone.The effect of activation temperature,activation time and impregnation ratio on the textural properties and surface chemical properties were studied.The textural properties of activated carbon were characterized by nitrogen adsorption and proxi-mate-ultimate analysis,and the surface chemical properties were characterized by Boehm’s titration,pH ZPG , FT-IR spectra.The optimal activation conditions were determined as:activation temperature 700 ℃,activation time 60 min and ZnCl2/jujube stone ratio 0.8,under which BET surface area of 1 031 m2/g,pore volume of 0.504 cm3/g,pore size diameter of 1.95 nm,pH ZPG of 7.01,and the yield of 41.6% could be reached.
参考文献
| [1] | Andre L. Cazetta;Alexandra M.M. Vargas;Eurica M. Nogami .NaOH-activated carbon of high surface area produced from coconut shell: Kinetics and equilibrium studies from the methylene blue adsorption[J].Chemical engineering journal,2011(1):117-125. |
| [2] | N. Ferrera-Lorenzo;E. Fuente;I. Suarez-Ruiz.KOH activated carbon from conventional and microwave heating system of a macroalgae waste from the Agar-Agar industry[J].Fuel Processing Technology,2014:25-31. |
| [3] | Isilay Ozdemir;Mehmet Sahin;Ramazan Orhan.Preparation and characterization of activated carbon from grape stalk by zinc chloride activation[J].Fuel Processing Technology,2014:200-206. |
| [4] | 马承愚,毛宇,徐鹏飞,刘建奇,宋新山.KOH/NaOH活化法辣椒秸秆制备高表面积活性炭与表征[J].功能材料,2013(05):704-708. |
| [5] | 马承愚,熊慧珍,宋新山.ZnCl2活化茄子秸秆制备活性炭及表征[J].功能材料,2012(03):342-345. |
| [6] | 林冠烽,蒋剑春,吴开金,孙康.醋酸乙烯载体竹活性炭的磷酸法制备与性能表征[J].新型炭材料,2013(06):461-466. |
| [7] | Ma Chengyu;Yang Chao;Gulgina et al.Preparation of acti-vated carbon by almond shell with phosphoric acid as activa-ting agent and its adsorption to Cr(Ⅵ)[J].Chinese Journal of Environmental Engineering,2014(8):3223-3227. |
| [8] | YANG JiLiang,FANG Fang,ZHOU JianBin.Effect of microstructure and surface chemistry in liquid-phase adsorptive nicotine by almond-shell-based activated carbon[J].科学通报（英文版）,2013(30):3715-3720. |
| [9] | 王力臻,闻红丽,孙淑敏,张勇.以核桃壳为碳源微波加热制备介孔活性炭?[J].功能材料,2014(18):18144-18147,18152. |
| [10] | 王琳琳,龙柳锦,陈小鹏,梁杰珍,唐海梅,杨金银.油茶壳基中孔活性炭的表征与孔结构研究[J].高校化学工程学报,2013(02):297-303. |
| [11] | Qin Chong;Chen Yao;Gao Jianmin .Manufacture and characterization of activated carbon from marigold straw(Tagetes erecta L)by H 3 PO 4 chemical activation[J].Materials Letters,2014,135:123-126. |
| [12] | Dilek Angin .Production and characterization of activated carbon from sour cherry stones by zinc chloride[J].Fuel,2014(Jan.):804-811. |
| [13] | Marielen C. Ribas;Matthew A. Adebayo;Lizie D.T. Prola.Comparison of a homemade cocoa shell activated carbon with commercial activated carbon for the removal of reactive violet 5 dye from aqueous solutions[J].Chemical engineering journal,2014:315-326. |
| [14] | Yang, KB;Peng, JH;Srinivasakannan, C;Zhang, LB;Xia, HY;Duan, XH .Preparation of high surface area activated carbon from coconut shells using microwave heating[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,2010(15):6163-6169. |
| [15] | Maldhure A V;Ekhe J D .Preparation and characteriza-tions of microwave assisted activated carbons from indus-trial waste lignin for Cu(Ⅱ)sorption[J].Chemical Engi-neering Journal,2011,168(3):1103-1111. |
| [16] | E. Sabio;E. Gonzalez;J.F. Gonzalez .Thermal regeneration of activated carbon saturated with p-nitrophenol[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(11):2285-2293. |
| [17] | Hui Deng;Genlin Zhang;Xiaolin Xu;Guanghui Tao;Jiulei Dai .Optimization of preparation of activated carbon from cotton stalk by microwave assisted phosphoric acid-chemical activation[J].Journal of hazardous materials,2010(1/3):217-224. |
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