摘要
以香蒲为原料制备生物炭(Biochar),并用不同试剂进行活化.活化前的Biochar比表面积和孔体积很小,分别为1.71 m^(2)/g和0.00421 cm^(3)/g,而活化后的Biochar比表面积和孔容均增大,其中经碳酸钠(Na_(2)CO_(3))活化后的Biochar比表面积和孔容最大.研究了Na_(2)CO_(3)与Biochar的质量比对其活化的影响,确定了Na_(2)CO_(3)/Biochar最佳质量比为3∶1条件下,得到的样品Biochar-Na_(2)CO_(3)-3具有最优的表面积和孔容,分别为624 m^(2)/g和0.211 cm^(3)/g,并具有优异的挥发性有机化合物(VOCs)吸附性能,其正己烷、甲苯和92号汽油的静态吸附容量分别为1.03,0.814和0.751 g/g,正己烷和甲苯的动态吸附容量分别为1.00和0.796 g/g,且吸附稳定性相对较高,优于商业用活性炭(AC)和硅胶(SG).
Biochar was achieved by using cattail as raw material and activated with different agents.The specific surface area and pore volume of biochar before activation was very small,1.71 m^(2)/g and 0.00421 cm^(3)/g,respectively,and they were greatly increased after activation.The biochar activated by Na_(2)CO_(3) has the best surface area and pore volume.At the same time,the effects of different mass ratios of Na_(2)CO_(3) and Biochar on the activation of Biochar were studied,and the optimal mass ratio of activation was determined.When mass ratio of Na_(2)CO_(3)/Biochar is 3∶1,the synthesized dample(Biochar-Na_(2)CO_(3)-3)has the biggest specific surface area and pore volume(624 m2/g and 0.211 cm3/g),which has excellent adsorption performance of volatile organic compounds(VOCs).The static n-hexane,toluene and No.92 gasoline adsorption capacities of Biochar-Na_(2)CO_(3)-3 are 1.03,0.814 and 0.751 g/g,respectively.The dynamic n-hexane and toluene adsorption capacities of Biochar-Na_(2)CO_(3)-3 are 1.00 and 0.796 g/g,respectively.The adsorption performance is stable,which is better than the commercial activated carbon(AC)and silica gel(SG).
作者
王红宁
黄丽
清江
马腾洲
蒋伟
黄维秋
陈若愚
WANG Hongning;HUANG Li;QING Jiang;MA Tengzhou;JIANG Wei;HUANG Weiqiu;CHEN Ruoyu(Jiangsu Province Key Laboratory of Fine Petrochemical Engineering,Changzhou University,Changzhou 213164,China;Jiangsu Key Laboratory of Oil and Gas Storage and Transport Technology,Changzhou University,Changzhou 213016,China;Technical Center for Industrial Product and Raw Material Inspection and Testing,Shanghai Customs,Shanghai 200135,China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2022年第4期14-23,共10页
Chemical Journal of Chinese Universities
基金
国家重点研发计划项目(批准号:2019YFC0810905)
国家自然科学基金(批准号:52174058)
海关总署课题(批准号:200HK251)资助.
关键词
生物炭
活化
挥发性有机化合物
吸附-脱吸
稳定性
Biochar
Activation
Volatile organic compoundes(VOCs)
Adsorption-desorption
Stability
