酸改性凹凸棒土的制备及其脱汞性能  

Preparation of Acid Modified Attapulgite and Its Performance of Mercury Removal

作　　者：施冬雷 乔仁静 许琦[1] 

机构地区：[1]盐城工学院化学与生物工程学院,江苏盐城224051 [2]常州大学石油化工学院,江苏常州213164

出　　处：《合成化学》2015年第8期720-724,共5页Chinese Journal of Synthetic Chemistry

基　　金：江苏省新型环保重点实验室开放课题基金资助项目(AE201026);盐城工学院创新基金资助项目(YKB201106)

摘　　要：以凹凸棒土为原料,分别经盐酸、硫酸和硝酸改性处理制得酸改性凹凸棒土,其结构经IR,X-射线衍射(XRD)和透射电子显微镜(TEM)表征。在模拟烟气条件下考查了其汞脱除能力,研究了温度、浓度和寿命对脱汞性能的影响。实验结果表明:经4 mol·L-1盐酸改性凹凸棒土在180℃时汞脱除能力最好,且在6 h内脱汞性能保持稳定。Attapulgite was modified with hydrochloric acid, sulfuric acid and nitric acid, respective- ly, to obtain modified attapulgite. The structures were characterized by IR, X-ray diffraction（XRD） and transmission electron microscopy（TEM）. The activities of mercury removal in coal-fired flue gas were investigated, and the effects of experimental temperature, concentration of acid and life of adsor- bents were studied. The results showed that the attapulgite modified with 4 tool · L^-1 hydrochloric acid exhibited the best activity for mercury removal at 180℃, and keep stable performance within 6 h.

关 键 词：凹凸棒土 酸改性 制备 燃煤烟气 脱汞 

分 类 号：O611.4[理学—无机化学] O643.3[理学—化学]