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.
出处
《合成化学》
CAS
CSCD
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)
关键词
凹凸棒土
酸改性
制备
燃煤烟气
脱汞
attapulgite
acid modification
preparation
coal-fired flue gas
mercury removal
