高吸油量煅烧高岭土的制备与性能表征  

Preparation and characterization of calcinated kaolin clay with high oil absorption capacity

作　　者：石国亮[1,2] 李晓兰 侯春月 刘建红 吕存琴 赵玉英 郭雨[3] 张乾伟 韩陈西 常宏丽 SHI Guo-liang;LI Xiao-lan;HOU Chun-yue;LIU Jian-hong;LV Cun-qin;ZHAO Yu-ying;GUO Yu;ZHANG Qian-wei;HAN Chen-xi;CHANG Hong-li(Shanxi Provincial Key Laboratory for High Value Utilization of Coal Gangue,School of Chemical Engineering and Technology,Taiyuan University of Science and Technology,Taiyuan 030024,China;Shanxi Linxin Coal Coking Co.,Ltd.,Linfen 042500,China;College of Chemistry and Materials Engineering,Anhui Science and Technology University,Bengbu 233100,China;State Key Laboratory of Advanced Technology for Float Glass,Bengbu 233100,China)

机构地区：[1]太原科技大学化学工程与技术学院,煤矸石高值利用山西省重点实验室,山西太原030024 [2]山西蔺鑫煤焦化有限责任公司,山西临汾042500 [3]安徽科技学院化学与材料工程学院,安徽蚌埠233100 [4]浮法玻璃新技术国家重点实验室,安徽蚌埠233100

出　　处：《现代化工》2024年第6期129-133,139,共6页Modern Chemical Industry

基　　金：山西省重点研发计划项目(202102090301026);浮法玻璃新技术国家重点实验室开放基金(2020KF09)。

摘　　要：通过插层剂二甲基亚砜、接枝剂甲醇和剥离试剂十六烷基三甲基溴化铵协同超声震荡辅助作用,将层状煤系高岭土剥离为超细片状煤系高岭土。通过X射线衍射(XRD)、傅里叶红外(FT-IR)、N_(2)吸附-脱附及扫描电镜(SEM)与能谱分析(EDS)等技术手段对煤系高岭土进行表征。结果表明,其层间距由层状煤系高岭土的0.708 nm扩大到片状煤系高岭土的1.12 nm,内部孔隙增加,形成了裂隙形状的介孔且孔径分布均匀。煅烧高岭土较煤系高岭土的吸油性能大幅提升,其吸油量从60~73 g/100 g煤系高岭土增至70~79 g/100 g煅烧高岭土。整个制备工艺流程中无引入强酸强碱等腐蚀性物质,提供了一种环境友好型煅烧高岭土制备技术。Layered coal-series kaolin can be stripped into ultra-fine flake kaolin through the synergistic effect of dimethyl sulfoxide as intercalating agent,methanol as grafting agent,and cetyltrimethylammonium bromide as stripping reagent with the assistance of ultrasonic vibration.All samples are characterized by means of XRD,FT-IR,N_(2)adsorptiondesorption,SEM and EDS.The results indicate that after stripping and calcination,the inter-layer distance of kaolin is enlarged from 0.708 nm to 1.12 nm,and the porosity in the kaolin increases.Moreover,the mesopores with crack shapes are formed in uniform pore size distribution.The oil absorption capacity of calcinated kaolin clay increases to 70-79 g/(100 g),which is greater than 60-73 g/(100 g)of coal-series kaolin clay.No strong acid or base or other corrosive substances are needed in the whole synthesis process,representing an environmental-friendly preparation method for calcinated kaolin clay.

关 键 词：煤矸石 煅烧高岭土 吸油性能 制备 空隙率 

分 类 号：TQ174.9[化学工程—陶瓷工业]