添加稻壳木质素/SiO_2复合物对煤沥青成焦行为的影响  

Effect of lignin/silica hybrid addition on the coking behavior of coal-tar pitch

作　　者：黄蕴青[1] 林起浪[1] 马志超[1] 唐海燕[1] 

机构地区：[1]福州大学材料科学与工程学院,福建福州350108

出　　处：《煤炭学报》2012年第2期336-339,共4页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50802015);福建省自然科学基金资助项目(2010J01280)

摘　　要：采用TGA研究添加稻壳木质素/SiO2复合物(LSH)前后煤沥青的热行为;采用偏光显微镜和XRD研究稻壳木质素/SiO2复合物对煤沥青焦化产物的光学组织和微晶结构的影响;采用SEM和EDS研究稻壳木质素/SiO2复合物对煤沥青焦化产物结构的影响。研究表明:稻壳木质素/SiO2复合物的添加不仅提高煤沥青的耐热性能,而且显著影响煤沥青焦化产物的光学组织和结构。The thermal behavior of coal-tar pitch with different lignin/silica hybrid （LSH） contents was studied by thermogravimetric analysis （TGA）. The optical texture and micro-crystal structure of resultant cokes from carbonization of the coal-tar pitch with different LSH contents were characterized by reflected polarized light microscopy and X-ray diffraction（XRD） , respectively. In addition, the microstructure of resultant cokes was investigated using scanning elec- tron microscopy（ SEM） and energy dispersive spectroscopy（EDS）. The results show that the thermal stability of coal- tar pitch increases with the addition of LSH. Moreover, the addition of LSH markedly changes the optical texture and microstructure of resultant cokes.

关 键 词：稻壳木质素 SIO2 煤沥青 光学组织 焦化 

分 类 号：TQ522.65[化学工程—煤化学工程]