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.%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／SiO：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。
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