CAJ | 학술논문

煤中含氧官能团含量高是造成褐煤具有强亲水性的主要原因,表面活性剂通过亲水基团端吸附作用于煤表面的含氧亲水基团能够改变其表面润湿性。通过双氧水氧化的方法改变煤中含氧官能团含量,考察了含氧官能团含量对阳离子表面活性剂十六烷基三甲基溴化胺(CTAB)吸附量的影响和吸附 CTAB 前后煤样的润湿热变化。试验结果表明,CTAB吸附量随着含氧官能团含量的增加而增大；煤表面的亲水性随着吸附 CTAB 量的增加而下降,含氧官能团含量高的氧化煤吸附 CTAB 对降低其表面亲水性作用较原煤显著；CTAB吸附量过大会在煤表面形成多层吸附,使得煤表面的亲水性有所增加。
매중함양관능단함량고시조성갈매구유강친수성적주요원인,표면활성제통과친수기단단흡부작용우매표면적함양친수기단능구개변기표면윤습성。통과쌍양수양화적방법개변매중함양관능단함량,고찰료함양관능단함량대양리자표면활성제십륙완기삼갑기추화알(CTAB)흡부량적영향화흡부 CTAB 전후매양적윤습열변화。시험결과표명,CTAB흡부량수착함양관능단함량적증가이증대；매표면적친수성수착흡부 CTAB 량적증가이하강,함양관능단함량고적양화매흡부 CTAB 대강저기표면친수성작용교원매현저；CTAB흡부량과대회재매표면형성다층흡부,사득매표면적친수성유소증가。
High oxygen-containing functional group content in coal is primary cause of super-hydrophilic of lignite,hydrophilic groups of the surfactant can absorb oxygen-containing hydro-philic groups in the surface of coal,which changes the surface wettability of coal. Oxidation method with hydrogen peroxide was adopted to change the oxygen-containing functional group content,and the effects of oxygen-containing functional group content on adsorbing capacity of cationic surfactant CTAB and the change of heat of wetting before and after adsorbing CTAB were investigated. The test results indicated that the adsorbing capacity of CTAB increased with increasing of the oxygen-containing functional group content,and the hydrophilic of coal surface improved with increasing of the adsorbing capacity of CTAB,and the hydrophilic decreasing effect of oxidized coal with high oxygen-containing functional group content was more obvious than the effect of raw coal. Excessive adsorbing capacity of CTAB could make multilayer adsorp-tion on the surface of coal,which could improve the hydrophilic of coal surface.