CAJ | 학술논문

为提高腐植酸的亲水性能，对褐煤腐植酸进行磺化改性。以 Na2 SO3为磺化剂，以磺化度为考察指标，通过单因素实验和正交实验研究了磺化温度、磺化剂固液比、磺化时间对褐煤磺化腐植酸磺化度的影响，得到褐煤磺化腐植酸最佳制备条件，并通过红外光谱分析和热重分析对褐煤磺化腐植酸性能进行表征。结果表明：磺化温度对褐煤磺化腐植酸磺化度的影响最大，其次为磺化时间，磺化剂固液比影响较小。在磺化温度50℃，磺化剂固液比2∶20，磺化时间90 min 条件下制备的褐煤磺化腐植酸磺化度为17.72％。红外光谱表明：褐煤磺化腐植酸含有苯环、羧基、羟基、酚羟基，磺酸基团明显增多，褐煤腐植酸磺化改性成功。热重分析表明：褐煤磺化腐植酸低于200℃时稳定，大于200℃时发生裂解反应；小于330℃裂解反应为吸热过程，大于330℃为放热过程。
위제고부식산적친수성능，대갈매부식산진행광화개성。이 Na2 SO3위광화제，이광화도위고찰지표，통과단인소실험화정교실험연구료광화온도、광화제고액비、광화시간대갈매광화부식산광화도적영향，득도갈매광화부식산최가제비조건，병통과홍외광보분석화열중분석대갈매광화부식산성능진행표정。결과표명：광화온도대갈매광화부식산광화도적영향최대，기차위광화시간，광화제고액비영향교소。재광화온도50℃，광화제고액비2∶20，광화시간90 min 조건하제비적갈매광화부식산광화도위17.72％。홍외광보표명：갈매광화부식산함유분배、최기、간기、분간기，광산기단명현증다，갈매부식산광화개성성공。열중분석표명：갈매광화부식산저우200℃시은정，대우200℃시발생렬해반응；소우330℃렬해반응위흡열과정，대우330℃위방열과정。
In order to improve the hydrophilicity of humic acid,the lignite humic acid was modified by sulfonated method.Taking Na2 SO3 as sulfonatingagent,sulfonation degree as index,the influence of humic acid-sulfonating agent ratio,reaction time,temperature on acid sulfon-ation degree was studied through the single factor experiment and orthogonal design method.The authors got the optimum preparation condi-tion,meanwhile,characterized the humic acid through infrared spectrum analysis and thermogravimetric analysis ( TGA). The results showed that,the reaction temperature was the main influencing factor,followed by reaction time,humic acid- sulfonating agent ratio.When the sulfonating agent-humic acid ratio was 2 to 20,the sulfonation temperature was 50 ℃ ,the reaction time was 90 minutes,the sulfonation degree was 17.72%.The IR spectra showed that the modified humic acid contained benzene ring,carboxyl,hydroxyl,phenolic hydroxyl group.Its sulfo groups increased significantly.The TGA showed that,the sulfonatedhumic acid was stable when the temperature was lower than 200 ℃ ,while the temperature was higher than 200 ℃ ,the sulfonatedhumic acid began to deposit.When the temperature was lower than 330 ℃ ,the deposition was endothermic reaction,otherwise,the deposition was exothermic reaction.