作　　者： ;

机构地区： 河北师范大学化学与材料科学学院化学系

出　　处： 《现代化工》 2001年第2期33-35,共3页

摘　　要： 研究了造纸黑液木素稀硝酸氧化法制备活性氧化木素的适宜条件。结果表明 ,当磷酸含量为 4 0 % ,木素与稀硝酸的质量配比为 1∶1 0 ,可得到腐殖酸含量达 46 %的氧化木素。研究了氧化木素和氨化氧化木素对 3种磷酸钙的溶解性的影响 ,讨论并合理地解释了反应机理。 Optimal conditions for preparation of active lignin oxide by oxidizing black-liquor lignin with nitric acid were studied. The results showed that the yield of lignin oxide was up to 46% when the concentration of phosphoric acid was under 4.0%, and the mass ratio of lignin to diluted nitric acid was 1:10. Effects of solubilities of three kinds of calcium phosphate and ammoniated oxidized lignin were observed and reasonable reaction mechanism was discussed.

关 键 词： 造纸黑液木素 磷酸钙 溶解性 稀硝酸 氧化 活性氧化木素

领　　域： [环境科学与工程] [化学工程]