【摘要】 采用浓硫酸一步法合成了磺酸功能化超高交联聚合物固体酸,成功解决了两步法中聚合反应速度过快的问题,并简化了合成步骤。改变硫酸用量合成了不同样品并通过FT-IR、XRD、XPS、N₂吸脱附等对样品进行了结构表征。通过实验设计对反应过程进行了分析,结果表明,虽然是一步法直接合成,但存在两个反应,聚合与磺化,且二者为竞争性反应。将制备的样品用于纤维素水解,评估了其催化活性并对水解条件进行了优化。更多还原

【Abstract】 Sulfonic acid functionalized hyper-crosslinked polymer solid acid was synthesized in one step under the catalysis of sulfuric acid. One-step synthesis successfully solved the problem of rapid polymerization and simplified the synthesis routes. Different samples were synthesized by changing the usage of sulfuric acid and their structures were characterized by FT-IR, XRD, XPS and N₂ adsorption/desorption. The polymerization process was analyzed by experimental design, and the results showed that although it was a one-step reaction, there were two processes of polymerization and sulfonation, and they were competitive. The catalytic activity of obtained samples were evaluated in the hydrolysis process of cellulose, and the hydrolysis conditions were optimized.更多还原