摘要
以反相悬浮聚合法合成的PMAA微凝胶为模板，将Fe^2＋用浸渍法引入到PMAA模板且经过氧化氢溶胀后，以二苯并噻吩（DBT）为模型反应物，将其溶解于十氢萘中配成模型油。针对模型体系，初步考察PMAA／Fenton复合微球对模型油氧化脱硫的影响，利用扫描电子显微镜（SEM）和傅立叶变换红外光谱（FT—IR）对脱硫前后微球的形貌、组份进行分析。同时，利用气相色谱仪（GC—FID）对微球的脱硫效率进行表征，研究结果表明，PMAA／Fenton复合微球用于脱硫的最大特点在于催化剂负载于微凝胶上可实现循环使用、DBT的氧化产物不需萃取。
Using PMAA microgels prepared by reverse suspension polymerization method as template, PMAA/Fe2＋ micro- spheres were obtained via introducing Fe2＋ to the microspheres by immersion method and swelled by hydrogen peroxide. Model Oil were fabricated by dissolving dibenzothiophene （DBT） in decahydronaphthalene. The influence of PMAA/Fen- ton composite microspheres on oxidative desulfurization of model oil was investigated. The morphology and component of microspheres were characterized by SEM and FT-IR, respectively. The sulfur concentration was characterized by GC- FID. The results indicate that the method used here makes operational process and separation of catalyst easy.
基金
西安文理学院重大科研基金（zd201002）
关键词
高分子微凝胶
两相催化
脱硫
微球
polymer microgel
biphasic catalytic
deep desulfurization
microspheres
