Ag掺杂型空心TiO2纳米微球的制备与表征及其光催化性能.pdfVIP

[Article] 物理化学学报(Wuli Huaxue Xuebao) Acta Phys. ⁃Chim. Sin. 2012, 28 (9), 2148-2154 September Received: March 26, 2012; Revised: June 12, 2012; Published on Web: June 12, 2012. ∗Corresponding author. Email: yangzw@; Tel: +86-931-7970359. The project was supported by the National Natural Science Foundation of China , Gansu Provincial Natural Science Foundation, China (1010RJZA024), and Scientific Research Fund of Northwest Normal University, China (NWNU-KJCXGC-03-63). 国家自然科学基金,甘肃省自然科学基金(1010RJZA024),西北师范大学“知识与科技创新工程项目” (NWNU-KJCXGC-03-63)资助 Ⓒ Editorial office of Acta Physico⁃Chimica Sinica doi: 10.3866/PKU.WHXB201206121 SO42-/SnO2-Fe2O3固体酸催化下的环酮Baeyer-Villiger氧化反应 及缩合反应 杨志旺* 陈丽娜 洪 伟 康瑞雪 王 佳 贾 娜 赵 磊 马恒昌 (西北师范大学化学化工学院,生态环境相关高分子材料教育部重点实验室,甘肃省高分子材料重点实验室,兰州 730070) 摘要: 采用共沉淀的方法制备了不同Fe掺杂量的SO42-/SnO2-Fe2O3固体超强酸催化剂.利用傅里叶变换红 外(FTIR)光谱,粉末X射线衍射(XRD), N2吸附-脱附实验(BET),热重(TG)分析和扫描电镜(SEM)等方法对样品 进行了表征.考察了所得催化剂对4-叔丁基环己酮与乙二醇缩合反应的催化性能.实验结果表明,与未经过掺 杂改性的SO42-/SnO2固体酸催化剂相比,改性后催化剂的催化性能得到了改善.研究了以Fe/Sn摩尔比为0.5 的SO42-/SnO2-Fe2O3固体酸为催化剂,部分醛酮类化合物与乙二醇及1,2-丙二醇的缩合反应.考察了反应时间、 催化剂用量等因素对反应的影响.同时,将所得催化剂应用于环酮Baeyer-Villiger氧化反应中,催化剂表现出 良好的催化活性,且催化剂具有一定的循环使用性. 关键词: 固体酸; 缩合反应; Baeyer-Villiger氧化; Fe2O3-掺杂; 硫酸氧化锡 中图分类号: O643 Baeyer-Villiger Oxidation and Acetalization of Cyclic Ketones on SO42-/SnO2-Fe2O3 Solid Acid Catalysts YANG Zhi-Wang* CHEN Li-Na HONG Wei KANG Rui-Xue WANG Jia JIA Na ZHAO Lei MA Heng-Chang (Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China) Abstract: Fe-doped SO42-/SnO2 (STF) solid acid catalysts with different amounts of iron were prepared via co-condensation, followed by sulfation and calcination. These materials were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray powder diffraction (XRD), N2 adsorption-desorption analysis (BET), t