Synthesis of Sulfated Silica-Doped Tin Oxides and Their High Activities in Transesterification
Synthesis of Sulfated Silica-Doped Tin Oxides and Their High Activities in Transesterification
复制标题
DOI：
10.1007/s10562-008-9440-6
复制
发表时间：
2008-02
影响因子：
2.8
通讯作者：
Yunchen Du;Sen Liu;Yanyan Ji;Yong‐Lai Zhang;Shu Wei;Fujian Liu;F. Xiao
中科院分区：
文献类型：
--
作者：
Yunchen Du;Sen Liu;Yanyan Ji;Yong‐Lai Zhang;Shu Wei;Fujian Liu;F. Xiao
采用水热法制备了一系列具有较大比表面积(113-188µm~2/g)的硫酸化二氧化硅掺杂锡氧化物，并对其进行了硫化和焙烧处理。用X射线衍射仪、傅里叶变换红外光谱、透射电子显微镜、氮气等温线和热重技术对样品进行了表征，结果表明样品由四方纳米晶二氧化锡和无定形二氧化硅组成。非常有趣的是，催化测试表明，这些硫化二氧化硅掺杂的锡氧化物在三酸甘油酯和甲醇的酯交换反应中比传统的硫化锡氧化物活性高得多。
A series of sulfated silica-doped tin oxides with large surface areas (113–188 m2/g) have been successfully prepared from hydrothermal synthesis, followed by sulfation and calcination. These samples are characterized by XRD, FT-IR, TEM, nitrogen isotherms, and TG techniques, and obtained results indicate that the samples are composed of tetragonal nanocrystalline tin oxides and amorphous silica. Very interestingly, catalytic tests show that these sulfated silica-doped tin oxides are much more active than conventional sulfated tin oxides for transesterification of triacetin with methanol.