Synthesis of highly loaded and well dispersed CuO/SBA-15 via an ultrasonic post-grafting method and its application as a catalyst for the direct hydroxylation of benzene to phenol
Synthesis of highly loaded and well dispersed CuO/SBA-15 via an ultrasonic post-grafting method and its application as a catalyst for the direct hydroxylation of benzene to phenol
复制标题
超声后接枝法合成高负载分散性CuO/SBA-15及其作为苯直接羟基化制苯酚催化剂的应用
DOI：
10.1016/j.micromeso.2013.04.012
复制
发表时间：
2013-09
影响因子：
5.2
通讯作者：
Shi, Zhan
中科院分区：
文献类型：
--
作者：
Dong, Wenjun;Yang, Mu;Luan, Yi;Shi, Zhan
我们开发了一种新型超声波后接枝方法，可在介孔二氧化硅 (SBA-15) 通道内获得高负载且分散良好的 CuO 纳米团簇。以三甲基氯硅烷（TMCS）和3-氨基丙基三乙氧基硅烷（APTES）为改性表面活性剂，以硝酸铜溶液为前驱体。通过FT-IR、XRD、SAXRD、ICP-AES、BET、HRTEM、TPR和XPS对样品进行了表征，结果表明CuO团簇分散良好，尺寸非常小。使用 CuO/SBA-15 作为催化剂，评价了一步液相法中苯羟基化为苯酚的情况。通过在 SBA-15 上接枝 13.4wt.% 的铜，实现了高转化率 (28%) 和选择性 (95%)。此外，该催化剂被证明能够循环利用多达五次，而不会显着损失转化率或选择性。
A novel ultrasonic post-grafting method has been developed to obtain highly-loaded and well-dispersed CuO nanoclusters inside the channels of mesoporous silica (SBA-15). Trimethylchlorosilane (TMCS) and 3-aminopropyltriethoxysilane (APTES) were used as modification surfactants, and copper nitrate solution was used as the precursor. The samples were characterized by FT-IR, XRD, SAXRD, ICP-AES, BET, HRTEM, TPR and XPS, which illustrated that the CuO clusters were well-dispersed in very small sizes. The hydroxylation of benzene to phenol in a one-step liquid-phase process using CuO/SBA-15 as the catalyst was evaluated. High conversion (28%) and selectivity (95%) were achieved with a 13.4wt.% copper grafted on SBA-15. Furthermore, the catalyst was shown to have the ability to be recycled up to five times without a significant loss of conversion or selectivity.
登录
查看更多内容
影响因子：
9.9
作者：
Yingying Wang;Ge Wang;Mu Yang;Li Tan;W. Dong;R. Luck
通讯作者：
Yingying Wang;Ge Wang;Mu Yang;Li Tan;W. Dong;R. Luck
影响因子：
8.6
作者：
Z. Wu;Y. Wang;Wanjing Huang;Jing Yang;Hong Ji Wang;J. Xu;and Yi Lun Wei;J. Zhu
通讯作者：
Z. Wu;Y. Wang;Wanjing Huang;Jing Yang;Hong Ji Wang;J. Xu;and Yi Lun Wei;J. Zhu
影响因子：
5.2
作者：
A. Kong;Haiwen Wang;Xin Yang;Yawei Hou;Y. Shan
通讯作者：
A. Kong;Haiwen Wang;Xin Yang;Yawei Hou;Y. Shan
影响因子：
15
作者：
Sun, Junming;Ma, Ding;Su, Dangsheng
通讯作者：
Su, Dangsheng
影响因子：
5.2
作者：
Yan Luo;Jun Lin
通讯作者：
Yan Luo;Jun Lin