欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用浸渍-表面水解法对硅胶载体进行二氧化钛改性,并通过改进的阴离子交换法制备了负载型纳米金催化剂。采用AAS、TEM和XRD对催化剂进行表征,以环己烷选择性氧化反应评价其催化性能。硅胶载体经过二氧化钛表面改性,氯金酸原料的利用率达60%。金催化剂的活性和选择性随金负载量的降低而增大。在150℃,1.5 MPa O2,3 h的反应条件下,质量分数为0.1%金和10%二氧化钛的催化剂具有优良的催化性能：环己烷转化率为13%,环己酮和环己醇的选择性分别达41.1%和52.2%。
英文摘要：
Silica gel support was modified by titania via an impregnation-surface hydrolysis approach,and then used for preparing gold catalysts through an extended direct anion exchange method.The gold catalysts obtained were characterized by AAS,TEM and XRD,and their catalytic performances were evaluated by the selective oxidation of cyclohexane.The experimental results show that surface-modification of silica gel by titania significantly enhances gold loadings and up to 60% of chloroauric acid fed could be immobilized over titania-doped silica support.Moreover,the catalytic activities of gold increased inversely with the gold loadings.Under the oxidation reaction conditions of 150 ℃,1.5 MPa O2,3 h,the catalyst with 0.1%（w） Au and 10%（w） titania exhibited excellent catalytic performances： affording 13% conversion of cyclohexane,together with the selectivities of 41.1% and 52.2% towards cyclohexanone and cyclohexanol,respectively.
同期刊论文项目
同项目期刊论文
A new strategy for the preparation of porous zinc ferrite nanorods with subsequently light-driven ph
Preparation and application of novel magnetically separable gamma-Fe2O3/activated carbon sphere adso
Structural and magnetical properties of Co1-xZnxFe2O4 nanorods prepared by the solvothermal annealin
A new precursor strategy to prepare ZnCo2O4 nanorods and their excellent catalytic activity for ther
期刊信息
位置：