软模板法制备Pd/3D-ERGO及其催化硝基苯加氢性能研究
Soft-template synthesis of Pd/3D-ERGO and its catalytic performance for nitrobenzene hydrogenation
硝基苯催化加氢制备苯胺是芳烃利用的重要途径。以环己烷/乙醇/水乳液体系为软模板,氧化石墨烯(GO)为载体前驱体,抗坏血酸同步还原GO和PdCl2,诱导GO在界面组装并原位负载Pd纳米颗粒,制备三维多孔结构的还原GO负载钯催化剂(Pd/3D-ERGO)。Pd纳米颗粒在ERGO片层上均匀分散,平均粒径约5 nm。在60℃、1.0 MPa H2条件下仅需0.25 h即可实现硝基苯完全转化,苯胺选择性达98.5%,显著优于市售Pd/C催化剂,且稳定性良好。
Catalytic hydrogenation of nitrobenzene to aniline is an important approach for aromatic hydrocarbon utilization.A three-dimensional porous reduced graphene oxide-supported palladium catalyst (Pd/3D-ERGO) was prepared using a cyclohexane/ethanol/water emulsion system as a soft template,graphene oxide (GO) as the support precursor,and ascorbic acid to simultaneously reduce GO and PdCl2,inducing the interfacial assembly of GO and the in-situ anchoring of Pd nanoparticles.The Pd nanoparticles are uniformly dispersed on the ERGO sheets with an average particle size of approximately 5 nm.At 60℃ and 1.0 MPa H2,Pd/3D-ERGO achieved complete nitrobenzene conversion within only 0.25 h,with an aniline selectivity of 98.5%,significantly outperforming commercial Pd/C catalyst,while also exhibiting excellent stability.
硝基苯加氢 / 加氢催化剂 / Pd / 氧化石墨烯 / 软模板法
nitrobenzene hydrogenation / hydrogenation catalyst / Pd / graphene oxide / soft-template method
| [1] |
|
| [2] |
朱世东, 赵乾臻, 王星海, |
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
刘平, 陈炎亮, 张志翔, |
| [12] |
|
| [13] |
金彦任, 黄振兴. 吸附与孔径分布[M]. 北京: 化学工业出版社,2015:91-96. |
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
江苏省教育厅基础科学研究重大项目(23KJA530001)
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