| 碳化硅为载体的氨合成催化剂的制备及性能研究 |
| Preparation and Application of SiC as Support for Ru Catalyst in Ammonia Synthesis |
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| 摘要: |
| 关键词: 碳化硅 碳热还原 高比表面积 氨合成 |
| 基金项目: |
| Abstract: A sol-gel process catalyzed by oxalic acid was used for the preparation of SiC precursor from raw materials of tetraethyl orthosilicate (TEOS) and sucrose. The precursor thus obtained was homogeneous. Sintered with a certain heating program in an argon flow, the precursor was converted into the high surface area SiC. The high specific surface area silicon carbide was used as catalyst support for ammonia synthesis. The effect of the surface of the support, promoter and the amount of Ru on the catalytic activity for ammonia synthesis was studied. The results show that when the high specific surface area SiC of 113 m2·g-1 is used as support, the prepared SiC-supported ruthenium catalyst has a relatively high activity(11.85%) under Ru 4wt%, Ba 4wt%, K 8wt%, 475 ℃, 10.0 MPa and 10 000 h-1. |
| Keywords: silicon carbide carbothermal high specific surface area ammonia synthesis |
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| 郑 勇,郑 瑛,于伟鹏,王 榕,魏可镁.碳化硅为载体的氨合成催化剂的制备及性能研究[J].无机化学学报,2008,24(6):1007-1011. |
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