| 助催化剂对羟胺合成反应中Pt-Pd/C催化剂性能的影响 |
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| 引用本文： | 陈重,王宝云.助催化剂对羟胺合成反应中Pt-Pd/C催化剂性能的影响[J].稀有金属快报,2006,25(5):34-37. |
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| 作者姓名： | 陈重 王宝云 |
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| 作者单位： | 西北有色金属研究院,陕西,西安,710016 |
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| 摘 要： | 通过模拟羟胺合成反应,对Pt-Pd/C催化剂进行了性能测试和微观分析.结果表明,羟胺合成反应中,添加助催化剂GeO2可明显提高Pt-Pd/C催化剂活性,对选择性影响不大,但大量的助剂对催化剂性能性有负面的作用;GeO2作为助催化剂阻碍了Pt-Pd/C催化剂活性组分的流失,助剂对吸附在载体上活性组分的微晶的聚集有一定的隔离作用,在催化剂的使用过程中可以阻止活性组分微晶的聚集长大,起到了细化Pt,Pd微晶的作用.
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| 关 键 词： | 助催化剂 活性 选择性 |
| 文章编号： | 1008-5939(2006)05-034-04 |
| 修稿时间： | 2006年3月14日 |
Promoter Effect Pt- Pd/C Catalyst in the Synthetic Hydroxylamine Reactions |
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| Chen Zhong,Wang Baoyun.Promoter Effect Pt- Pd/C Catalyst in the Synthetic Hydroxylamine Reactions[J].Rare Metals Letters,2006,25(5):34-37. |
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| Authors: | Chen Zhong Wang Baoyun |
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| Abstract: | By means of simulating synthetic hydroxylamine reactions,the character test and microstructure analysis for Pt-Pd/C catalyst were performed. The results show that in the synthetic hydroxylamine reactions the promoter GeO2 can improve Pt-Pd/C catalyst activity obviously,and not change the selectivity,but large quantity promoter will play a negative role in catalysis. GeO2 as a promoter can obstruct a loss of live components from Pt-Pd/C catalyst,isolate microcrystals in live components which is adhered to the carrier in order to stopping crystal growth and accumulation,so that the Pt and Pd grain is minimized. |
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| Keywords: | Pt-Pd/C GeO2 |
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