| 引用本文： |
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李景林,李斌,梁宇宁,韦承谦.Ag-ZSM-5分子筛上乙醇氧化过程中积碳行为的研究[J].广西科学,1999,6(2):106-108. [点击复制]
- Li Jinglin,Li Bin,Liang Yuning,Wei Chengqian.Carbon Deposit on Ag-ZSM-5 Molecular Sieve in Ethanol Oxidation[J].Guangxi Sciences,1999,6(2):106-108. [点击复制]
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| 摘要: |
| 用不同银含量及不同硅铝比的Ag-ZSM-5分子筛催化乙醇氧化成乙醛,采用高温氧化烧炭法考察了银含量、硅铝比及反应温度对催化过程中积炭行为的影响。结果表明:高SiO2/Al2O3时积炭较慢;Ag含量超过10%,对积炭速率影响不大;反应温度高时积炭速率减慢,但是选择性及转化率降低。研究发现Sn改性的Ag-ZSM-5分子筛具有较好的抗积炭能力。 |
| 关键词: 积炭 ZSM-5 硅铝比 |
| DOI： |
| 投稿时间：1998-09-01修订日期：1998-10-05 |
| 基金项目:广西自然科学基金资助项目(批准号9615007)。 |
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| Carbon Deposit on Ag-ZSM-5 Molecular Sieve in Ethanol Oxidation |
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Li Jinglin, Li Bin, Liang Yuning, Wei Chengqian
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| (College of Chemsitry & Chemical Engineering, Guangxi University, 10 East Xixiangtanglu, Nanning, Guangxi, 530004) |
| Abstract: |
| Ag-ZSM-5 was used to catalize the oxidation of ethanol to acetaldehyde,and the effects of Ag content,Si:Al ratio and reaction temperature on carbon deposit behavior in the oxidation were examined by the high temperature oxidation.The results showed that carbon deposit was slow at high SiO:Al2O3 ratio,and there were no much affection on carbon deposit at over 10% of Ag content;and carbon deposit was slow at high temperature,but selectivity and conversion were slow.It was found that Ag-ZSM-5 with being improved Sn had a good resistance to carbon deposit. |
| Key words: carbon deposit ZSM 5 Si/Al molar ratio |
