| Cr/CeO2体系及其对乙烷脱氢反应催化性能的研究 |
| A Study on Cr/CeO2 Catalysts and Their Catalytic Performance for Dehydrogenation of Ethane |
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| 摘要: |
| 关键词: Cr/CeO2催化剂 乙烷脱氢 二氧化碳 |
| 基金项目: |
| Abstract: The dehydrogenation reaction of ethane over Cr/CeO2 catalysts in presence of CO2 was studied with fixed-bed micro-reactor. The Cr/CeO2 catalysts of different Cr loading have been synthesized using impregnation techniques. The Cr/CeO2 system has already been found to be active and selective in the reaction at around 740 ℃. The function of carbon dioxide is to remove coke and hydrogen to accelerate dehydrogenation of ethane. The results of catalysts characterizations indicated that Cr3+ and Cr6+ occurred on the surface of the catalysts. The 1.2 mmol Cr/100m2 CeO2 catalyst sample with a monolayer dispersion of Cr on CeO2 support showed a stronger surface acidity and a maximum yield of ethylene of about 35.5% at 36.6% conversion of ethane. |
| Keywords: ethane dehydrogenation Cr/CeO2 catalysts CO2 |
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| 葛 欣,孙 清,沈俭一.Cr/CeO2体系及其对乙烷脱氢反应催化性能的研究[J].无机化学学报,2004,20(8):987-990. |
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