| 甲烷氧化偶联反应低温催化剂 |
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| 引用本文： | 戴伟,王恒秀,茅文星,魏文德.甲烷氧化偶联反应低温催化剂[J].石油化工,1993(6). |
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| 作者姓名： | 戴伟 王恒秀 茅文星 魏文德 |
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| 作者单位： | 化工部北京化工研究院，化工部北京化工研究院，化工部北京化工研究院，化工部北京化工研究院 北京 100013，北京 100013，北京 100013，北京 100013 |
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| 基金项目： | 中国石化总公司发展部科研基金 |
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| 摘 要： | ⅢB族和稀稀元素(Y、La、Sm、Nd等)的化合物,在100—600℃具有催化甲烷氧化偶联反应活性。在300℃,La催化剂的甲烷转化率约21.8％,C_2烃收率约11.1％,C_2时空收率约为5μmol/mlcat·s.经过45小时的连续反应,结果表明催化剂性能稳定。
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| 关 键 词： | 甲烷 氧化偶联 低温反应 催化剂 |
The Oxidative Coupling of Methane to C_2 Hydrocar bons over Low Temperature Catalysts |
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| Dai Wei,Wang Hengxiu,Mao Wenxing,Wei Wende Beijing Research Institute of Chemical Industry,Mnistry of Chemical Industry,Beijing.The Oxidative Coupling of Methane to C_2 Hydrocar bons over Low Temperature Catalysts[J].Petrochemical Technology,1993(6). |
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| Authors: | Dai Wei Wang Hengxiu Mao Wenxing Wei Wende Beijing Research Institute of Chemical Industry Mnistry of Chemical Industry Beijing |
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| Affiliation: | Dai Wei,Wang Hengxiu,Mao Wenxing,Wei Wende Beijing Research Institute of Chemical Industry,Mnistry of Chemical Industry,Beijing 100013 |
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| Abstract: | Compounds of Group IIIB elements with the rare earths elements, i. e., Y, La、Sm、 Nd, were used as low tmperaturecatalysts for the oxidative coupling of methane to C_2hydrocarbons in a tubular reactor at 373-873K. These catalysts are all active at low temperatures with Sm catalysts having the highest activity, whereas Y and Nd catalysts are both low in activity and C_2 selectivity. As for La catalysts, though less active than Sm catalysts, they have the higher C_2 selectivity, and a 21.8% methane conversion, 11.1% C_2 yield and 5mol/ml. cat. s space time yield is obtained by using La catalysts with CH_4 and O_2 co-feeding at 573K. The stability of the La catalysts was tested at 573K and found very stable, and gave 11-13% C_2 yield. |
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| Keywords: | methane oxidative coupling C_2 hydrocarbons rare earth catalyst low temperature reaction |
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