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焙烧温度对二甲醚水蒸气重整制氢 Cu/ZnO/Al2O3/Cr2O3+H-ZSM-5双功能催化剂性能的影响

李娟 ,  海航 ,  闫常峰 ,  胡蓉蓉 ,  么志伟 ,  罗伟民 ,  郭常青 ,  李文博

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引用本文: 李娟, 海航, 闫常峰, 胡蓉蓉, 么志伟, 罗伟民, 郭常青, 李文博. 焙烧温度对二甲醚水蒸气重整制氢 Cu/ZnO/Al2O3/Cr2O3+H-ZSM-5双功能催化剂性能的影响[J]. 燃料化学学报, 2012, 40(10): 1240-1245. shu
Citation:  LI Juan, HAI Hang, YAN Chang-feng, HU Rong-rong, YAO Zhi-wei, LUO Wei-min, GUO Chang-qing, LI Wen-bo. Effect of calcination temperature on properties of Cu/ZnO/Al2O3/ Cr2O3+H-ZSM-5 bi-functional catalysts for steam reforming of dimethyl ether[J]. Journal of Fuel Chemistry and Technology, 2012, 40(10): 1240-1245. shu

焙烧温度对二甲醚水蒸气重整制氢 Cu/ZnO/Al2O3/Cr2O3+H-ZSM-5双功能催化剂性能的影响

    通讯作者: 闫常峰,yancf@ms.giec.ac.cn,Tel:020-87057729。
  • 基金项目:

    国家自然科学基金(20806082, 50306026) (20806082, 50306026)

    广东省自然科学基金(10151007006000016)。 (10151007006000016)

摘要: 采用共沉淀耦合机械混合法制备了Cu/ZnO/Al2O3/Cr2O3+H-ZSM-5双功能催化剂,并用于二甲醚水蒸气重整制氢反应,结合热重、傅里叶红外光谱、XRD、BET、H2-TPR表征,考察了焙烧温度对Cu/ZnO/Al2O3/Cr2O3催化剂物理化学性质及双功能催化剂催化性能的影响。研究结果表明,400℃焙烧时,析出CuO粒子的同时伴有尖晶石相,进而在反应过程中对金属铜粒子起到良好的隔离作用。而焙烧温度较低时,催化剂分解不完全,催化剂活性位较少。焙烧温度大于500℃时,CuO粒子发生二次团聚,同时尖晶石相大量生成,造成催化剂活性位减少,活性较低。合适的焙烧温度为400℃,此时二甲醚转化率为92.9%,氢气收率可达到76.5%,具有较好的反应效果。

English

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  • 收稿日期:  2012-02-20
  • 网络出版日期:  2012-05-04
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