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OALib Journal期刊
ISSN: 2333-9721
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焙烧温度对ni-mg基蜂窝状催化剂生物燃气重整调变性能的影响
, PP. 862-867
Keywords: 生物燃气,蜂窝状催化剂,ni-mg固溶体,重整反应,焙烧温度
Abstract:
？采用浸渍法制备了ni、mg双金属负载在堇青石表面形成的蜂窝状催化剂,研究了焙烧温度对催化剂结构和生物质粗燃气重整反应性能的影响.结果表明,在不同焙烧温度下主要有nio和nimgo2固溶体物相生成.相比于其他焙烧温度,催化剂在650℃焙烧温度下更有利于镍活性金属位的分散和活性位数量的增加.在干重整反应条件下,ch4、co2的转化率以及h2、co产率随焙烧温度的升高呈现先增加后降低的变化趋势,在650℃焙烧温度下达到最高.在水蒸气重整反应条件下主要发生烃类产物与h2o和co2的重整反应以及水煤气变换反应,焙烧温度的升高有利于水煤气反应的进行.此外,焙烧温度对于干重整反应条件下的h2/co体积比调节影响较小,而对于水蒸气重整反应条件下的h2/co体积比可进行选择性调节.
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