助剂对甲烷/二氧化碳重整用镍基催化剂的影响探析

来源 :2014年全国博士后新材料技术与应用学术论坛 | 被引量 : 0次 | 上传用户:itache
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CO2重整CH4制合成气的过程是实现温室气体甲烷、二氧化碳资源化利用的一条有效途径,具有重要意义.研制高活性、高选择性和高稳定性的催化剂是重整反应实现工业应用的关键.利用大气压高频冷等离子体炬和浸渍法制备了分别添加Co、MgO、CeO2和La2O3助剂的Ni基催化剂,以甲烷/二氧化碳重整反应为媒介考察了助剂添加前后的催化活性.结果表明,冷等离子体炬法制备的催化剂活性优于常规还原法;助剂MgO和Co添加后催化剂性能更好;助剂Co和MgO最佳添加量为2%;助剂Co和MgO对CH4转化率提高作用大体相当;助剂MgO对CO2转化率提高则效果更佳.
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