连晨帅,代蓉,田韧,吴旭,安霞,谢鲜梅.Ni-Cu双金属催化剂上乙醇水蒸气重整制氢研究—制备方法对催化性能的影响[J].分子催化,2019,33(4):297-308
Ni-Cu双金属催化剂上乙醇水蒸气重整制氢研究—制备方法对催化性能的影响
The Effect of Preparation Method on Catalytic Properties over Ni-Cu Bimetallic Catalysts for Steam Reforming of Ethanol
投稿时间:2019-06-17  修订日期:2019-07-23
DOI:
中文关键词:  介孔SiO2  分散性  乙醇重整制氢  积碳
英文关键词:mesoporous SiO2  disperation  steam reforming of ethanol  carbon deposition
基金项目:国家自然科学基金(51541210);山西省自然科学基金(201701D121042)
作者单位E-mail
连晨帅 太原理工大学 化学化工学院, 气体能源高效清洁利用山西省重点实验室, 山西 太原 030024  
代蓉 太原理工大学 化学化工学院, 气体能源高效清洁利用山西省重点实验室, 山西 太原 030024  
田韧 太原理工大学 化学化工学院, 气体能源高效清洁利用山西省重点实验室, 山西 太原 030024  
吴旭 太原理工大学 化学化工学院, 气体能源高效清洁利用山西省重点实验室, 山西 太原 030024  
安霞 太原理工大学 化学化工学院, 气体能源高效清洁利用山西省重点实验室, 山西 太原 030024  
谢鲜梅 太原理工大学 化学化工学院, 气体能源高效清洁利用山西省重点实验室, 山西 太原 030024 xxmsxty@sina.com 
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中文摘要:
      我们采用分步浸渍法和共浸渍法制备了一系列的Ni-Cu/mSiO2催化剂.运用XRD、N2吸附-脱附、H2-TPR、SEM、TG-DTG等表征手段对催化剂反应前后的物理化学性质进行分析,催化剂对乙醇水蒸气重整(ESR)反应的催化性能通过常压固定床反应器进行评价.结果表明:催化剂的催化性能与载体上的活性组分分散有关,而活性金属的分散性与制备方法有关.共浸渍法制备的催化剂Ni14-Cu/mSiO2活性组分分散度较高,抗积碳能力与稳定性更好.在质量空速为2.7 h-1,水醇摩尔比为9,反应温度为550℃的条件下进行稳定性测试,催化剂Ni14-Cu/mSiO2测试25 h没有出现失活现象,乙醇转化率保持在100%,H2的选择性保持在70%以上,反应后的积碳含量仅为5.52%.
英文摘要:
      A series of Ni-Cu/mSiO2 catalysts were prepared by consecutive impregnation method and co-impregnation method. The physicochemical properties of the catalysts before and after the reaction were characterized by XRD, N2 adsorption-desorption, H2-TPR, SEM and TG-DTG. The catalytic properties of the catalyst for ethanol steam reforming (ESR) reaction was evaluated. The results showed that the catalytic properties of the catalyst was related to the dispersion of the active component on the carrier, and the dispersion of the active metal was related to the preparation method. The catalyst Ni14-Cu/mSiO2 prepared by co-impregnation method has higher dispersion, anti-carbon deposition capacity and stability. The deactivation of catalyst Ni14-Cu/mSiO2 was not observed after 25 h of reaction. The conversion of ethanol and selectivity of H2 was 100% and above 70%, respectively, and the carbon deposition rate after reaction was only 5.52%, when the weight hour space velocity was 2.7 h-1, water-ethanol molar ratio was 9, and reaction temperature was 550℃.
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