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Ni/CeO₂和Ni-Cu/CeO₂催化剂上的乙醇水蒸汽重整制氢反应

Hydrogen production from steam reforming of ethanol using Ni/CeO₂ and Ni-Cu/CeO₂ catalysts

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【Author】 WANG Jian1,2,3, SUN Jie1, QIU Xin-ping1,2, WU Zeng-hua1,2,CHEN Li-quan1 (1. Department of Chemistry, Tsinghua University, Beijing 100084, China; 2. Shenzhen Graduate School, Tsinghua University, Shenzhen Guangdong518055, China; 3. The 718th Research Institute, Handan Hebei 056027 , China)

【机构】清华大学化学系；清华大学化学系北京100084清华大学深圳研究生院；广东深圳518055中国船舶重工集团公司第七一八研究所；河北邯郸056027；北京100084；北京100084清华大学深圳研究生院；广东深圳518055；

【摘要】采用共沉淀-焙烧法和共沉淀-熔盐法分别得到了Ni/CeO2和Ni-Cu/CeO2等3种催化剂,通过X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、布鲁瑙尔-埃利特-特勒法(BET)比表面测定等分析手段对催化剂的结构性能进行表征,并在常压固定床流动体系中进行乙醇水蒸汽重整反应,讨论和评价催化剂的性能。结果表明:3种催化剂在较低的温度范围内对氢气均有较高的选择性;尤其是熔盐法制备的Ni/CeO2催化剂,其物相均匀,粒度约10nm左右,300℃时即具有了催化活性,450℃时氢气选择性高达70.9%;催化剂在60h内的稳定性好,具备了实际应用的潜力。更多还原

【Abstract】 Ni/CeO2 and Ni-Cu/CeO2 catalysts were prepared by co-precipitation-agglomeration and melten salts methods. XRD, SEM, TEM and BET were used to test the structure properties of catalysts, and catalytic properties were tested through a fix-bed reactor under atmospheric pressure. All three kinds of catalysts exhibited high hydrogen selectivity to ethanol steam reforming reaction. The Ni/CeO2 catalyst prepared by melten salts method showed prominent activity, with the hydrogen selectivity of 70.9% at 450 ℃.The stability of catalysts was good.更多还原