焙烧温度对乙醇重整催化剂NiO_CeO_2_ZnO性能的影响.pdfVIP

30 ! 5 Vol. 30! No. 5 2010 5 Transactions of Beijing Institute of Tec nology M ay 2010 NiOCeO2ZnO 1, 2 1, 2 1, 2 朱跃辉 , ! 吴锋 , ! 吴川 ( 1 , ! 100081; 2 , ! 100081) ! : NiOCeO ZnO , T GDSC, XRD, SEM , 2 . : , , ; , ; 500 ∀ , , . : ; ; ; ; : O 643! ! ! : A ! ! ! :2010) Effect of Calcination Temperature on the Performance of NiOCeO2ZnO Catalyst for Ethanol Steam Reforming 1, 2 1, 2 1, 2 ZHU Yue ui , ! WU Feng , ! WU C uan ( 1Sc ool of C em ical Engineering and Environment, Beijing Institute of Tec nology, Beijing 100081, C ina; 2National Development Center of H i T ec Green M aterials, Beijing 100081, C ina) Abstract: NiOCeO2ZnO catalyst w as synt esized in coprecipitation met od. T e structure and performance of t e catalysts calcinated at different temperatures w ere c aracterized by T GDSC, XRD, SEM met ods. It is revealed t at t e grain size and crystallinity of catalyst increase markedly w it t e increase in calcination temperature. Serious sintering p enomenon w as found on t e catalyst because of excessive catalyst calcination temperature, w ic resulted in a big drop of dispersion on t e surface of catalyst. T e catalyst s ow ed excellent selectivity and yield of ydrogen, ow ever, t e performance of catalyst for ydrogen production decreased w it t e increase of calcination tem