【摘要】 以Ce（NO₃）₃和CeO₂为混合铈源制备了一系列Fe-K-Ce-Mo乙苯脱氢催化剂,并采用BET、XRD、CO₂-TPD和XPS等手段对其进行表征,考察了m（Ce（NO₃）₃）/m（Ce（NO₃）₃+CeO₂）对该催化剂结构、酸碱性以及催化乙苯脱氢反应性能的影响。结果表明,m（Ce（NO₃）₃）/m（Ce（NO₃）₃+CeO₂）=0.60时,催化剂具有中等水平的比表面积、较低的孔体积和较大的孔径,产生较多的活性相,酸碱中心数目和强度达到最佳,晶格氧丰富,催化剂催化乙苯脱氢反应活性最佳。更多还原

【Abstract】 A series of Fe-K-Ce-Mo catalysts with Ce（NO₃）₃and CeO₂ as Ce precursor were prepared for ethylbenzene dehydrogenation to styrene and characterized by means of BET,XRD,TPD,and XPS techniques.The effect of m（Ce（NO₃）₃）/m（Ce（NO₃）₃+CeO₂）to the catalytic performance of the prepared Fe-K-Ce-Mo catalyst in ethylbenzene dehydrogenation was investigated.The results showed that when m（Ce（NO₃）₃）/m（Ce（NO₃）₃+CeO₂）=0.60,the prepared Fe-K-Ce-Mo catalyst possessed a middle level surface,low pore volume and large pore size,more active phase,the optimal amount and strength of acid-base center,rich lattice oxygen,so the best activity.更多还原