工业催化
工業催化
공업최화
Industrial Catalysis
2015年
9期
704-708
,共5页
催化化学%Co/ZnO催化剂%F-T合成%助剂Al
催化化學%Co/ZnO催化劑%F-T閤成%助劑Al
최화화학%Co/ZnO최화제%F-T합성%조제Al
catalytic chemistry%Co/ZnO catalyst%Fische-Tropsch synthesis%Al promoter
通过均匀沉淀法制备ZnO,将其作为Co基催化剂载体,评价Co/ZnO催化剂的F-T反应性能,研究发现,助剂Al可以改善Co/ZnO催化剂失活现象.采用XRD和H2 -TPR对催化剂进行表征.结果表明,Co/ZnO催化剂主要因为反应过程中的烧结导致失活,添加助剂Al有效缓解催化剂的烧结现象,Al质量分数为0 . 1%时,不仅明显改善催化剂的反应稳定性,还提高催化剂的F-T反应活性.
通過均勻沉澱法製備ZnO,將其作為Co基催化劑載體,評價Co/ZnO催化劑的F-T反應性能,研究髮現,助劑Al可以改善Co/ZnO催化劑失活現象.採用XRD和H2 -TPR對催化劑進行錶徵.結果錶明,Co/ZnO催化劑主要因為反應過程中的燒結導緻失活,添加助劑Al有效緩解催化劑的燒結現象,Al質量分數為0 . 1%時,不僅明顯改善催化劑的反應穩定性,還提高催化劑的F-T反應活性.
통과균균침정법제비ZnO,장기작위Co기최화제재체,평개Co/ZnO최화제적F-T반응성능,연구발현,조제Al가이개선Co/ZnO최화제실활현상.채용XRD화H2 -TPR대최화제진행표정.결과표명,Co/ZnO최화제주요인위반응과정중적소결도치실활,첨가조제Al유효완해최화제적소결현상,Al질량분수위0 . 1%시,불부명현개선최화제적반응은정성,환제고최화제적F-T반응활성.
ZnO was prepared by homogeneous precipitation method. Co/ZnO catalysts were prepared by impregnating ZnO with cobalt nitrate solution,and were characterized by means of XRD and H2-TPR. The performance of Co/ZnO catalyst in Fischer-Tropsch reaction was investigated. The results showed that the deactivation phenomenon of Co/ZnO catalyst in Fischer-Tropsch reaction was improved by adding Al promoter. The sintering of metallic cobalt of Co/ZnO catalyst was the main reason for the catalyst deacti-vation. The addition of promoter Al effectively weakened the sintering phenomenon of the catalysts. The catalytic stability and the reactivity of Co/ZnO catalyst with Al mass fraction 0 . 1% were obviously enhanced.
