CAJ | 학술논문

采用沉积沉淀法制备了MOx/Al2O3（M=Ni、Mg、Co、Ce）催化剂，研究了不同助剂对催化剂反应性能的影响，应用X射线衍射（XRD）考察了氟化预处理前后MOx/Al2O3催化剂中Al物种的转变，并应用于HFC-134a （1,1,1,2-四氟乙烷）裂解制备三氟乙烯（TrFE）反应。结果表明，Ni、Co、Ce 添加能有效提高 AlF3催化剂的HFC-134a裂解性能，而Mg对AlF3催化性能起抑制作用。其中，NiFx/AlF3催化剂催化性能最高，当反应温度为400℃时，HFC-134a的转化率最高可达21.4%，三氟乙烯的选择性在99.7%以上，且反应较为稳定。
채용침적침정법제비료MOx/Al2O3（M=Ni、Mg、Co、Ce）최화제，연구료불동조제대최화제반응성능적영향，응용X사선연사（XRD）고찰료불화예처리전후MOx/Al2O3최화제중Al물충적전변，병응용우HFC-134a （1,1,1,2-사불을완）렬해제비삼불을희（TrFE）반응。결과표명，Ni、Co、Ce 첨가능유효제고 AlF3최화제적HFC-134a렬해성능，이Mg대AlF3최화성능기억제작용。기중，NiFx/AlF3최화제최화성능최고，당반응온도위400℃시，HFC-134a적전화솔최고가체21.4%，삼불을희적선택성재99.7%이상，차반응교위은정。
A series of MOx/Al2O3 ( M=Ni , Mg , Co , Ce ) catalysts were prepared by the deposition-precipitation method,and the effect of different additives on catalytic pyrolysis was studied. The catalysts were characterized by X-ray diffraction (XRD),and transformation of Al species in the MOx/Al2O3 catalysts after pre-fluorination was investigated. The catalysts were used in catalytic pyrolysis of 1,1,1,2-tetrafluoroethane (HFC-134a) to trifluoroethylene (TrFE),and the results showed that the addition of Ni,Co,Ce to AlF3 could improve catalytic performance for the pyrolysis of HFC-134a,while that of Mg could cause inhibition of catalytic performance. High activity was obtained on NiFx/AlF3 catalyst. The conversion of 1,1,1,2-tetrafluoroethane was higher than 21.4%and the selectivity to trifluoroethylene was 99.7%at reaction temperature of 400℃,and NiFx/AlF3 catalyst exhibited a longer life span.