CAJ | 학술논문

采用蒸氨法制备了CeO2掺杂的Cu/SiO2催化剂，考查了CeO2掺杂对Cu/SiO2催化剂在草酸二甲酯催化加氢制取乙二醇反应中热稳定性的影响。采用H2-程序升温还原（H2-TPR），透射电镜（TEM）对催化剂的物理化学性能进行了表征。在反应温度T=200℃,压力P=3.0 MPa,液时空速LHSV=0.4 h-1，氢气、草酸二甲酯摩尔比H2∶DMO=80∶1，400℃高温处理2.0 h的条件下测定了催化剂的活性变化。结果表明，CeO2掺杂对Cu物种的分散起到了促进作用，提高了催化剂的热稳定性。
채용증안법제비료CeO2참잡적Cu/SiO2최화제，고사료CeO2참잡대Cu/SiO2최화제재초산이갑지최화가경제취을이순반응중열은정성적영향。채용H2-정서승온환원（H2-TPR），투사전경（TEM）대최화제적물이화학성능진행료표정。재반응온도T=200℃,압력P=3.0 MPa,액시공속LHSV=0.4 h-1，경기、초산이갑지마이비H2∶DMO=80∶1，400℃고온처리2.0 h적조건하측정료최화제적활성변화。결과표명，CeO2참잡대Cu물충적분산기도료촉진작용，제고료최화제적열은정성。
A series of Cu/SiO2 catalysts doping with CeO2 was prepared by ammonia evaporation method using SiO2 as support. The influences on the stability of the catalysts were investigated. The catalysts were characterized through H2-temperaure programmed reduction (H2-TPR), and transmission electronic microscopy (TEM). The catalytic activity measurement experiments were performed under working conditions of T=200℃, P=3.0 MPa, LHSV=0.4 h-1, molar ratio of hydrogen to DMO (H2∶DMO=80∶1) and under 400℃treatment. The results indicated that CeO2 had a positive effect on the dispersion of Cu which could improve the thermostability of Cu/SiO2 catalysts.