CAJ | 학술논문

采用沉淀沉积法制备了活性炭负载的铜基催化剂，并用其催化甲醇直接气相氧化羰基化合成碳酸二甲酯( DMC)。通过催化活性评价以及XRD、H2-TPR、SEM等表征考察了铜源、还原剂、沉淀剂、铜负载量等制备条件对催化剂性能的影响。结果表明，采用醋酸铜作为铜源、葡萄糖作为还原剂、负载量为17.1％时制备的Cu2 O/AC催化剂合成DMC活性最佳，在MeOH/CO/O2体积比=5∶11∶1、SV=6625 h-1的条件下，催化剂最高时空收率可达99.36 mg/(g·h)， DMC的选择性为83.13％。
채용침정침적법제비료활성탄부재적동기최화제，병용기최화갑순직접기상양화탄기화합성탄산이갑지( DMC)。통과최화활성평개이급XRD、H2-TPR、SEM등표정고찰료동원、환원제、침정제、동부재량등제비조건대최화제성능적영향。결과표명，채용작산동작위동원、포도당작위환원제、부재량위17.1％시제비적Cu2 O/AC최화제합성DMC활성최가，재MeOH/CO/O2체적비=5∶11∶1、SV=6625 h-1적조건하，최화제최고시공수솔가체99.36 mg/(g·h)， DMC적선택성위83.13％。
The activated carbon supported copper-based catalyst was prepared by deposition-precipitation method and used to catalyze the direct vapor-phase oxycarbonylation of methanol to dimethyl carbonate ( DMC ) . The effect of preparation conditions( such as copper salt, reductant, precipitant and loading amount ect) on the catalytic performance were investigated by XRD, H2-TPR and SEM techniques. The result showed that under the condition of MeOH/CO/O2(volume ratio)= 5∶11∶1, SV=6 625 h-1, Cu2O /AC catalyst (Cu(CH3COO)2·H2O as precursor, glucose as reductant, Cu2 O loading amount of 17. 1%) showed satisfactory catalytic performance for DMC synthesis. The STY reached 99. 36 mg/(g·h) and the selectivity of DMC was about 83. 13%.