摘要
In view of not uniformity in conventional coprecipitation preparation, urea was used as the precursor of precipitator to prepare Cu/ZnO/Al2O3 catalysts for methanol synthesis. In the method, urea was dissolved in nitrate solution and hydrolyzed to produce OH- as precipitator after the solution was heated to 90℃. After 6h, the precipitation was accomplished. The evaluation results of the catalyst activity showed that this catalyst had comparable catalytic activities to the industrial catalyst, and reached its maximum activity at 250℃. At reaction conditions of 250℃, 3MPa,and SV=7600h-1, the STY of methanol was 0.38g/（mL·h） with syngas compositing of H2,CO, CO2, and N2 atmolar ratio of 65.9∶27.1∶2.9∶4.1. X-ray Diffraction （XRD） revealed that the particle size of CuO and ZnO was about 200nm, and Al existed in the form of ZnAl2O4 spinel in the catalysts.
In view of not uniformity in conventional coprecipitation preparation, urea was used as the precursor of precipitator to prepare Cu/ZnO/Al_2O_3 catalysts for methanol synthesis. In the method, urea was dissolved in nitrate solution and hydrolyzed to produce OH- as precipitator after the solution was heated to 90℃. After 6h, the precipitation was accomplished. The evaluation results of the catalyst activity showed that this catalyst had comparable catalytic activities to the industrial catalyst, and reached its maximum activity at 250℃. At reaction conditions of 250℃, 3MPa,and SV=7600h-1, the STY of methanol was 0.38g/(mL·h) with syngas compositing of H_2,CO, CO_2, and N_2 atmolar ratio of 65.9∶27.1∶2.9∶4.1. X-ray Diffraction (XRD) revealed that the particle size of CuO and ZnO was about 200nm, and Al existed in the form of ZnAl_2O_4 spinel in the catalysts.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2004年第3期378-380,共3页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金(20206031)~~
