Preparation and Performance of Supported Iron-based Catalysts for Conversion of Synthesis Gas to Light Olefins
SHEN Xing WANG Lei ZHANG Yong-feng LI Zeng ZHANG Xiang-ping ZHANG Suo-jiang
State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences School of Chemical Engineering, Inner Mongolia University of Technology Gruduate University of Chinese Academy of Sciences Institute of process Engineering, CAS Institute of Process Engineering, CAS
Abstract：The supported iron-based catalysts for the conversion of synthesis gas to light olefins were prepared by impregnation method and the effects of parameters, such as carrier, promoter, calcination temperature, reaction temperature, reaction pressure and space velocity, on the reaction were investigated in a fixed-bed reactor. The catalysts were characterized by XRD, N2 physisorption, thermo gravimetric analysis and Raman spectroscopy. The results indicated that FeK/ZSM-5 catalyst prepared by calcination at 500℃ after 3 h had the best catalytic activity. Increasing reaction pressure and decreasing space velocity, the activity of catalyst was all obviously improved. Using ZSM-5 as the carrier, the comparable catalytic performance of adding K and Mn promoters were studied. The results showed that FeMnK/ZSM-5 catalyst improved the CO conversion rate from 18.7% to 63.8%, and C2=~C3= selectivity from 4.8% to 14.1% contrast to Fe/ZSM-5 catalyst under the conditions of volume ratio of H2 to CO2, reaction temperature 380℃, reaction pressure 1.0 MPa and space velocity 4400 h-1.
沈兴 王蕾 张永锋 李增喜 张香平 张锁江. 合成气直接制取低碳烯烃的铁基负载型催化剂的制备与性能[J]. , 2009, 9(6): 1178-1185.
SHEN Xing WANG Lei ZHANG Yong-feng LI Zeng ZHANG Xiang-ping ZHANG Suo-jiang. Preparation and Performance of Supported Iron-based Catalysts for Conversion of Synthesis Gas to Light Olefins. , 2009, 9(6): 1178-1185.
2009, Vol. 9 
