中南民族大学学报（自然科学版）2025，Vol.44Issue(4)：433-439,7.DOI:10.20056/j.cnki.ZNMDZK.20240735
TiN负载Co3O4纳米颗粒催化剂的费-托合成反应性能
Catalytic performance of TiN-supported Co3O4 nanoparticles for Fischer-Tropsch synthesis
摘要
Abstract
Cubic Co3O4 nanoparticles were synthesized using a hydrothermal method.Subsequently,four catalysts,designated as 5%Co/TiN,10%Co/TiN,15%Co/TiN,and 20%Co/TiN,were prepared by ultrasonic dispersion using TiN as the support.A variety of characterization techniques,including scanning transmission electron microscopy(STEM),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),hydrogen temperature-programmed reduction(H2-TPR),nitrogen adsorption-desorption,and inductively coupled plasma mass spectrometry(ICP-MS),were employed to analyze the structures and performances of the catalysts.The results of TEM and EDS mapping indicated that the size of the Co3O4 nanoparticles was uniform and did not undergo significant changes after ultrasonic treatment.Except for the 20%Co/TiN catalyst,which exhibited partial agglomeration,the Co3O4 nanoparticles were uniformly dispersed on the remaining three catalysts.XPS and H2-TPR analyses indicated a strong interaction between the cobalt species and TiN.The performance of Fischer-Tropsch synthesis demonstrated that the initial CO conversion,TOF,and CTY were all linearly correlated with the cobalt loading.The 20%Co/TiN catalyst showed the highest initial CO conversion rate of 29.7%among the series,but exhibited poor stability,with a continuous decline in CO conversion rate over time.The deactivation was mainly due to the relatively large loading of cobalt metal,which resulted in a relatively short distance between cobalt particles,making them prone to agglomeration.关键词
费-托合成/钴基催化剂/四氧化三钴/氮化钛Key words
Fischer-Tropsch synthesis/cobalt catalyst/Co3O4/TiN分类
化学工程引用本文复制引用
赵燕熹,郑卓石,罗甜甜,刘成超,张煜华,李金林..TiN负载Co3O4纳米颗粒催化剂的费-托合成反应性能[J].中南民族大学学报（自然科学版）,2025,44(4):433-439,7.基金项目
国家重点研发计划资助项目(2022YFB4101201) （2022YFB4101201）
湖北省自然科学基金资助项目(2022BCA084) （2022BCA084）
中央高校基本科研业务费专项资金资助项目(CZZ24008) （CZZ24008）
