摘要
利用水热法合成粒度不同的球形碳颗粒,通过电镜、氮气吸附和X射线衍射仪对其形貌、结构和物相组成进行表征,并以不同碳为铂催化剂载体,研究环己烷脱氢反应的催化性能,考察不同碳载体粒度对负载铂催化剂性能的影响。研究结果表明:球形碳颗粒负载质量分数1.0%的铂催化剂,其催化脱氢性能随碳颗粒粒度的改变而有所不同,粒度减小,环己烷脱氢活性增强,并且优于活性炭负载铂催化剂的性能;通过改变球形碳载体粒度大小和优化铂负载量,可增强催化剂活性和稳定性。
The spherical carbon particles with different size were synthesized by a hydrothermal method, and the morphology, structure and phase composition of the particles were characterized by Scan Electron microscope, Nitrogen adsorption techniques and X-ray diffraction instrument. The catalytic properties of cyclohexane dehydrogenation reaction were studied using different carbon-supported Pt catalysts, and the effect of different carbon particle size on catalytic performance was then explored. The results show that the catalytic dehydrogenation property of spherical carbon particles- supported 1.0% Pt catalysts changes with size change of carbon particles. The activities of catalysts increase with decreasing the support size, which are superior to that of activate carbon-supported Pt catalyst. The activity and stability of catalyst can be improved by controlling the size of carbon supports and optimizing the Pt loading.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2017年第2期532-536,共5页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51572185)
山西煤基重点科技攻关项目(MQ2014-10)
山西省自然科学基金(2014011016-4)
关键词
碳颗粒
铂催化剂
粒度
催化作用
carbon particle
Pt catalysts
particle size
catalytic function
