Department of Chemical Engineering, Columbia University, New York, NY, 10027, USA.
Chemistry Department, Brookhaven National Laboratory, Upton, NY, 11973, USA.
Nat Commun. 2018 Apr 11;9(1):1398. doi: 10.1038/s41467-018-03793-w.
The inherent variability and insufficiencies in the co-production of propylene from steam crackers has raised concerns regarding the global propylene production gap and has directed industry to develop more on-purpose propylene technologies. The oxidative dehydrogenation of propane by CO (CO-ODHP) can potentially fill this gap while consuming a greenhouse gas. Non-precious FeNi and precious NiPt catalysts supported on CeO have been identified as promising catalysts for CO-ODHP and dry reforming, respectively, in flow reactor studies conducted at 823 K. In-situ X-ray absorption spectroscopy measurements revealed the oxidation states of metals under reaction conditions and density functional theory calculations were utilized to identify the most favorable reaction pathways over the two types of catalysts.
蒸汽裂解制丙烯的固有变异性和不足引起了人们对全球丙烯生产缺口的关注，并促使行业开发更多专用的丙烯技术。丙烷的 CO 氧化脱氢（CO-ODHP）反应有可能在消耗温室气体的同时填补这一空白。在 823K 下进行的流动反应器研究中，已确定负载在 CeO 上的非贵金属 FeNi 和贵金属 NiPt 催化剂分别是 CO-ODHP 和干重整反应的有前途的催化剂。原位 X 射线吸收光谱测量揭示了反应条件下金属的氧化态，并且还利用密度泛函理论计算来确定两种催化剂上最有利的反应途径。
