Catalytic Vapor Decomposition of Methane over Nickle Catalyst: Growth Rate and the Corresponding Microstructures of Carbon Nanofibers
スポンサーリンク
概要
- 論文の詳細を見る
Time-resolved intrinsic reaction rate of catalytic vapor deposition of methane into carbon nanofibers (CNFs) and hydrogen on supported Ni catalysts was determined under different reaction temperatures (773–973 K) and feed compositions (PH2 = 0–0.29 atm, PCH4 = 0:28–0.71 atm) and the microstructure of the produced CNFs was characterized by Raman and TEM. The results showed that, increasing the reaction temperature, methane partial pressure and decreasing hydrogen partial pressure increased the initial reaction rate but generally led to fast catalyst deactivation. A high carbon yield per unit catalyst was obtained as a compromise between initial reaction rate and catalyst deactivation rate. The microstructures of the produced CNFs had a close relationship with the initial reaction rate. The CNFs produced with high initial rate tended to have a small angle between the graphene layers and the growth axis, thin diameter and a hollow core. This phenomenon can be used for monitoring and controlling the CNFs synthesis process.
著者
-
Li Ping
State Key Laboratory Of Environmental Geochemistry Institute Of Geochemistry Chinese Academy Of Scie
-
Zhou Jing-Hong
State Key Laboratory of Chemical Engineering, East China University of Science and Technology
-
Sun Yun-Fei
State Key Laboratory of Chemical Engineering, East China University of Science and Technology
-
Sui Zhi-Jun
State Key Laboratory of Chemical Engineering, East China University of Science and Technology
-
Chen De
Department of Chemical Engineering, Norwegian University of Science and Technology
-
Zhou Xing-Gui
State Key Laboratory of Chemical Engineering, East China University of Science and Technology
関連論文
- High Exposure of Chinese Mercury Mine Workers to Elemental Mercury Vapor and Increased Methylmercury Levels in Their Hair
- Optimized Process of Mn-Doped Ba0.5Sr0.5TiO Thin Films on Platinum Coated Sapphire Substrates
- Catalytic Vapor Decomposition of Methane over Nickle Catalyst: Growth Rate and the Corresponding Microstructures of Carbon Nanofibers
- Green tea polyphenol epigallocatechin-3-gallate enhances 5-fluorouracil-induced cell growth inhibition of hepatocellular carcinoma cells
- Analysis of selected singleton transposable elements (SSTEs) and their application for the development of land PATE markers in Magnaporthe oryzae