水煤气变换反应
催化作用
热解
化学
蒸汽重整
甲苯
氢
甲烷
无机化学
化学工程
合成气
产量(工程)
制氢
材料科学
有机化学
冶金
工程类
作者
Jingwei Wang,Baofeng Zhao,Suxiang Liu,Di Zhu,Fayuan Huang,Huajian Yang,Haibin Guan,Angang Song,Di Xu,Laizhi Sun,Hongzhang Xie,Wei Wei,Wei Zhang,Thomas Helmer Pedersen
标识
DOI:10.1016/j.enconman.2022.115246
摘要
• The E a of RDS of critical reactions on NFC was decreased comparing with NC. • The toluene cracking is most likely to occur on NFC, while WGSR is the opposite. • The addition of Fe makes NFC have high catalytic activity and stability. • Compared with NC, NFC reduces Y liquid by 18.32% and increases Y gas by 26.27%. • The H 2 yield was increased by 18.29% to 453.34 mL/g-biomass at 650 ℃ with NFC. The H 2 -rich gas produced by biomass pyrolysis with Ni-based catalysts were studied by DFT, thermodynamic simulation, and pyrolysis experiment. The complex reaction between volatiles of biomass pyrolysis was clarified through DFT calculation. The results proved that the E a of key reactions for H 2 production on Ni-Fe/CaO surface were lower than that on NC, which facilitates to produce H 2 . The order of the E a of the rate determining step on Ni-Fe/CaO surface is toluene cracking reaction < water-carbon reaction < Boudouard reaction < methane steam reforming reaction < methane dry reforming reaction < water gas shift reaction, indicating water gas shift reaction is the key control reaction. When the temperature is 650 ℃, Ni-Fe/CaO can effectively adsorb CO 2 to break the thermodynamic equilibrium of the water gas shift reaction and promote the forward reaction to generate H 2 . Thermodynamic simulation and pyrolysis experiments determined that 650℃ and Ni-Fe/CaO are the most suitable reaction condition for H 2 formation. Under this condition, the liquid yield of biomass pyrolysis decreased by 18.32% and the gas yield was increased by 26.27% compared to that of Ni /CaO. More importantly, the H 2 yield was increased by 18.29% to 453.34 mL/g-biomass.
科研通智能强力驱动
Strongly Powered by AbleSci AI