DOI: 10.1016/j.watres.2018.12.030
Scopus记录号: 2-s2.0-85059951855
论文题名: Supercritical water gasification of phenol over Ni-Ru bimetallic catalysts
作者: Zhang J. ; Dasgupta A. ; Chen Z. ; Xu D. ; Savage P.E. ; Guo Y.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 12
结束页码: 20
语种: 英语
英文关键词: Bimetallic catalyst
; Nickel
; Phenol
; Ruthenium
; Supercritical water gasification
Scopus关键词: Binary alloys
; Catalysts
; Energy barriers
; Gasification
; Hydrogen production
; Hydrogenation
; Nickel
; Nickel alloys
; Phenols
; Ruthenium
; Bimetallic catalysts
; Bimetallic particles
; Carbon and hydrogens
; DFT calculation
; Gas phase products
; Phenol hydrogenation
; Supercritical water
; Supercritical water gasification
; Ruthenium alloys
; aluminum oxide
; carbon
; cyclohexanone
; deionized water
; hydrogen
; nickel
; phenol
; ruthenium
; water
; alloy
; carbon
; catalysis
; catalyst
; hydrogen
; nickel
; particle size
; performance assessment
; phenolic compound
; reduction
; ruthenium
; water
; Article
; catalyst
; density functional theory
; gasification
; hydrogenation
; oligomerization
; oxidation
; priority journal
; total organic carbon
英文摘要: Incorporating Ru in a Ni catalyst for gasification of phenol in supercritical water at 450 °C and 30 min promoted formation of cyclohexanol via hydrogenation, which is a key step toward gasification. Both Ni and Ni-Ru catalysts were effective to reduce the formation of cyclohexanone and oligomerization products, compared with the case with no catalyst. H2 and CH4 yields increased as the Ru/Ni ratio increased, as did the carbon and hydrogen yields in the gas phase products. The Ni80Ru20/Al2O3 catalyst provided good gasification performance and it exhibits Ru (101), Ru (100) and Ni (111) facets and evidence of overlaid bimetallic particles. DFT calculations show that the presence of Ru (either as pure Ru or as a Ni-Ru alloy) reduces the energy barrier for phenol hydrogenation by close to 0.2 eV relative to pure Ni, and that the energy barrier is not as largely affected by the amount of Ru present, provided it is non-zero. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122024
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China; Pennsylvania State University, Department of Chemical Engineering, University ParkPA 16802, United States
Recommended Citation:
Zhang J.,Dasgupta A.,Chen Z.,et al. Supercritical water gasification of phenol over Ni-Ru bimetallic catalysts[J]. Water Research,2019-01-01