Preparation of novel Raney-Ni catalysts and characterization by XRD, SEM and XPS
Lei, H; Song, Z; Tan, DL; Bao, XH; Mu, XH; Zong, BN; Min, EZ
KeywordRaney-ni Melt-quenching H-2-pretreatment Hydrogenation Cyclohexanone
Indexed BySCI
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
WOS SubjectChemistry, Physical ; Environmental Sciences
WOS Research AreaChemistry ; Environmental Sciences & Ecology
AbstractIn the present paper, we report on a novel procedure for preparing high performance Raney-Ni catalysts, which includes preparation of NI-AI ribbons by melt-quenching. pretreatment with hydrogen and activation through Al leaching with sodium hydroxide solution. The resultant catalyst exhibits about five times high activity in the catalytic hydrogenation of cyclohexanone than that of the Raney-Ni catalyst obtained by a conventional preparation method. The structural variations of the catalyst caused by the different pretreatments were characterized by XRD. SEM and XPS. As demonstrated, melt-quenching and H-2-pretreatment play a crucial role for forming the certain structure being composed of a high density of Ni2Al3 phase. which, in the subsequent leaching process. benefit to form ultra-uniform Raney-Ni catalyst with large surface areas. Metallic Al in hydrogen-pretreated alloys appears to be more easily leached, remaining aluminum as the dominant Al-related species on the surface, which acts as a matrix stabilizing the highly dispersed Ni and consequently improving the activity of cyclohexanone hydrogenation. (C) 2001 Elsevier Science B.V. All rights reserved.
WOS IDWOS:000168765700006
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Cited Times:44[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Res Inst Petr Proc, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Lei, H,Song, Z,Tan, DL,et al. Preparation of novel Raney-Ni catalysts and characterization by XRD, SEM and XPS[J]. APPLIED CATALYSIS A-GENERAL,2001,214(1):69-76.
APA Lei, H.,Song, Z.,Tan, DL.,Bao, XH.,Mu, XH.,...&Min, EZ.(2001).Preparation of novel Raney-Ni catalysts and characterization by XRD, SEM and XPS.APPLIED CATALYSIS A-GENERAL,214(1),69-76.
MLA Lei, H,et al."Preparation of novel Raney-Ni catalysts and characterization by XRD, SEM and XPS".APPLIED CATALYSIS A-GENERAL 214.1(2001):69-76.
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