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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
关键词Raney-ni Melt-quenching H-2-pretreatment Hydrogenation Cyclohexanone
刊名APPLIED CATALYSIS A-GENERAL
2001-06-15
214期:1页:69-76
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine
类目[WOS]Chemistry, Physical ; Environmental Sciences
研究领域[WOS]Chemistry ; Environmental Sciences & Ecology
关键词[WOS]RAY PHOTOELECTRON-SPECTROSCOPY ; SURFACE-ANALYSIS ; HYDROGEN ; NICKEL
英文摘要In 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.
语种英语
WOS记录号WOS:000168765700006
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138831
专题中国科学院大连化学物理研究所
作者单位1.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
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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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