A Microstructural Investigation of Gas Atomized Raney Type Al-27.5 at.%Ni Catalyst Precursor Alloys

Article English OPEN
Mullis, AM ; Bigg, TD ; Adkins, NJ (2015)
  • Publisher: Elsevier

Quantitative image analysis has been used to investigate the phase composition of gas atomized powders of a Raney type Ni catalyst precursor alloys of composition Al-27.5 at.% Ni in the powder size range 150-212 μm. We find that there are considerable variations in phase composition both between powders from the same batch and as a function distance from the particle surface within individual particles. Such variations may have significant implications for the future production and uptake of such catalysts, including the necessity for post-production crushing of gas atomized powders. Models are proposed to account for both variations.
  • References (26)
    26 references, page 1 of 3

    [1] S.R. Montgomery, Catalysis of Organic Reactions, Marcel Dekker, New York, 1981.

    [2] Catalytic hydrogenation of carboxylic acids and esters, in, Kyowa Hakko Kogyo Co. Ltd., GB, 1966.

    [3] R.J. Allain, V.L. Seale, Acrylonitrile hydrolysis and catalyst useful therefor, in, Nalco Chemical Co., US, 1975.

    [4] M. Raney, Method of producing finely-divided nickel, in, US, 1927.

    [5] P. Fouilloux, G.A. Martin, A.J. Renouprez, B. Moraweck, B. Imelik, M. Prettre, Texture and structure of Raney nickel, J. Catal., 25 (1972) 212-222.

    [6] F. Devred, A.H. Gieske, N. Adkins, U. Dahlborg, C.M. Bao, M. Calvo-Dahlborg, J.W. Bakker, B.E. Nieuwenhuys, Influence of phase composition and particle size of atomised Ni-Al alloy samples on the catalytic performance of Raney-type nickel catalysts, Appl. Catal. A, 356 (2009) 154-161.

    [7] A.B. Fasman, V.F. Timofeeva, V.N. Rechkin, Y.F. Klyuchnikov, I.A. Sapukov, Effect of the composition of a nickel-aluminum alloy on the structure and specific activity of a Raney nickel catalyst, Kinet. Katal., 13 (1972) 1513-1519.

    [8] R. Wang, H. Chen, Z. Lu, S. Qiu, T. Ko, Structural transitions during aluminum leaching of NiAl3 phase in a Raney Ni-Al alloy, J. Mater. Sci., 43 (2008) 5712-5719.

    [9] A.J. Smith, D.L. Trimm, The preparation of skeletal catalysts, Annu. Rev. Mater. Res., 35 (2005) 127-147.

    [10] M.L. Bakker, D.J. Young, M.S. Wainwright, Selective leaching of nickelaluminum (NiAl3 and Ni2Al3) intermetallics to form Raney nickels, J. Mater. Sci., 23 (1988) 3921-3926.

  • Metrics
    views in OpenAIRE
    views in local repository
    downloads in local repository

    The information is available from the following content providers:

    From Number Of Views Number Of Downloads
    White Rose Research Online - IRUS-UK 0 114
Share - Bookmark