Characterization of Au catalysts

 

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dc.contributor.author Van Heerden, T
dc.contributor.author Hill, M
dc.contributor.author Case, J
dc.contributor.author Van Steen, E
dc.date.accessioned 2017-06-26T09:43:01Z
dc.date.available 2017-06-26T09:43:01Z
dc.date.issued 2012
dc.identifier.citation Van Heerden, T;Hill, M;Case, J M;Van Steen, EWJ. (2012). Characterization of Au catalysts, 7A:527-533
dc.identifier.uri http://hdl.handle.net/11427/24634
dc.description.abstract A range of supported gold catalysts was prepared by ion exchange, varying many of the preparation variables, including concentration in the precursor solution, washing procedure, as well as drying and calcination procedures. These catalysts have been characterized extensively. TEM images show essentially the same crystallite size distributions, between 2–5 nm, for almost all catalysts, the only exception being catalysts not washed in ammonia, which did not show any small crystallites. Additional characterization with SEM yielded an interesting discovery. Catalysts that appear identical on the TEM also contain some large crystallites in the range of 50–500 nm. Differences in dispersion due to the drying procedure not seen on the TEM can now be observed. Oxygen chemisorption is being investigated as an additional method to characterize gold based catalysts to complementthe typically used electron microscope techniques.
dc.language.iso eng
dc.source Journal of the South African Institute of Mining and Metallurgy
dc.source.uri http://www.saimm.co.za/publications/journal-papers
dc.title Characterization of Au catalysts
dc.type Journal Article en_ZA
dc.date.updated 2016-01-11T09:40:15Z
uct.type.publication Research en_ZA
uct.type.resource Article en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Centre for Catalysis Research en_ZA
uct.type.filetype
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Van Heerden, T., Hill, M., Case, J., & Van Steen, E. (2012). Characterization of Au catalysts. <i>Journal of the South African Institute of Mining and Metallurgy</i>, http://hdl.handle.net/11427/24634 en_ZA
dc.identifier.chicagocitation Van Heerden, T, M Hill, J Case, and E Van Steen "Characterization of Au catalysts." <i>Journal of the South African Institute of Mining and Metallurgy</i> (2012) http://hdl.handle.net/11427/24634 en_ZA
dc.identifier.vancouvercitation Van Heerden T, Hill M, Case J, Van Steen E. Characterization of Au catalysts. Journal of the South African Institute of Mining and Metallurgy. 2012; http://hdl.handle.net/11427/24634. en_ZA
dc.identifier.ris TY - Journal Article AU - Van Heerden, T AU - Hill, M AU - Case, J AU - Van Steen, E AB - A range of supported gold catalysts was prepared by ion exchange, varying many of the preparation variables, including concentration in the precursor solution, washing procedure, as well as drying and calcination procedures. These catalysts have been characterized extensively. TEM images show essentially the same crystallite size distributions, between 2–5 nm, for almost all catalysts, the only exception being catalysts not washed in ammonia, which did not show any small crystallites. Additional characterization with SEM yielded an interesting discovery. Catalysts that appear identical on the TEM also contain some large crystallites in the range of 50–500 nm. Differences in dispersion due to the drying procedure not seen on the TEM can now be observed. Oxygen chemisorption is being investigated as an additional method to characterize gold based catalysts to complementthe typically used electron microscope techniques. DA - 2012 DB - OpenUCT DP - University of Cape Town J1 - Journal of the South African Institute of Mining and Metallurgy LK - https://open.uct.ac.za PB - University of Cape Town PY - 2012 T1 - Characterization of Au catalysts TI - Characterization of Au catalysts UR - http://hdl.handle.net/11427/24634 ER - en_ZA


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