Characterization of Au catalysts
| 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.date.updated | 2016-01-11T09:40:15Z | |
| 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.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.citation | Van Heerden, T;Hill, M;Case, J M;Van Steen, EWJ. (2012). Characterization of Au catalysts, 7A:527-533 | |
| 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 |
| dc.identifier.uri | http://hdl.handle.net/11427/24634 | |
| 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.language.iso | eng | |
| dc.publisher.department | Centre for Catalysis Research | en_ZA |
| dc.publisher.faculty | Faculty of Engineering and the Built Environment | |
| dc.publisher.institution | University of Cape Town | |
| 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 |
| uct.type.filetype | ||
| uct.type.filetype | Text | |
| uct.type.filetype | Image | |
| uct.type.publication | Research | en_ZA |
| uct.type.resource | Article | en_ZA |