Aur yw popeth melyn
Mae ein catalydd, sydd newydd ei adnabod, â’r potensial i achub bywydau, gwella iechyd a glanhau’r amgylchedd.
Mae'r cynnwys isod ar gael yn Saesneg yn unig.
Mercury is used in the manufacture of over 20 million tonnes of vinyl chloride monomer (VCM) every year to create PVC, a non-biodegradable plastic used in everyday life. Mercury is not only in limited supply, but globally recognised as being seriously harmful to human health and the environment.
A 24 carat solution
Research undertaken in the Cardiff Catalysis Institute demonstrated for the first time that supported gold nanoparticles are a superior catalyst to mercury in the manufacture of VCM.
This important finding was commercially validated through a pilot plant trial in China, in collaboration with Johnson Matthey, a leading specialty chemicals company and Jacobs, a global construction company.
The discovery has changed the way in which gold catalysts are designed and has greatly increased their potential for commercial use.
Gold can save lives, improve health and clean up the environment
Gold has the potential to replace the harmful mercury catalyst used in the manufacture of over 20 million tonnes of vinyl chloride monomer (VCM) every year to create PVC.
Catalyst for change
China accounts for half of the world's total mercury emissions, with PVC manufacture being responsible for of over 60% of it. The success of our research has resulted in the commission of a full scale demonstration plant in China, which will be the first to replace the commercial mercury catalyst with gold.
The research has been used to inform policy by the China Council for International Cooperation on Environment and Development, directly impacting the mercury management processes in China.
Detholiad o gyhoeddiadau
- Kesavan, L. et al. 2011. Solvent-free oxidation of primary carbon-hydrogen bonds in toluene using Au-Pd alloy nanoparticles. Science 331 (6014), pp.195-199. (10.1126/science.1198458)
- Edwards, J. K. et al. 2009. Switching off hydrogen peroxide hydrogenation in the direct synthesis process. Science 323 (5917), pp.1037-1041. (10.1126/science.1168980)
- Herzing, A. A. et al., 2008. Identification of active gold nanoclusters on iron oxide supports for CO oxidation. Science 321 (5894), pp.1331-1335. (10.1126/science.1159639)
- Conte, M. et al., 2007. Hydrochlorination of acetylene using a supported gold catalyst: A study of the reaction mechanism. Journal of Catalysis 250 (2), pp.231-239. (10.1016/j.jcat.2007.06.018)
- Hughes, M. D. et al., 2005. Tunable gold catalysts for selective hydrocarbon oxidation under mild conditions. Nature 437 (7062), pp.1132-1135. (10.1038/nature04190)
This research was made possible through our close partnership with and support from: