The mercury catalyst, usually 8-1 0% mercuric chloride on activated carbon, used
in this process is highly toxic.


Such toxicity creates problems arising from handling during
manufacture of the catalyst as well as during loading of catalyst and removing catalyst after a campaign.

Deactivation of gold catalysts still occurs, although it has been said that high loadings (> 1 wt%) of gold on carbon reduces deactivation.


Test for activity over time in hydrochlorination of acetylene.
12.0g of a catalyst as described in Example 1 (or Example 2) was loaded into a 7 mm diameter stainless steel tube, coiled so as to form a spiral shape, giving a bed length of 1 metre. Initially the sample was dried at 120°C under a stream of dry nitrogen.
https://patentimages.storage.googleapis.com/0c/e6/1a/1f64257...


cccccccccc
Przestawiono w nim wpływ czasu trwania reakcji oraz stężenia zasady oraz dowiedziono, że obecność platyny w katalizatorze bimetalicznym Pt-Au/C daje znacznie wyższą selektywność do DHA niż użycie katalizatora Au/C –
36% w porównaniu do 26%


Obecnie syntezuje się porowatą krzemionkę zawierającą inne metale np. złoto [97], srebro [98], cynę [99, 100], żelazo [101], mangan [102] czy cyrkon [103, 104].

http://phavi.umcs.pl/at/attachments/2015/0128/103652-adsorbe...


Au nanoparticles (AuNPs) supported on activated carbon (Au/C) were prepared by a modified chemical reduction method.

https://www.researchgate.net/publication/256698187_Synthesis...



Towards High Efficacy of Pd-Au/C Catalyst for Tetrachloromethane Hydrodechlorination

We present an efficient strategy for synthesising the PdAu catalysts with a homogeneous PdAu alloy phase for environmentally important hydrodechlorination of tetrachloromethane in the gas phase. The synthesis of carbon-supported catalysts involved two major steps: (i) incorporation of palladium and gold nanoparticles into carbon support and (ii) activation of the catalysts

https://www.mdpi.com/2624-8549/3/1/25