Reactors For Precious Metal Catalyst That Stir?

[CryoThio]

Is this even possible? Under the hydrogenation link posted here, it says it is not, however I find parr shakers don't come in big sizes that the big dogs in the Netherlands require. They put out hundreds of kilos a day, and parr shakers, as far as I know, are just not going to do that. Despite this, precious metal catalysts are super popular over there, as shown by their own internal reports on the drug trade.

So what gives? How do the big dogs use precious metal catalysts to produce mdma, etc, but seemingly don't use par shakers?

 

[however527]

hi, I'm looking for a reactor for 4cmc for 100 and 300 liters is the same as for 4mmc but I can not find it on the forum, I'm from Polish if you can send me a link to the section I am interested in I will be very grateful, the reactor can be homemade

 

[HerrHaber]

I honestly hope Parr type of hydrogenation bomb was out of your thoughts where it should stay unless you are with the heavy chemical industry. I highly recommend fluidised bed reactors such as catalyst filled columns kept at optimal conditions and recirculated if needed until full conversion, the small lab-scale setups are well constructed from an old HPLC where only the columns need to be prepared and can be switched back to analytical function. Of course a flow of hydrogen also needs to be provided so on the context of scale-up for this particular step I would use a multiple series of gravitationally oriented flow of liquid and inverse dispersal of super fine H2 bubbles that are absorbed in reaction and when they start exiting it indicates possible saturation of product.

 

[HerrHaber]

H2 gas isn't the only possible hydrogen source in a Pd/C CTH type reaction, ammonium formate also works in some cases, I didn't say it's the best suited for your plans but there are many other approaches.