Filtering of high-pressure hydrogenation catalysts

We use vacuum pumping, but be sure not to pump it completely dry, as it can catch fire! ! !

It depends on the particle size of the catalyst; a choice must be made based on the properties of the material and the catalyst’s particle size

The product I need is in the filtrate; failing to drain it will affect the yield.

We use nitrogen pressure filtration here; to prevent a fire, it’s sufficient to cut off the oxygen supply. It is recommended to use a nitrogen pressure of 0.2–0.3 MPa initially, and to employ vacuum extraction when drying is nearly complete. Decarbonization filters can also be considered.

A closed self-cleaning filter will do; it is driven by air pressure, and an explosion-proof control system can be used, so this issue can definitely be resolved

4# Tingyu Pavilion: You can wash it with the appropriate solvent! ! !

For hydrogenation catalysts, we use cotton pulp paper for filtration; both pressure filtration and vacuum filtration are feasible. But the filter iron needs to be soaked in water, and once it dries, it must be burned.

7#, I’ve tried the method you mentioned as well, but after being treated with organic solvents, palladium-on-carbon catalysts catch fire very easily when exposed to air. Nitrogen pressure filtration or sealed filtration should be able to solve the problem. Also, which member can provide the MSDS for the palladium carbon catalyst?

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