Electrochemical catalyst recovery method
- Richland, WA
A method of recovering catalyst material from latent catalyst material solids includes: a) combining latent catalyst material solids with a liquid acid anolyte solution and a redox material which is soluble in the acid anolyte solution to form a mixture; b) electrochemically oxidizing the redox material within the mixture into a dissolved oxidant, the oxidant having a potential for oxidation which is effectively higher than that of the latent catalyst material; c) reacting the oxidant with the latent catalyst material to oxidize the latent catalyst material into at least one oxidized catalyst species which is soluble within the mixture and to reduce the oxidant back into dissolved redox material; and d) recovering catalyst material from the oxidized catalyst species of the mixture. The invention is expected to be particularly useful in recovering spent catalyst material from petroleum hydroprocessing reaction waste products having adhered sulfides, carbon, hydrocarbons, and undesired metals, and as well as in other industrial applications.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- DOE Contract Number:
- AC06-76RL01830
- Assignee:
- Battelle Memorial Institute (Richland, WA)
- Patent Number(s):
- US 5420088
- OSTI ID:
- 869908
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
catalyst
recovery
method
recovering
material
latent
solids
combining
liquid
acid
anolyte
solution
redox
soluble
form
mixture
electrochemically
oxidizing
dissolved
oxidant
potential
oxidation
effectively
reacting
oxidize
oxidized
species
reduce
expected
particularly
useful
spent
petroleum
hydroprocessing
reaction
waste
products
adhered
sulfides
carbon
hydrocarbons
undesired
metals
industrial
applications
recovery method
industrial applications
waste product
desired metal
latent catalyst
catalyst material
particularly useful
waste products
acid anolyte
catalyst recovery
undesired metals
spent catalyst
material solids
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