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Title: Electrochemical catalyst recovery method

Abstract

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. 3 figs.

Inventors:
;
Issue Date:
Research Org.:
Battelle Memorial Institute, Columbus, OH (United States)
OSTI Identifier:
63438
Patent Number(s):
5,420,088
Application Number:
PAN: 8-009,658
Assignee:
Battelle Memorial Inst., Richland, WA (United States)
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 30 May 1995
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; PETROLEUM REFINERIES; CATALYSTS; REGENERATION; MATERIALS RECOVERY; PROCESS SOLUTIONS; ELECTROCHEMICAL CELLS; OXIDATION; SOLUBILITY

Citation Formats

Silva, L J, and Bray, L A. Electrochemical catalyst recovery method. United States: N. p., 1995. Web.
Silva, L J, & Bray, L A. Electrochemical catalyst recovery method. United States.
Silva, L J, and Bray, L A. Tue . "Electrochemical catalyst recovery method". United States.
@article{osti_63438,
title = {Electrochemical catalyst recovery method},
author = {Silva, L J and Bray, L A},
abstractNote = {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. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {5}
}