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Title: Binary ferrihydrite catalysts

A method of preparing a catalyst precursor comprises dissolving an iron salt and a salt of an oxoanion forming agent, in water so that a solution of the iron salt and oxoanion forming agent salt has a ratio of oxoanion/Fe of between 0.0001:1 to 0.5:1. Next is increasing the pH of the solution to 10 by adding a strong base followed by collecting of precipitate having a binary ferrihydrite structure. A binary ferrihydrite catalyst precursor is also prepared by dissolving an iron salt in water. The solution is brought to a pH of substantially 10 to obtain ferrihydrite precipitate. The precipitate is then filtered and washed with distilled water and subsequently admixed with a hydroxy carboxylic acid solution. The admixture is mixed/agitated and the binary ferrihydrite precipitate is then filtered and recovered.
 [1];  [1];  [1]
  1. (Lexington, KY)
Issue Date:
OSTI Identifier:
University of Kentucky Research Foundation (Lexington, KY) NETL
Patent Number(s):
US 5580839
Contract Number:
Research Org:
Consortium for Fossil Fuel Liquefaction Science, Lexington, KY (United States)
Country of Publication:
United States
binary; ferrihydrite; catalysts; method; preparing; catalyst; precursor; comprises; dissolving; iron; salt; oxoanion; forming; agent; water; solution; ratio; 0001; increasing; ph; 10; adding; strong; base; followed; collecting; precipitate; structure; prepared; brought; substantially; obtain; filtered; washed; distilled; subsequently; admixed; hydroxy; carboxylic; acid; admixture; mixed; agitated; recovered; catalyst precursor; comprises dissolving; acid solution; carboxylic acid; strong base; hydroxy carboxylic; oxoanion forming; distilled water; iron salt; forming agent; /502/