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Title: Formulations for iron oxides dissolution

Abstract

A mixture of a di- or polyphosphonic acid and a reductant wherein each is present in a sufficient amount to provide a synergistic effect with respect to the dissolution of metal oxides and optionally containing corrosion inhibitors and pH adjusting agents.

Inventors:
 [1];  [1]
  1. (Argonne, IL)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
868113
Patent Number(s):
US 5078894
Assignee:
Arch Development Corporation (Chicago, IL) ANL
DOE Contract Number:
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
formulations; iron; oxides; dissolution; mixture; di-; polyphosphonic; acid; reductant; sufficient; amount; provide; synergistic; effect; respect; metal; optionally; containing; corrosion; inhibitors; ph; adjusting; agents; sufficient amount; metal oxide; iron oxide; metal oxides; phosphonic acid; synergistic effect; polyphosphonic acid; ph adjusting; optionally containing; iron oxides; corrosion inhibitors; /510/252/

Citation Formats

Horwitz, Earl P., and Chiarizia, Renato. Formulations for iron oxides dissolution. United States: N. p., 1992. Web.
Horwitz, Earl P., & Chiarizia, Renato. Formulations for iron oxides dissolution. United States.
Horwitz, Earl P., and Chiarizia, Renato. Wed . "Formulations for iron oxides dissolution". United States. doi:. https://www.osti.gov/servlets/purl/868113.
@article{osti_868113,
title = {Formulations for iron oxides dissolution},
author = {Horwitz, Earl P. and Chiarizia, Renato},
abstractNote = {A mixture of a di- or polyphosphonic acid and a reductant wherein each is present in a sufficient amount to provide a synergistic effect with respect to the dissolution of metal oxides and optionally containing corrosion inhibitors and pH adjusting agents.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}

Patent:

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  • This patent describes a mixture of di- polyphosphonic acid and a reductant wherein each is present in a sufficient amount to provide a synergistic effect with respect to the dissolution of metal oxides and optionally containing corrosion inhibitors and pH adjusting agents.
  • This patent describes a method for producing a fuel from the pyrolysis of coal or oil shale. It comprises: pulverizing coal or oil shale, pulverizing iron oxide, subjecting the pulverized mixture to a mechanical load, and heating the mechanically loaded mixture to pyrolysis temperature in a gas atmosphere which is substantially inert to the mixture, so as to substantially prevent the mixture from swelling, to form a product fuel.
  • A method for producing a fuel from the pyrolysis of coal or oil shale in the presence of iron oxide in an inert gas atmosphere. The method includes the steps of pulverizing feed coal or oil shale, pulverizing iron oxide, mixing the pulverized feed and iron oxide, and heating the mixture in a gas atmosphere which is substantially inert to the mixture so as to form a product fuel, which may be gaseous, liquid and/or solid. The method of the invention reduces the swelling of coals, such as bituminous coal and the like, which are otherwise known to swell duringmore » pyrolysis.« less
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  • An inert anode for the electrolytic production of metals such as aluminum is disclosed. The inert anode includes a ceramic oxide material preferably made from NiO, Fe.sub.2 O.sub.3 and ZnO. The inert anode composition may comprise the following mole fractions of NiO, Fe.sub.2 O.sub.3 and ZnO: 0.2 to 0.99 NiO; 0.0001 to 0.8 Fe.sub.2 O.sub.3 ; and 0.0001 to 0.3 ZnO. The inert anode may optionally include other oxides and/or at least one metal phase, such as Cu, Ag, Pd, Pt, Au, Rh, Ru, Ir and/or Os. The Ni--Fe--Co--O ceramic material exhibits very low solubility in Hall cell baths usedmore » to produce aluminum.« less