WO2014122574A3 - Process of activation of metal silver - Google Patents

Process of activation of metal silver Download PDF

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Publication number
WO2014122574A3
WO2014122574A3 PCT/IB2014/058773 IB2014058773W WO2014122574A3 WO 2014122574 A3 WO2014122574 A3 WO 2014122574A3 IB 2014058773 W IB2014058773 W IB 2014058773W WO 2014122574 A3 WO2014122574 A3 WO 2014122574A3
Authority
WO
WIPO (PCT)
Prior art keywords
silver
metal silver
ions
metal
salified
Prior art date
Application number
PCT/IB2014/058773
Other languages
French (fr)
Other versions
WO2014122574A2 (en
Inventor
Angelo Ramponi
Sandro RECCHIA
Original Assignee
Conceria Stefania S.P.A.
Università Degli Studi Dell'insubria
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Conceria Stefania S.P.A., Università Degli Studi Dell'insubria filed Critical Conceria Stefania S.P.A.
Publication of WO2014122574A2 publication Critical patent/WO2014122574A2/en
Publication of WO2014122574A3 publication Critical patent/WO2014122574A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/12—Oxidising
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16—Heavy metals; Compounds thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/48—Silver or gold
    • B01J23/50—Silver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/03—Precipitation; Co-precipitation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Agronomy & Crop Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Pens And Brushes (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Materials For Medical Uses (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

The present invention relates to a process for surface antibacterial activation of metal silver comprising the following steps: a) oxidative aggression in an acid aqueous environment of a portion of the surface of the metal silver with formation of silver ions; b) raising the pH value and adjusting the redox potential of the material in the suspension obtained in step a); c) fixing the silver ions in the form of insoluble or slightly soluble, inorganic and organic salts on the surface of the metal silver as treated in step a) by the addition of a precipitating reagent corresponding to the insoluble or slightly soluble, inorganic or organic silver salt of interest; d) drying the metal silver coated by salified ions as obtained in step c); e) further optional step of partial chemical reduction of the salified silver ions present on the surface of the metal silver.
PCT/IB2014/058773 2013-02-11 2014-02-04 Process of activation of metal silver WO2014122574A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000191A ITMI20130191A1 (en) 2013-02-11 2013-02-11 METALLIC SILVER ACTIVATION PROCEDURE
ITMI2013A000191 2013-02-11

Publications (2)

Publication Number Publication Date
WO2014122574A2 WO2014122574A2 (en) 2014-08-14
WO2014122574A3 true WO2014122574A3 (en) 2014-11-20

Family

ID=48096010

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/058773 WO2014122574A2 (en) 2013-02-11 2014-02-04 Process of activation of metal silver

Country Status (2)

Country Link
IT (1) ITMI20130191A1 (en)
WO (1) WO2014122574A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107008463A (en) * 2017-03-30 2017-08-04 常州大学 A kind of silver metavanadate is combined the preparation method of silver bromide photochemical catalyst
IT202000006421A1 (en) * 2020-03-26 2021-09-26 Invent S R L PERFECTED MASK

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050008861A1 (en) * 2003-07-08 2005-01-13 Nanoproducts Corporation Silver comprising nanoparticles and related nanotechnology
WO2006026026A2 (en) * 2004-07-30 2006-03-09 Acrymed, Inc. Antimicrobial silver compositions
WO2009132798A1 (en) * 2008-04-30 2009-11-05 Politecnico Di Milano Method of manufacturing natural or synthetic fibres containing silver nano-particles
WO2011039786A1 (en) * 2009-10-01 2011-04-07 Conceria Stefania S.P.A. Method for treatment of a semimanufactured product made of leather or similar material and item resulting thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050008861A1 (en) * 2003-07-08 2005-01-13 Nanoproducts Corporation Silver comprising nanoparticles and related nanotechnology
WO2006026026A2 (en) * 2004-07-30 2006-03-09 Acrymed, Inc. Antimicrobial silver compositions
WO2009132798A1 (en) * 2008-04-30 2009-11-05 Politecnico Di Milano Method of manufacturing natural or synthetic fibres containing silver nano-particles
WO2011039786A1 (en) * 2009-10-01 2011-04-07 Conceria Stefania S.P.A. Method for treatment of a semimanufactured product made of leather or similar material and item resulting thereof

Also Published As

Publication number Publication date
ITMI20130191A1 (en) 2014-08-12
WO2014122574A2 (en) 2014-08-14

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