WO2002055191A1 - Adsorbant sélectif pour métaux nobles du groupe du platine - Google Patents

Adsorbant sélectif pour métaux nobles du groupe du platine Download PDF

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Publication number
WO2002055191A1
WO2002055191A1 PCT/JP2000/009324 JP0009324W WO02055191A1 WO 2002055191 A1 WO2002055191 A1 WO 2002055191A1 JP 0009324 W JP0009324 W JP 0009324W WO 02055191 A1 WO02055191 A1 WO 02055191A1
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WO
WIPO (PCT)
Prior art keywords
platinum group
group noble
nicotinamide
adsorbent
noble metals
Prior art date
Application number
PCT/JP2000/009324
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English (en)
Japanese (ja)
Inventor
Hiroyuki Sano
Original Assignee
Muromachi Chemical Co., Ltd.
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 Muromachi Chemical Co., Ltd. filed Critical Muromachi Chemical Co., Ltd.
Priority to PCT/JP2000/009324 priority Critical patent/WO2002055191A1/fr
Publication of WO2002055191A1 publication Critical patent/WO2002055191A1/fr

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    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
    • B01J20/3204—Inorganic carriers, supports or substrates
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
    • B01J20/3244—Non-macromolecular compounds
    • B01J20/3246—Non-macromolecular compounds having a well defined chemical structure
    • B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
    • B01J20/3251—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such comprising at least two different types of heteroatoms selected from nitrogen, oxygen or sulphur
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
    • B01J20/3244—Non-macromolecular compounds
    • B01J20/3246—Non-macromolecular compounds having a well defined chemical structure
    • B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
    • B01J20/3255—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such comprising a cyclic structure containing at least one of the heteroatoms nitrogen, oxygen or sulfur, e.g. heterocyclic or heteroaromatic structures

Definitions

  • the present invention relates to a selective adsorbent for platinum group noble metals using nicotinamide and a method for selectively adsorbing platinum group noble metals using this adsorbent.
  • Conventional technology :
  • Platinum group noble metals include platinum, palladium, rhodium, iridium, ruthenium, and osmium. It is a scientifically stable and precious white metal. Platinum group precious metals are decoration, catalysts for chemical reactions, automobile exhaust gas treatment, electrolysis, electrodes and decorations for soda industry, plating for reflectors and electrical contacts, printing board plating for electronics products, dental treatment metals, pharmaceuticals It is a valuable natural resource because it is used as a raw material and is a scarce resource. To this end, technologies for efficient recovery from solutions containing small amounts of these metals and industrial wastewater in the mining industry are being studied. For example,
  • Patent No. 297282886 Selective agent for palladium and method for selective extraction and recovery of palladium, (2) Activated carbon supported on quinone at the lip end, (3) Using ion exchange resin, etc. It has been known. These existing means are limited to palladium in their properties (1), their performance is diminished due to the mixture of base metals (2), and their separation methods include organic solvents such as toluene, chloro-form (1), There were drawbacks, such as a decrease in performance due to the coexistence of other ions (3). Disclosure of the invention
  • the present invention is not limited to palladium alone, but selectively covers a wide range of platinum group noble metals. It is hardly affected by the mixture of alkali metals such as sodium and potassium, alkaline earth metals such as calcium, base metals such as iron, copper, lead, nickel and zinc.
  • alkali metals such as sodium and potassium
  • alkaline earth metals such as calcium
  • base metals such as iron, copper, lead, nickel and zinc.
  • the purpose is to establish a separation system that satisfies the requirements of not requiring a solvent, being reusable, being economically inexpensive, and not polluting the environment and being safe.
  • the present inventor has conducted intensive experiments on the production of platinum group-based noble metals in the mining industry and the recovery from used industrial wastewater, and found that nicotinamide can bind to these platinum group-based noble metals with specific affinity. Inventing a means by which nicotinamide can be added to a platinum-group noble metal solution and bound to it, or a platinum-group noble metal can be separated by using nicotinamide as a solid phase in advance. It reached.
  • the present invention is a platinum group noble metal selective adsorbent containing nicotinamide as an active ingredient.
  • the present invention is a method for selectively adsorbing a platinum group noble metal with an adsorbent containing nicotinamide as an active ingredient. Furthermore, nicotinamide is used as a selective adsorbent for platinum group noble metals.
  • the platinum group noble metal is adsorbed from an aqueous solution containing a platinum group noble metal as a metal ion or a metal complex or an organic solvent solution of an organic platinum group noble metal.
  • the present invention is a method for selectively recovering a platinum group noble metal from a liquid such as industrial waste liquid using an adsorbent containing nicotinamide as an active ingredient.
  • Platinum group noble metals specifically include palladium, platinum, rhodium, iridium, osmium or ruthenium.
  • the adsorbent of the present invention preferably contains nicotinamide as activated carbon or a resin as a carrier.
  • Nicotinamide is a white crystal or crystalline powder having the molecular formula C 6 H 6 N 20 and a molecular weight of 122.13, has no smell and taste is bitter. It is easily soluble in water or ethanol, and hardly soluble in ether. It is a vitamin for the living body and is a safe compound listed in the Japanese Pharmacopoeia as a pharmaceutical.
  • nicotinamide is converted into an insoluble solid beforehand. It is effective to carry it on a solid phase.
  • the carrier as a means for converting nicotinamide into a solid phase is not particularly limited as long as it is insoluble in a target solvent such as resin, activated carbon, chitosan, and CNBr-activated sepharose.
  • a target solvent such as resin, activated carbon, chitosan, and CNBr-activated sepharose.
  • a target solvent such as resin, activated carbon, chitosan, and CNBr-activated sepharose.
  • activated carbon is used as the carrier, this is immersed in an aqueous solution of nicotinamide, washed with water and dried. Drying is performed at 100 to 120 ° C. The type of activated carbon is not particularly selected. The dried product is packed in a column, and the aqueous solution containing the platinum group noble metal is passed upward through this at a flow rate of about 1 to 20 for 1 to 2 hours in an acidic state.
  • Figure 1 shows a conceptual diagram of the device.
  • the adsorption characteristics differ depending on the type of platinum group noble metal, but treatment of 10 to 50 liters of a solution of 100 ppm of platinum group noble metal per 1 liter of adsorbent:! OOOOppm is appropriate.
  • Alkali metals and base metals have no or negligible levels of adsorption.
  • Metals other than platinum group noble metals such as tin are released by washing with a strong acid of 0.5 to 1Mol / L, so they can be removed without desorption of platinum group noble metals.
  • the platinum group noble metal is recovered by elution with a chemical.
  • the present invention uses a nicotinamide having a specific adsorption characteristic for a platinum group noble metal as a solid phase to convert a rare group platinum group noble metal into an aqueous or organic solution. Can be separated from The feature of the present invention is that the effects of the mixture of base metals, alkali metals, and alkaline earth metals can be neglected in its performance, and there are disadvantageous problems such as its recovery and organic waste liquid treatment because no organic solvent is used. It provides excellent production methods from the viewpoint of performance, economy, environment and conservation. BRIEF DESCRIPTION OF THE DRAWINGS:
  • FIG. 1 shows an embodiment of an apparatus for separating platinum group noble metals using a nicotinamide-supported activated carbon column.
  • Example 1 Examples of the present invention will be sequentially described with respect to a selective extraction agent for platinum group noble metals using nicotinamide and a method for selective extraction of platinum group noble metals using this extractant.
  • Example 1
  • Example 2 50 g of activated carbon NORIT ROX 0.8 was added to 100 ml of 1 N hydrochloric acid, stirred, washed with purified water, and dried at 120 ° C. This was immersed in 100 ml of a 10% nicotinamide solution, washed with three times the amount of purified water, and dried at 120 ° C for 5 hours to prepare 60 g of dicotinamide-supported activated carbon using activated carbon as a carrier.
  • Example 2 50 g of activated carbon NORIT ROX 0.8 was added to 100 ml of 1 N hydrochloric acid, stirred, washed with purified water, and dried at 120 ° C. This was immersed in 100 ml of a 10% nicotinamide solution, washed with three times the amount of purified water, and dried at 120 ° C for 5 hours to prepare 60 g of dicotinamide-supported activated carbon using activated carbon as a carrier.
  • Example 2 50 g of activated carbon NORIT ROX
  • Adsorption characteristics of platinum-group noble metal-specific adsorbents Adsorption characteristics of each platinum-group noble metal solution We compared the adsorption characteristics of activated carbon NORIT ROX 0.8 with that of nicotinamide-supported activated carbon for each platinum-group noble metal solution.
  • a column with a volume of 49.5 ml was packed with 2.0 ml of activated carbon or 2.0 ml of activated carbon loaded with nicotinamide.
  • the column was prepared by adjusting a standard solution for atomic absorption of palladium, platinum, rhodium, osmium, iridium and ruthenium (100 ppm) to 500 ppm with 1 M-HC1. The solution was passed for minutes. Using a spectrophotometer, measure the concentration of each platinum group noble metal at a wavelength of 420 nm using a spectrophotometer, and calculate the amount of adsorption by subtraction from each platinum group noble umbrella stock solution. The characteristics of activated carbon loaded with nicotinamide were compared with those of activated carbon.
  • the absorbance before passing through was unstable due to the properties of organic palladium and was a thick dark brown color.However, the absorbance after passing through was the same as that of the blank, and the organic palladium was collected below the measurement limit of the spectrophotometer. Was admitted.

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

La présente invention concerne un adsorbant sélectif pour métaux nobles du groupe du platine, lequel adsorbant comporte du nicotinamide comme agent actif. Cet adsorbant est à base de carbone actif garni de nicotinamide. Il est capable d'adsorber de façon très sélective les métaux nobles du groupe du platine à partir d'un système comprenant, non seulement ces métaux nobles du groupe du platine, mais aussi d'autres métaux de base et d'autres métaux nobles. En outre, il a l'avantage de n'avoir aucun effet nocif sur l'environnement.
PCT/JP2000/009324 2000-12-27 2000-12-27 Adsorbant sélectif pour métaux nobles du groupe du platine WO2002055191A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/009324 WO2002055191A1 (fr) 2000-12-27 2000-12-27 Adsorbant sélectif pour métaux nobles du groupe du platine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/009324 WO2002055191A1 (fr) 2000-12-27 2000-12-27 Adsorbant sélectif pour métaux nobles du groupe du platine

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WO2002055191A1 true WO2002055191A1 (fr) 2002-07-18

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153117A (ja) * 1984-08-18 1986-03-17 Agency Of Ind Science & Technol 貴金属元素の回収方法
JPH03216178A (ja) * 1990-01-17 1991-09-24 Daicel Chem Ind Ltd たばこ煙用フィルター
JPH03262531A (ja) * 1990-03-12 1991-11-22 Tanaka Kikinzoku Kogyo Kk 溶離特性に優れる白金及びパラジウムの吸着物質並びにそれを使った白金及び／又はパラジウムの回収方法
US5115036A (en) * 1988-04-28 1992-05-19 Sumitomo Chemical Co., Ltd. Metallic ion sorber
JPH08103652A (ja) * 1994-10-06 1996-04-23 Tanaka Kikinzoku Kogyo Kk 白金及び／又はパラジウムの吸着剤並びに回収方法
JPH09173834A (ja) * 1995-12-21 1997-07-08 Chiyoda Corp 貴金属吸着剤及び貴金属の回収方法
JPH1017953A (ja) * 1996-07-04 1998-01-20 Tanaka Kikinzoku Kogyo Kk ロジウムの吸着剤、吸着方法及び該吸着剤の製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153117A (ja) * 1984-08-18 1986-03-17 Agency Of Ind Science & Technol 貴金属元素の回収方法
US5115036A (en) * 1988-04-28 1992-05-19 Sumitomo Chemical Co., Ltd. Metallic ion sorber
JPH03216178A (ja) * 1990-01-17 1991-09-24 Daicel Chem Ind Ltd たばこ煙用フィルター
JPH03262531A (ja) * 1990-03-12 1991-11-22 Tanaka Kikinzoku Kogyo Kk 溶離特性に優れる白金及びパラジウムの吸着物質並びにそれを使った白金及び／又はパラジウムの回収方法
JPH08103652A (ja) * 1994-10-06 1996-04-23 Tanaka Kikinzoku Kogyo Kk 白金及び／又はパラジウムの吸着剤並びに回収方法
JPH09173834A (ja) * 1995-12-21 1997-07-08 Chiyoda Corp 貴金属吸着剤及び貴金属の回収方法
JPH1017953A (ja) * 1996-07-04 1998-01-20 Tanaka Kikinzoku Kogyo Kk ロジウムの吸着剤、吸着方法及び該吸着剤の製造方法

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