ES2526747B2 - Procedure for the preparation of supported gold catalysts of high load and high metal dispersion by impregnation techniques to incipient moisture starting from tetrachlorouric acid as a precursor - Google Patents

Procedure for the preparation of supported gold catalysts of high load and high metal dispersion by impregnation techniques to incipient moisture starting from tetrachlorouric acid as a precursor Download PDF

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Publication number
ES2526747B2
ES2526747B2 ES201300670A ES201300670A ES2526747B2 ES 2526747 B2 ES2526747 B2 ES 2526747B2 ES 201300670 A ES201300670 A ES 201300670A ES 201300670 A ES201300670 A ES 201300670A ES 2526747 B2 ES2526747 B2 ES 2526747B2
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Spain
Prior art keywords
precursor
procedure
sub
preparation
metal dispersion
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Active
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ES201300670A
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Spanish (es)
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ES2526747A1 (en
Inventor
José Manuel GATICA CASAS
Eloy RÍO SÁNCHEZ
José Juan Calvino Gámez
Juan Carlos HERNÁNDEZ GARRIDO
Manuel GARCÍA BASALLOTE
María Jesús FERNÁNDEZ-TRUJILLO REY
José Antonio PÉREZ OMIL
Miguel Ángel CAUQUI LÓPEZ
Diana GAONA SOTO
Serafín BERNAL MÁRQUEZ
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Universidad de Cadiz
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Universidad de Cadiz
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Priority to ES201300670A priority Critical patent/ES2526747B2/en
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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
    • 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
    • B01J23/52—Gold
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/864—Removing carbon monoxide or hydrocarbons
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

Procedimiento para la preparación de catalizadores de oro soportado de elevada carga y alta dispersión metálica mediante técnicas de impregnación a humedad incipiente partiendo de ácido tetracloroaúrico como precursor.#Se basa en el control de la especiación que sufre el precursor de oro por hidrólisis en disolución acuosa, mediante el control del pH, con el objetivo de minimizar la concentración de especies ricas en cloro ([AuCl{sub,4}]-) y hacer mayor la de especies con menor cantidad de cloro ([AuCl{sub,2}(OH){sub,2}]-).#Este procedimiento permite obtener catalizadores de oro soportado con alta dispersión metálica (tamaño de partícula promedio inferior a 1 nm y dispersión mayor de 80%) mediante técnicas simples de impregnación a humedad incipiente, a temperatura ambiente, con un alto grado de aprovechamiento del metal (92%) a partir de HAuCl{sub,4} comercial, y fácilmente escalables en cuanto a la cantidad a preparar.Procedure for the preparation of supported gold catalysts of high load and high metal dispersion by impregnating techniques to incipient moisture starting from tetrachlorouric acid as a precursor. # It is based on the control of the speciation suffered by the gold precursor by hydrolysis in aqueous solution , by controlling the pH, with the aim of minimizing the concentration of species rich in chlorine ([AuCl {sub, 4}] -) and increasing that of species with less chlorine ([AuCl {sub, 2} ( OH) {sub, 2}] -). # This procedure allows to obtain supported gold catalysts with high metal dispersion (average particle size less than 1 nm and dispersion greater than 80%) by simple impregnation techniques to incipient moisture, a room temperature, with a high degree of use of the metal (92%) from commercial HAuCl {sub, 4}, and easily scalable in terms of the quantity to be prepared.

Description

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Claims (1)

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ES201300670A 2013-07-13 2013-07-13 Procedure for the preparation of supported gold catalysts of high load and high metal dispersion by impregnation techniques to incipient moisture starting from tetrachlorouric acid as a precursor Active ES2526747B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES201300670A ES2526747B2 (en) 2013-07-13 2013-07-13 Procedure for the preparation of supported gold catalysts of high load and high metal dispersion by impregnation techniques to incipient moisture starting from tetrachlorouric acid as a precursor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201300670A ES2526747B2 (en) 2013-07-13 2013-07-13 Procedure for the preparation of supported gold catalysts of high load and high metal dispersion by impregnation techniques to incipient moisture starting from tetrachlorouric acid as a precursor

Publications (2)

Publication Number Publication Date
ES2526747A1 ES2526747A1 (en) 2015-01-14
ES2526747B2 true ES2526747B2 (en) 2015-07-31

Family

ID=52273637

Family Applications (1)

Application Number Title Priority Date Filing Date
ES201300670A Active ES2526747B2 (en) 2013-07-13 2013-07-13 Procedure for the preparation of supported gold catalysts of high load and high metal dispersion by impregnation techniques to incipient moisture starting from tetrachlorouric acid as a precursor

Country Status (1)

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Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1776187A1 (en) * 2004-07-06 2007-04-25 University College Cardiff Consultants, Ltd. Supported gold catalysts
GB201111819D0 (en) * 2011-07-11 2011-08-24 Johnson Matthey Plc Catalyst and method for its preparation

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ES2526747A1 (en) 2015-01-14

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