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Material for selectively adsorbing platinum and preparation method and application thereof

A selectivity and extractant technology, applied in chemical instruments and methods, other chemical processes, process efficiency improvement, etc., can solve problems such as low recovery rate, loss of extractant, long process flow, etc., and achieve low cost and easy separation , the effect of large adsorption capacity

Active Publication Date: 2021-01-12
CENT SOUTH UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The further technical problem to be solved in the present invention is to use the material for selectively adsorbing platinum to efficiently and selectively extract platinum from a high-acidity, low-concentration platinum-containing solution, so as to effectively solve the problem of long existing technological process, low recovery rate, Problems such as loss of extractant

Method used

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Effect test

preparation Embodiment 1

[0033] (1) Washing the macroporous spherical silica particles and the hydrochloric acid solution at a ratio of 1:5 by volume for 8 h, the mass concentration of the hydrochloric acid solution is such that the macroporous spherical silica particles are removed from the surface impurities;

[0034] (2) Mix the macroporous silica spherical particles with the palladium extractant tetraoctyl quaternary ammonium salt-oleic acid [N8888][OLA], and the solvent ether in a ratio of 1:10:10 by volume, and place In an ultrasonic container, under the condition of ultrasonic power of 100 W and 20 ℃, ultrasonic impregnation for 5 minutes; solid-liquid separation, to obtain spherical silica filled with platinum extractant in the pores;

[0035] (3) Put the spherical silica filled with the platinum extractant in the pores obtained in step (2) in a polyvinyl alcohol solution with a mass fraction of 3.0% polyvinyl alcohol, and soak at 25 °C for 18 h; solid-liquid separation, Spherical silicon diox...

preparation Embodiment 2

[0049] The material for selectively adsorbing platinum in this embodiment is made by the following method:

[0050] (1) Wash the macroporous silica spherical particles and hydrochloric acid solution at a volume ratio of 1:10 for 8 hours, and filter; the mass concentration of the hydrochloric acid solution is 25%;

[0051] (2) Mix macroporous silica spherical particles with platinum extractant dodecyltrimethylquaternary ammonium salt-oleic acid [N12111][OLA], and solvent ethanol in a ratio of 1:10:10 by volume , and then place the mixture in an ultrasonic vessel, and perform ultrasonic impregnation treatment for 5 min under the conditions of ultrasonic power of 150 W and temperature of 20°C; solid-liquid separation, to obtain spherical silica filled with platinum extractant in the pores;

[0052] (3) Put the spherical silica filled with platinum extractant in the pores in a polyvinyl alcohol solution with a mass fraction of 3.0% polyvinyl alcohol, soak for 18 h at 25°C; coated...

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Abstract

The invention relates to a material for selectively adsorbing platinum and a preparation method and application of the material, and the material for selectively adsorbing platinum is prepared by thefollowing method: taking macroporous silicon dioxide spherical particles as a matrix, filling a platinum extracting agent into pores of the matrix in an ultrasonic impregnation manner, and then coating a layer of polyvinyl alcohol film, the soaking the coated impregnated silicon dioxide in a crosslinking agent solution to crosslink polyvinyl alcohol, carrying out solid-liquid separation, and repeatedly heating and cooling the coated impregnated silicon dioxide to vitrify the coating film, thereby obtaining the material capable of selectively adsorbing platinum. The material for selectively adsorbing platinum is low in preparation cost, is used for efficiently and selectively enriching platinum in a high-acidity and low-concentration platinum-containing solution, is short in process flow and high in recovery rate, and does not have the problems of loss of an extracting agent and the like.

Description

technical field [0001] The present invention relates to a functionalized adsorption material and its preparation method and application, in particular to a material which can selectively adsorb platinum and its preparation method, and the recovery of hydrochloric acid contained in the material by using the material which can selectively adsorb platinum. platinum method. Background technique [0002] Platinum has good ductility, stable thermoelectricity, special catalysis and stable physical and chemical properties, and is widely used in the fields of electronics, catalysis and jewelry. [0003] At present, the development and utilization of platinum and its alloy materials are in a stage of rapid development, and the demand for platinum is increasing year by year, presenting a market situation in which supply exceeds demand. [0004] Copper anode slime is one of the main sources of platinum. At present, the recovery of platinum from copper anode slime mainly adopts wet pro...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28C22B7/00C22B11/00B01J20/30
CPCB01J20/103B01J20/267B01J20/28019C22B7/005C22B11/042Y02P10/20
Inventor 郭学益马钟琛李栋田庆华许志鹏邹铭金
Owner CENT SOUTH UNIV
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