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A kind of material that selectively adsorbs platinum and its preparation method and application

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

Active Publication Date: 2021-10-08
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • 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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Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0033] (1) Wash the large hole silica spherical particles and the hydrochloric acid solution by volume ratio 1: 5, the mass concentration of the hydrochloric acid solution is to remove large pore silica spherical particles of surface impurities;

[0034] (2) Mixed ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the ultrasonic container, ultrasonic impregnation treatment is 5 min; solid-liquid separation, spherical silica filled with a platinum extractant is filled in a solid-liquid separation.

[0035] (3) Filling the spherical silicon having a platinum extractant from the well obtained by step (2) in a polyvinyl alcohol solution of 3.0%, soaking 18 h at 25 ° C; solid-liquid separation, Spherical silica particles containing platinum extractant were obtained by polyvinyl alcohol film;

[0036] (4) Soaked the spherical silica particles obtained by the polyvinyl alcohol film obtained by the polyvinyl alcohol film to the crosslinking agent saturated boric acid solution, crosslinking...

preparation Embodiment 2

[0049] The material of the selective adsorption of platinum is made of the following method:

[0050] (1) Wash the large hole silica spherical particles and the hydrochloric acid solution in a proportion of volume ratio of 1:10, filtration; the moral concentration of the hydrochloric acid solution is 25%;

[0051] (2) Mixed silica spherical particles to platinum extractant dodecyl trimethyl quaternium salt-oleic acid [N12111] [OLA], solvent ethanol is mixed in a ratio of 1:10:10 by volume ratio of 1:10:10. Further, the mixture is placed in an ultrasonic vessel in the ultrasonic vessel, and the ultrasonic power is 150 W, the ultrasonic impregnation treatment is 5 min; solid-liquid separation, the spherical silica filled with a platinum extractant is filled in the obtained well;

[0052] (3) Place the spherical silicon filled with a platinum extractant in the hole in a polyvinyl alcohol solution having a polyvinyl alcohol mass, so soaking 18 h at 25 ° C; filtered to obtain a polyvin...

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Abstract

A material for selectively adsorbing platinum and its preparation method and application. The material for selectively adsorbing platinum is made by the following method: using macroporous silica spherical particles as a matrix, and filling the matrix with a platinum extractant by ultrasonic impregnation In the hole, and then coated with a layer of polyvinyl alcohol film, and then soak the coated impregnated silica in the cross-linking agent solution to cross-link the polyvinyl alcohol, after solid-liquid separation, the coated impregnated silica Silicon oxide is repeatedly heated and cooled to vitrify the coating film, and a material that selectively adsorbs platinum is obtained. The preparation cost of the material for selectively adsorbing platinum is low, and it is used for efficient and selective enrichment of platinum in a solution containing high acidity and low concentration of platinum.

Description

Technical field [0001] The present invention relates to a functionalized adsorbent material and a preparation method thereof, in particular, a material comprising a selective adsorbed platinum and a preparation method thereof, and a material to which the selective adsorbed platinum is used to recover the hydrochloric acid medium. Method of platinum. Background technique [0002] Platinum has good ductility, stable thermoelectric, special catalytic and stable physical chemical properties, is widely used in electronics, catalytic and jewelry and other fields. [0003] At present, the development and utilization of platinum and its alloy materials is in the stage of rapid development, and platinum demand has increased year by year and presents a market situation in short supply. [0004] Tongyang polar is one of the main sources of platinum. At present, the platinum is recovered from the copper, mainly using a wet process, including solvent extraction, ion exchange, adsorption metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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