Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for efficiently recovering platinum group precious metals from platinum-containing organic alcohol waste liquid

A technology of organic alcohols and precious metals, applied in the field of efficient recovery of platinum group precious metals, can solve the problems of poor product purity, low platinum recovery rate, unfriendly environment, etc., and achieve the effects of less environmental pollution, improved purity, and high reduction selectivity

Active Publication Date: 2022-04-05
SINOSTEEL ANHUI TIANYUAN TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for efficiently recovering platinum-group precious metals from platinum-containing organic alcohol waste liquid, so as to solve the problems of complex process, low platinum recovery rate, high energy consumption, unfriendly environment, poor product purity or issues such as danger

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for efficiently recovering platinum group precious metals from platinum-containing organic alcohol waste liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment adopts a method for efficiently recovering platinum group noble metals from platinum-containing organic alcohol waste liquid in the above-mentioned present invention; platinum-containing organic alcohol waste liquid sample 1 contains metal ions Pt, Ni, Fe, Mg, and is detected by ICP. The platinum ion concentration is 107ppm, the organic alcohol liquid is a complex of ethylene glycol and water, and the pH is 10.4. After the initial waste liquid is suction filtered to remove the waste residue, take 5L of the filtrate, and under continuous and thorough stirring, add 10wt% sulfuric acid to adjust the pH to 1.5, then add 7g of sodium citrate and 4g of ascorbic acid, and stir the reaction at 80°C 12h. After the reaction was completed, it was filtered, and the black precipitate was washed and roasted to obtain 0.459 g of simple platinum. The calculated recovery rate was 93.6%.

[0023] In terms of the purity of the noble metal obtained, the detected impurity c...

Embodiment 2

[0028] This embodiment adopts a method for efficiently recovering platinum group noble metals from platinum-containing organic alcohol waste liquid in the above-mentioned present invention; platinum-containing organic alcohol waste liquid sample 2 contains metal ions Pt, Pd, Zn, Fe, Ca, Mg, According to ICP detection, the platinum ion concentration is 40ppm, the palladium ion concentration is 53ppm, the organic alcohol liquid is a complex of methanol and ethanol, and the pH is 3.1. After the initial waste liquid is suction filtered to remove the waste residue, take 5L of the filtrate, and under continuous and thorough stirring, add 10wt% hydrochloric acid to adjust the pH to 1.0, then add 35g of ascorbic acid and 11g of citric acid, and stir for 80 hours at 30°C . After the reaction was completed, it was filtered, and the black precipitate was washed and roasted to obtain 0.371 g of mixed noble metal elemental substance of platinum and palladium. The recovery rate was calculat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for efficiently recovering platinum-group noble metals from platinum-containing organic alcohol waste liquid, relates to the technical field of organic chemistry, and aims to solve the problems of complex process, low recovery rate of platinum, high energy consumption, unfriendly environment and product failure in the existing method. Problems such as poor purity or danger; the present invention includes filtering the platinum-containing organic alcohol waste liquid, and obtaining a clarified filtrate after filtering out the filter residue, and adjusting its pH to between 1.0-2.0 with acid or lye; under constant stirring , add excessive weak reductant reaction in platinum-containing organic alcohol waste liquid, weak reductant is under the acidic condition of pH=1.0-2.0, and reduction potential can reduce metal mobility to platinum and other metals thereafter, but insufficient to reduce H + Reducing agent for metal before potential; filter the filtrate after reaction to obtain filter residue and tail liquid, wherein the filter residue is cleaned and roasted to obtain powdered platinum group noble metal; the recovery process of the present invention is simple, the process is short, the yield is high, and the purity is high , low cost, and has great industrial application value.

Description

technical field [0001] The invention relates to the technical field of organic chemistry, in particular to a method for efficiently recovering platinum group precious metals from platinum-containing organic alcohol waste liquid. Background technique [0002] Noble metal catalysts have high catalytic activity and can catalyze selective oxidation reactions, hydrogenation / dehydrogenation reactions, and isomerization reactions of various products. They are used in various industrial applications such as fine chemical manufacturing, aerospace, and electrochemical devices. have wide and important applications. However, since precious metal catalysts contain a large amount of precious metals such as platinum and palladium, the price is high, so the efficient recovery of platinum group metals in spent catalysts from industrial applications has high economic value, which will help companies greatly reduce production costs and improve Product profit. In industrial production, platin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22B11/00C22B7/00
CPCC22B11/048C22B7/007C22B7/008C22B7/006
Inventor 邓翔裴晓东骆艳华
Owner SINOSTEEL ANHUI TIANYUAN TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com