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

A kind of recovery method of rhodium catalyst

The technology of a rhodium catalyst and a recovery method is applied in the direction of improving the process efficiency, etc., and can solve the problems of low recovery rate of rhodium, complicated process and the like, and achieve the effect of high efficiency and quickness of the recovery method.

Inactive Publication Date: 2015-10-28
HAO HUA CHENGDU TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to: provide a kind of simple, efficient rhodium recovery method, to overcome the defective that original recovery method technique is complicated or / and rhodium recovery rate is low

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take by weighing 200.0 milliliters of catalyst waste liquid containing rhodium 3.1 mg / ml, wherein containing 0.62 grams of rhodium, add 0.4338 grams of elemental magnesium, heat and stir at 60 ° C for 1 hour, then add 4.4 grams of 10% hydrochloric acid to dissolve residual magnesium, After 2 hours, the upper liquid was decanted, and the remaining solid was dried at 100°C to obtain 0.6116 g, with a rhodium recovery rate of 98.65%.

Embodiment 2

[0017] Weigh 200.0 milliliters of catalyst waste liquid containing rhodium 3.1 mg / ml, wherein contains 0.62 grams of rhodium, add 0.1193 grams of elemental aluminum, heat and stir at 100 ° C for 3 hours, then add 0.22 grams of 10% hydrochloric acid to dissolve residual aluminum, After 2 hours, the upper liquid was decanted, and the remaining solid was dried at 100°C to obtain 0.6083 g, with a rhodium recovery rate of 98.11%.

Embodiment 3

[0019] Take by weighing 200.0 milliliters of catalyst waste liquid containing rhodium 3.1 mg / ml, wherein containing 0.62 grams of rhodium, add 0.7833 grams of elemental zinc, heat and stir at 80 ° C for 2 hours, then add 2.2 grams of 10% hydrochloric acid to dissolve residual zinc, After 2 hours, the upper liquid was decanted, and the remaining solid was dried at 100°C to obtain 0.6095 g, with a rhodium recovery rate of 98.31%.

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 recovering a rhodium catalyst, which belongs to the field of catalysts. Active metals are used as displacing agents to separate rhodium in a solution from waste rhodium catalyst liquid in the form of precipitation. The invention is a simple and efficient rhodium recovery method, which overcomes the defects of complex process and / or low recovery rate of rhodium in the original recovery method.

Description

technical field [0001] The invention belongs to the field of catalysts, in particular to a method for recovering spent rhodium catalysts for oxo synthesis. Background technique [0002] Rhodium catalysts are widely used in oxo synthesis of aldehydes, acetic anhydride and other chemicals. They are important organic chemical raw materials and are widely used in many fields of the national economy such as medicine, food, spices and plastics. In the production process, in addition to the products, by-products such as tar are often generated. The tar is very destructive to the catalyst and will wrap the rhodium to deactivate the catalyst and stop the reaction. Therefore, the tar generated during the reaction must be removed from the reaction system. Since the tar discharged from the reaction system is wrapped with expensive rhodium, it is necessary to recover rhodium. There are many recovery methods, and there are three typical ones: the first one is the temperature-programmed...

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): C22B11/00
CPCY02P10/20
Inventor 张华西李荣雍永怙蒋贵仲
Owner HAO HUA CHENGDU 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