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

Adsorbent for separating palladium from alkali metals and alkaline-earth metals and its preparation method and use

A technology of alkaline earth metal and adsorbent, applied in the field of adsorbent for separating element palladium and its preparation, can solve the problems of high acidity, high radioactivity, high toxicity, etc., achieve fast separation speed, good selectivity, and reduce complexity Effect

Inactive Publication Date: 2014-12-03
ZHEJIANG UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The high-level waste liquid (HLLW) produced by the reprocessing of spent fuel is a highly acidic, highly radioactive and highly toxic mixed solution. During the separation process of the exothermic element Cs and the exothermic element Sr, the alkali metal and alkaline earth metal solution Generally may contain NaNO 3 、KNO 3 , RbNO 3 , CsNO 3 , Sr(NO 3 ) 2 , Ba(NO 3 ) 2 And a certain amount of palladium, there is no effective method in the prior art to effectively separate the palladium in the solution

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
  • Adsorbent for separating palladium from alkali metals and alkaline-earth metals and its preparation method and use
  • Adsorbent for separating palladium from alkali metals and alkaline-earth metals and its preparation method and use
  • Adsorbent for separating palladium from alkali metals and alkaline-earth metals and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of 4-[3-(3-benzo-15-crown-5)methyl-4-hydroxy-phenyl]methylethyl-phenol resin

[0037] Add 3.42g (15mmol) 2,2-bis(4-hydroxyphenyl) propane and 3.49g (13mmol) benzo-15-crown 5 to 30g trichloroacetic acid, stir and dissolve at 90°C to form a solution, then Add 1.79g of paraformaldehyde (containing 60mmol formaldehyde) into the solution within 4.5 hours. After the addition is completed, the reaction temperature is raised to 140°C. After 4 hours of reaction, precipitation begins to appear in the reaction system, and the mass to be precipitated no longer increases. Cool the reaction system to room temperature, add 150mL of methanol to the resulting reaction solution to atomize the precipitate, crush and filter to obtain a solid powder, continue to wash the solid powder with 50mL of methanol, and repeat the washing several times until the cleaning solution (i.e. methanol ) without color change, finally obtained brown powder, which is 4-[3-(3-benzo-15-crown-5)methyl-4...

Embodiment 2

[0040] The preparation of embodiment 2 adsorbents

[0041] 100 grams of 4-[3-(3-benzo-15-crown-5)methyl-4-hydroxyl-phenyl]methylethyl-phenol resin (n is 7) with structural formula (I) was dissolved in In 1000mL of dichloromethane, mix evenly; add 150g of porous silica gel, stir evenly to volatilize most of the dichloromethane until the material is in a nearly dry state, and then dry the nearly dry material in vacuum at 45°C for 24h.

Embodiment 3

[0042] The preparation of embodiment 3 adsorbents

[0043] 100 grams of 4-[3-(3-benzo-15-crown-5)methyl-4-hydroxyl-phenyl]methylethyl-phenol resin (n is 9) with structural formula (I) was dissolved in In 1000mL of dichloromethane, mix well; add 200g of porous silica gel, stir evenly to volatilize most of the dichloromethane until the material is in a nearly dry state, and then dry the nearly dry material in vacuum at 45°C for 24h.

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 an adsorbent for separating palladium from alkali metals and alkaline-earth metals. 4-[3-(3-benzo-15-crown-5)methyl-4-hydroxy-phenyl]methylethyl-phenolic resin is supported by carriers to form the adsorbent. The 4-[3-(3-benzo-15-crown-5)methyl-4-hydroxy-phenyl]methylethyl-phenolic resin has a structural general formula (I), wherein in the structural general formula (I), n is an integer of 7-15. The carriers are porous silica gel or large-hole SiO2 coated by a polymer. The invention also discloses a preparation method and a use of the adsorbent for separating palladium from alkali metals and alkaline-earth metals. The preparation method has simple processes. The adsorbent obtained by the preparation method has good selectivity in palladium separation. The palladium separation process adopting the adsorbent is simple. The adsorbent has high separation efficiency and can be industrially produced easily.

Description

technical field [0001] The invention relates to the technical field of separation of elemental palladium, in particular to an adsorbent for separating elemental palladium from alkali metals and alkaline earth metals, a preparation method and application thereof. Background technique [0002] Elemental palladium is a silver-white transition metal with soft texture, good ductility and plasticity, and can be forged, rolled and drawn. [0003] The chemical properties of elemental palladium are inactive, and it is stable in air and humid environment at room temperature. When heated to 800°C, a palladium oxide film forms on the surface of palladium. Elemental palladium can resist the erosion of hydrofluoric acid, phosphoric acid, perchloric acid, hydrochloric acid and sulfuric acid vapor, but it is easily soluble in aqua regia and hot concentrated sulfuric acid and concentrated nitric acid. Both are corrosive. [0004] Block metal palladium can absorb a large amount of hydrogen....

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): B01J20/26B01J20/30C22B7/00C22B11/00
CPCY02P10/20
Inventor 张安运戴荧
Owner ZHEJIANG UNIV
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