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

Preparation method and application of novel caesium-removing silver-tin selenide microporous material

A technology of microporous materials, selenides, used in chemical instruments and methods, cation exchange materials, chemical/physical processes, etc.

Inactive Publication Date: 2013-11-13
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, metal chalcogenides with specific selectivity for cesium ions have not been reported yet.

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
  • Preparation method and application of novel caesium-removing silver-tin selenide microporous material
  • Preparation method and application of novel caesium-removing silver-tin selenide microporous material
  • Preparation method and application of novel caesium-removing silver-tin selenide microporous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1: Silver-tin selenide [(Me) 2 NH 2 ] 0.75 Ag 1.25 SnSe 3 Preparation

[0013] Add AgCl (1.0mmol, 0.145g), Sn (1.0mmol, 0.114g), Se (3mmol, 0.237g) into 5mL of N,N'-dimethylformamide solvent, fully stir at room temperature and then seal it in the lining In a 28mL stainless steel reactor made of polytetrafluoroethylene, react at a constant temperature of 160°C for 7 days, then naturally cool to room temperature, filter and wash thoroughly with ethanol to obtain dark red block crystals (target product) and a small amount of black powder, crystal product The yield can reach 62%. The same result can be obtained by magnifying the starting reactant by 5 times, indicating that the compound can be prepared in a large amount, which is very important for practical applications.

Embodiment 2

[0014] Example 2: Silver-tin selenide [(Me) 2 NH 2 ] 0.75 A g1.25 SnSe 3 Ion exchange experiment on alkali metals

[0015] A typical ion exchange experiment: the alkali metal chloride ACl (A=Rb, Cs) (2mmol) was dissolved in 20mL of distilled water, and then 100mg[(Me) 2 NH 2 ] 0.75 A g1.25 SnSe 3 For the crystal sample, the mixture is stirred at room temperature for 12 hours, after which the ion exchange product is filtered and thoroughly washed with distilled water, ethanol and ether in sequence to obtain the alkali metal ion exchange product.

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 relates to a preparation method for a silver-tin selenide microporous material, and ion exchange performance application thereof. The compound is synthesized by a simple solvothermal method, has the chemical formula of [(Me)2NH2]0.75Ag1.25SnSe3, has the molecular weight of 524.75, and belongs to a tetragonal system; a space group is P-421m; and the unit cell parameters are that: a=b=13.7787(4), c=9.6524(5), alpha=beta=gamma=90 degrees, V=1832.52(12), and Z=2. The silver-tin selenide microporous material has an open skeleton with three-dimensional pores; and the compound has good ion exchange performance for alkali metal Cs+ and Rb+ ions in aqueous solution, and particularly has high ion exchange capacity and unique selectivity for the Cs+ ions under strong acid and alkali environments at different pH values, so the silver-tin selenide microporous material prepared by the method can be used for removing a radioactive element caesium from high-level radioactive wastewater.

Description

Technical field [0001] The invention relates to a preparation method of a type of silver-tin selenide microporous material and its ion exchange performance application. The compound has an alkali metal Cs + , Rb + Ions have excellent ion exchange performance, especially for Cs + Ions have strong ion exchange capacity and extremely high selectivity under different pH conditions, including strong acid and alkali environments, and are therefore of great significance for eliminating the radioactive element cesium from high-level radioactive waste. Background technique [0002] Metal chalcogenides with an open framework structure have aroused widespread interest because of their ability to perfectly combine semiconductor photoelectric properties with porosity. Such compounds have broad application prospects in catalysis, adsorption, separation, fast ion conductors, ion exchange and so on. Compared with the traditional oxygen-containing zeolite-like materials, the chalcogen element in...

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): B01J39/08B01J39/02C02F1/42B01J39/16
Inventor 李建荣黄小荥
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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