Unlock instant, AI-driven research and patent intelligence for your innovation.

Use of neutral phosphoramide extractant for extraction and separation of ce4+

An extractant and phosphoramide technology, which is applied in the field of Ce4+ extraction and separation, can solve the problems of high price, difficulty in synthesizing Cyanex923 extractant, low cerium loading, etc., and achieves reduction of acid-base consumption, high industrial application value and synthetic raw material cost. low effect

Active Publication Date: 2015-10-14
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Cyanex923 extractant is difficult to synthesize, expensive and has low cerium loading

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
  • Use of neutral phosphoramide extractant for extraction and separation of ce4+
  • Use of neutral phosphoramide extractant for extraction and separation of ce4+
  • Use of neutral phosphoramide extractant for extraction and separation of ce4+

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0079] In order to further illustrate the solution of the present invention, specific examples of the present invention are provided to help those skilled in the art understand and implement the present invention, but the present invention is not limited to these examples.

[0080] Preparation Example

[0081] The chemical reagents used are commercially available analytical reagents. The nuclear magnetic resonance instrument is Varian Mercury300. The gas chromatography-mass spectrometer is: Agilent5975-6890N.

preparation Embodiment 1 3

[0082] Synthesis of Preparation Example 1 Triisooctyl Phosphoramide

[0083]

[0084] Using pyridine as a solvent, react phosphorus oxychloride and isooctylamine at a molar ratio of 1:3 at 0°C for 4 hours to generate triisooctylphosphoramide. 1 H NMR spectrum (in CDCl 3 middle) such as figure 1 shown. MS(ESI):m / z:432.4(M-H) + .

preparation Embodiment 2 2

[0085] Preparation Example 2 The synthesis of diisooctyl-isooctyloxyphosphoramide

[0086]

[0087] Using chloroform as a solvent, react phosphorus oxychloride and isooctyl alcohol in a molar ratio of 1:1 at 10°C for 5 hours to obtain alkyl dichlorophosphate. After hydrogen chloride was removed under reduced pressure, triethylamine was used as an absorbent to react the reaction product with isooctylamine at a molar ratio of 1:2 at 0°C for 5 hours to obtain the product diisooctyl-isooctyloxyphosphoramide. 1 H NMR spectrum (in CDCl 3 in) such as figure 2 shown. MS(ESI):m / z:433.5(M-H) + .

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 an application of a neutral phosphamide extracting agent shown in a general formula I to Ce<4+> extraction and separation, and a method for extracting and separating Ce<4+> by using the neutral phosphamide extracting agent shown in the general formula I. According to the method, a neutral phosphamide extracting system containing the neutral phosphamide extracting agent shown in the general formula I and Ce<4+>-containing material liquid are mixed and extracted so as to obtain cerium-containing extract liquid and cerium-free raffinate. The method has the advantages that the separation cost of cerium can be reduced, the yield of cerium reaches 99%, and the purity of the cerium reaches 99.99%.

Description

technical field [0001] The present invention relates to Ce 4+ The extraction and separation method, specifically, involves a neutral phosphoramide extractant for the extraction and separation of Ce 4+ The purposes of, especially a kind of use neutral phosphoramide extraction agent to extract and separate Ce 4+ Methods. Background technique [0002] Currently, Ce 4+ The separation mainly uses Cyanex923 extractant, its main components are 42wt% hexyldioctylphosphine oxide, 31wt% dihexyloctylphosphine oxide, 14wt% trioctylphosphine oxide and 8wt% trihexylphosphine oxide. For example, Chinese patent application CN200610017116.1 discloses a simultaneous extraction of Ce by using a neutral phosphorus (phosphine) extraction system 4+ With F-ion, the method for preparing cerium trifluoride micropowder in stripping process, wherein said neutral phosphorus (phosphine) extraction system is Cyanex923 and is selected from tributyl phosphate (TBP), P350 (methyl phosphate dimethyl Hep...

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): C22B3/38C22B59/00
CPCY02P10/20
Inventor 廖伍平卢有彩张志峰
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI