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

A kind of bisphosphoric acid extractant for extracting and separating zirconium and hafnium and preparation method thereof

An extraction agent and bisphosphoric acid technology, applied in the field of new bisphosphoric acid extraction agent and its preparation, can solve the problem of low extraction rate of zirconium and hafnium, and achieve the effects of enhanced identification ability, good selectivity and extraction ability, and good oil solubility

Active Publication Date: 2021-07-13
UNIV OF JINAN
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under this acidity, the common acidic organophosphorus extractant has a low extraction rate for zirconium and hafnium, so it is necessary to develop a new type of extractant to improve the extraction capacity for zirconium and hafnium

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 kind of bisphosphoric acid extractant for extracting and separating zirconium and hafnium and preparation method thereof
  • A kind of bisphosphoric acid extractant for extracting and separating zirconium and hafnium and preparation method thereof
  • A kind of bisphosphoric acid extractant for extracting and separating zirconium and hafnium and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In a 100ml three-necked round-bottom flask equipped with a spherical condenser and a mechanical stirring device, add 0.02 mol n-octylamine, 0.02 mol phenyl hypophosphorous acid, 35 ml water and 5 ml concentrated hydrochloric acid, stir the mixture and heat it to 60°C, gradually changing to It is a colorless transparent solution. Add 6 ml of 37% formaldehyde solution dropwise at reflux temperature, keep the temperature constant, and react for one hour. After cooling, the organic phase was washed several times with dilute hydrochloric acid, and then further purified by column chromatography to finally obtain N,N-n-octylamine di(methylene phenylphosphinic acid). The extractant yield and purity are shown in Table 1.

Embodiment 2

[0022] In a 100ml three-necked round-bottom flask equipped with a spherical condenser and a mechanical stirring device, add 0.02 mol n-octylamine, 0.04 mol phenyl hypophosphorous acid, 25 ml water and 15 ml concentrated hydrochloric acid, stir the mixture and heat it to 60°C, gradually changing to It is a colorless transparent solution. Add 6 ml of 37% formaldehyde solution dropwise at reflux temperature, keep the temperature constant, and react for two hours. After cooling, the organic phase was washed several times with dilute hydrochloric acid, and then further purified by column chromatography to finally obtain N,N-n-octylamine di(methylene phenylphosphinic acid). The extractant yield and purity are shown in Table 1.

Embodiment 3

[0024] In a 100ml three-necked round-bottomed flask equipped with a spherical condenser and a mechanical stirring device, add 0.02 mol of n-octylamine, 0.06 mol of phenyl hypophosphorous acid, 10 ml of water and 30 ml of concentrated hydrochloric acid, stir and heat the mixture to 60°C, gradually becoming It is a colorless transparent solution. Add 6 ml of 37% formaldehyde solution dropwise at reflux temperature, keep the temperature constant, and react for four hours. After cooling, the organic phase was washed several times with dilute hydrochloric acid, and then further purified by column chromatography to finally obtain N,N-n-octylamine di(methylene phenylphosphinic acid). The extractant yield and purity are shown in Table 1.

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 novel bisphosphoric acid extractant N,N-n-octylamine di(methylene phenylphosphinic acid) for extraction and separation of zirconium and hafnium and a preparation method thereof. The extractant is easy to synthesize, has good oil solubility and good stability. N, N-n-octylamine di(methylene phenylphosphinic acid) has a strong extraction ability for zirconium and hafnium, and the extraction rate is far higher than that of common acidic organic phosphorus extractants under the same conditions. While ensuring the extraction rate, this bisphosphoric acid extraction agent preferentially extracts zirconium, which solves the problems of low extraction rate of zirconium and hafnium and poor separation effect.

Description

technical field [0001] The invention belongs to the technical field of extraction and separation of zirconium and hafnium, and in particular relates to a novel bisphosphoric acid extractant for extraction and separation of zirconium and hafnium and a preparation method thereof. Background technique [0002] With the excessive consumption of traditional fossil energy such as coal, oil, and natural gas, and the negative impact of burning fossil fuels on the human living environment, nuclear energy has become an indispensable new energy due to its advantages in environmental protection, economy, and safety. Alternative energy has developed rapidly and matured in recent decades. Zirconium and hafnium are two extremely important metallic materials in the nuclear industry. Zirconium has a small thermal neutron absorption cross section (0.18b) and good corrosion resistance. It is used as cladding and structural materials of reactors, and is the first safety barrier to prevent the ...

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): C07F9/30C22B34/14C22B3/38
CPCC07F9/301C07F9/304C22B34/14C22B3/386Y02P10/20
Inventor 崔玉赵嘉琳赵奕铭
Owner UNIV OF JINAN
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