Preparation method of anion-exchange membrane with univalence and multivalence selective separation function
An anion-exchange membrane and functional technology, applied in the field of separation membranes, can solve the problems of easy detachment of the modified layer, inability to overcome stability, unfavorable long-term use, etc., to achieve improved membrane stability, good unit price selective separation function, and increased The effect of negative charge
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0046] 1.0g PSS and 29.22g NaCl were dissolved in 1000mL pure water to obtain PSS solution, 1.0g HACC and 29.22gNaCl were dissolved in 1000mL pure water to obtain HACC solution, commercial homogeneous anion exchange membrane (AEM-Type Ⅰ, Fujifilm Corp .Japan) cut to a suitable size, soaked in pure water to remove the hydrophilic substances on the surface, and stored in pure water for later use.
[0047] The electrodeposition experimental device consists of four compartments, the feed liquid compartment is 100mL PSS solution, the other compartment is 0.5M NaCl solution, and both electrode compartments are 0.2M NaSO 4 solution. Connect the cathode and anode of the electrodeposition device to the negative and positive electrodes of the DC power supply respectively, and conduct electrodeposition with a current density of 5.0mA / cm 2 , the effective membrane area is 19.625cm 2 , the electrodeposition time is 30min, and the electrodeposition process must be continuously stirred to ...
Embodiment 2
[0050] The number of electrodeposited layers in the above-mentioned Example 1 is increased to 5.5 double layers, and other steps and conditions remain unchanged, and the obtained films are respectively marked as (PSS / HACC) 5 PSS, CL-(PSS / HACC) 5 PSS.
Embodiment 3
[0052] The number of electrodeposited layers in the above-mentioned embodiment 1 is increased to 8.5 double layers, and other steps and conditions are unchanged, and the obtained films are respectively marked as (PSS / HACC) 8 PSS, CL-(PSS / HACC) 8 PSS.
[0053] The infrared characterization and surface morphology of the film are shown in Figure 4 and Figure 5 shown.
[0054] Depend on Figure 4 is the infrared spectrum of the original membrane and each modified membrane. It can be seen that with the increase of the number of modified layers, the sulfonic acid groups on the surface of the membrane continue to increase; and the cross-linked sulfonic acid groups of the same modified layer membrane The characteristic absorption peak of the film is also enhanced, because the small molecule cross-linking agent DAS has two sulfonic acid groups, and the cross-linking also increases the amount of sulfonic acid groups on the membrane surface. 2120cm -1 is the characteristic absorp...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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