Star carbon dioxide fixed carrier and preparation method thereof as well as preparation method of separating membrane material

A carbon dioxide and immobilized carrier technology, applied in chemical instruments and methods, gas fuel, semi-permeable membrane separation, etc., can solve single problems, achieve good storage stability, high permeability selectivity, and stable polymerization reactions

Active Publication Date: 2015-04-29
CHONGQING ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CO reported in published literature 2 The immobilized carrier membrane materials all contain secondary or tertiary amine groups, and the use of amine groups and CO 2 The weak acid-base e

Method used

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  • Star carbon dioxide fixed carrier and preparation method thereof as well as preparation method of separating membrane material
  • Star carbon dioxide fixed carrier and preparation method thereof as well as preparation method of separating membrane material
  • Star carbon dioxide fixed carrier and preparation method thereof as well as preparation method of separating membrane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Under anaerobic conditions, dissolve 0.1 part of cyclodextrin in 5 parts of DMF according to parts by weight, and add 0.2 part of BIBB (2-bromoisobutyryl bromide) under ice bath conditions, and the temperature of the reaction solution is 0 ℃, then add 0.4 parts of triethylamine, and react at 0-50℃ for 24 hours. After the reaction, the product is precipitated by adding ether until the shape becomes solid, washed with acetone, and placed in a vacuum drying oven to remove ether and acetone. The resulting product is the macroinitiator CD-Br.

[0029] 2) 0-50°C, under anaerobic conditions, first dissolve 0.2 parts of CD-Br in 5 parts of DMF, then add 3 parts of GMA (glycidyl methacrylate) as a monomer, and then add 0.082 parts of ligand N, N,N,N,N-Pentamethyldiethylenetriamine, finally add 0.033 parts of CuBr initiator, polymerize for 1 hour, expose to the air after the reaction, deactivate the initiator system and terminate the polymerization, then add Methanol was prec...

Embodiment 2

[0036] 1) Under anaerobic conditions, dissolve 0.2 parts of cyclodextrin in 10 parts of DMF according to parts by weight, and add 0.6 parts of BIBB under ice bath conditions. At this time, the temperature of the reaction solution is controlled at 0°C, and then add 0.6 parts of triethylamine Amine, react at 0-50°C for 24 hours. After the reaction, the product is precipitated by adding ether until the shape becomes solid, washed with acetone, and put in a vacuum drying oven to remove ether and acetone. The obtained product is a macromolecular initiator CD- Br.

[0037] 2) 0-50°C, under anaerobic conditions, first dissolve 0.5 parts of CD-Br in 10 parts of DMF, then add 6 parts of GMA as a monomer, and then add 0.15 parts of ligand 2,2-bipyridine (BPY), Finally add 0.1 part of CuBr initiator, polymerize for 8 hours, expose to the air after the reaction, deactivate the initiator system and terminate the polymerization, then add methanol to precipitate until the shape becomes solid...

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Abstract

The invention discloses a star carbon dioxide fixed carrier which is characterized in that the fixed carrier is a polymer taking CD as a core and PGED as an arm. The fixed carrier is established by an atom transfer radical polymerization method, the method has a smooth polymerization reaction and is easy to control, and the star CO2 fixed carrier with different arm numbers, different arm lengths, different molecular weights and narrow molecular weight distribution can be prepared according to the needs. The prepared CO2 fixed carrier has good storage stability, the amino on the arm is a CO2 promoting transfer carrier, and therefore, the fixed carrier can be used as a separating membrane material, and has CO2 selective permeability, high permeation selectivity on a CO2/CH4 system, and has the application potential in a methane purification technology.

Description

technical field [0001] The invention relates to a carbon dioxide fixed carrier for separating carbon dioxide and methane in the evolution of biogas purification and a preparation method thereof, and also relates to a preparation method of a separation membrane material made of the fixed carrier. Background technique [0002] The double crisis of energy and environment has raised the research and development of renewable energy to an unprecedented strategic height. Anaerobic fermentation technology, as an engineering technology that can not only process organic waste but also recover energy, has been paid more and more attention. In the process of producing biogas in domestic large and medium-sized biogas projects, how to make high-value use of biogas and make it exert greater economic benefits is one of the keys to the sustainable development of biogas projects. my country is short of natural gas resources, and vigorously developing biogas purification and purification indu...

Claims

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Application Information

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IPC IPC(8): B01D71/40B01D71/38B01D69/02B01D67/00C01B31/20C10L3/10C08J7/04C08L81/06C09D129/04C09D183/04C01B32/50
Inventor 高立洪朱韵李萍韦秀丽李平郑吉澍刘科徐进蔡鸣龙翰威
Owner CHONGQING ACAD OF AGRI SCI
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