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Chinese scholars have made a series of progress in the research of anionic binding catalytic polymerization methods
Time of Update: 2023-02-01
Figure (A) Active cationic polymerization catalyzed by anion binding; (B) Active anionic polymerization of amino acid NCA monomers catalyzed by anion binding With the support of the National Natural
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Professor Gao Renjun's team has made important progress in the design and synthesis of anionic liquid enzymes
Time of Update: 2022-11-15
202202359The team of Professor Gao Renjun from the Key Laboratory of Molecular Enzymatic Engineering of the Ministry of Education, College of Life Sciences, Jilin University, together with the team of Professor Guo Yin of Aarhus University in Denmark, proposed a design strategy for a new solvent-free liquid protein (enzyme).
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Issue 5, 2022 - New anion exchange membrane developed
Time of Update: 2022-11-14
The results show that the structure of the permeable plane orientation and the mixed valence metallocene chemical structure are an effective method to optimize the performance of anion exchange membranes, and are expected to surpass the traditional phase separation strategy.
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Tianjin University develops a new type of anion exchange membrane
Time of Update: 2022-03-05
In response to this problem, the research group used a magnetic field to construct a transmission channel through plane orientation in a paramagnetic ferrocene salt anion exchange membrane .
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Qingdao Energy Institute designs anion-selective permeable polymer electrolyte to solve the bottleneck problem of dual-carbon batteries
Time of Update: 2022-01-25
At present, the reports on improving the cycling performance of dual-ion batteries are mainly to suppress the oxidative decomposition of the electrolyte by constructing a physical barrier layer, but there are few reports on the anion-solvent co-intercalation behavior and solutions .
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Anion exchange resin
Time of Update: 2022-01-02
Anion exchange resinIn 1935, the British chemists Adams and Holmes prepared the polyaniline-aldehyde weakly basic anion exchange resin through the polycondensation reaction of m-phenylenediamine and formaldehyde , that is, amine solution and twice the amount of hydrochloric acid Mix, then mix with excess formaldehyde solution, heat at 90～95℃ for 1.
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201×4 strong basic styrene anion exchange resin
Time of Update: 2022-01-01
[Preparation method] It is basically the same as 201×7 strong basic styrene anion exchange resin, the only difference is that the product has a lower degree of cross-linking (that is, the degree of cross-linking is 4) .
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Anion exchange resin preparation method (2)
Time of Update: 2022-01-01
(3) Chloromethylstyrene polymerization methodThe method uses chloromethyl-containing styrene as a monomer, and a crosslinking agent such as divinylbenzene copolymer to obtain a chloromethyl copolymer, and then amination to obtain an anion exchange resin .
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Macroporous strong basic acrylic anion exchange resin
Time of Update: 2022-01-01
[Preparation method] The copolymer of methyl acrylate and divinylbenzene is aminated and alkylated to obtain acrylic acid-based strong basic anion exchange resin .
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Macroporous weakly basic acrylic anion exchange resin
Time of Update: 2022-01-01
Chinese patent CN85104153 In a 2000mL reaction flask equipped with a stirrer, a thermometer and a reflux condenser, add 1000mL water, 3g gelatin, 100g sodium chloride, stir to dissolve, weigh 75g divinylbenzene, 3g benzene peroxide in a beaker Formyl , 225g methyl acrylate, 120g gasoline, 10g dimethyl phthalate, mix well and add to the reaction flask, stir into beads, react at 80°C for 14h, then cool, filter, wash and dry .
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Anion exchange resin preparation method (3)
Time of Update: 2022-01-01
(5) Mannich amination reaction (I)This method requires the introduction of active groups on the benzene ring before the Mannich reaction, otherwise the Mannich reaction is difficult to proceed. The s
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D202 Macroporous Strong Basic Quaternary Ammonium Type Ⅱ Styrene Anion Exchange Resin
Time of Update: 2022-01-01
The specific preparation process is basically the same as D001 macroporous styrene and divinylbenzene copolymer beads .
Figure 9-7 Preparation process of D202 macroporous strongly basic quaternary ammonium type II styrene-based anion exchange resin[Technical index] SH2605.
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Condensation type anion exchange resin
Time of Update: 2022-01-01
For example, polycondensation of phenol and tetraethylenepentamine with formaldehyde to a slurry, and then suspension polymerization in o-dichlorobenzene, can obtain spherical weakly basic resin, the exchange capacity can reach 9.
Weakly basic resin made by polycondensation of melamine , guanidine and formaldehyde, the exchange capacity is 5.
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Technical index and application of 201×7 strong basic styrene anion exchange resin
Time of Update: 2022-01-01
②201×7MB anion resin is dedicated for mixed bed ion exchange treatment, and can be used in conjunction with 001×7 strong acid cation resin to form a mixed ion exchange bed for deep chemical desalination treatment of water .
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D201 Macroporous Strong Basic Quaternary Ammonium Type I Styrene Anion Exchange Resin
Time of Update: 2022-01-01
The specific preparation process is basically the same as D001 macroporous styrene and divinylbenzene copolymer beads .
Figure 9-6 Preparation process of D201 macroporous strongly basic quaternary ammonium type I styrene-based anion exchange resin[Technical Index]SH2605.
