Bis phosphonic acid functional organosilicon high temperature proton conductor and preparation method thereof
A proton conductor and functionalization technology, applied in the field of diphosphonic acid functionalized organosilicon high-temperature proton conductor and its preparation, can solve the problem of low proton conductance, achieve high conductivity, good reproducibility, and improve hydrolysis stability Effect
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Embodiment 1
[0019] A preparation method of a hydrolytically stable diphosphoric acid functionalized organosilicon high-temperature proton conductor. The specific steps are as follows:
[0020] 1) Before the reaction, the molar ratio of tetrasodium hydroxyethylene diphosphonate: tetrahydrofuran: propyltrimethoxysilane isocyanate is 0.4:10:1.0, and the raw materials are weighed for later use;
[0021] 2) Add tetrasodium hydroxyethylidene diphosphonate and solvent tetrahydrofuran into a four-neck flask equipped with a stirrer, thermometer, reflux condenser, and dropping funnel, stir to dissolve completely, heat to 45°C, and slowly drop Add isocyanate propyltrimethoxysilane, react at this temperature for 24h and keep stirring, and distill and remove solvent tetrahydrofuran after the reaction to obtain diphosphotrimethoxysilane;
[0022] 3) Diphosphotrimethoxysilane obtained in step 2) is used as the main hydrolysis precursor, aminopropyltrimethoxysilane and tetraethoxysilane are used as auxil...
Embodiment 2
[0025] A preparation method of a hydrolytically stable diphosphoric acid functionalized organosilicon high-temperature proton conductor. The specific steps are as follows:
[0026] 1) Before the reaction, the molar ratio of tetrasodium hydroxyethylene diphosphonate: tetrahydrofuran: propyltrimethoxysilane isocyanate is 0.4:10:1.0, and the raw materials are weighed for later use;
[0027] 2) Add tetrasodium hydroxyethylidene diphosphonate and solvent tetrahydrofuran into a four-neck flask equipped with a stirrer, thermometer, reflux condenser, and dropping funnel, stir to dissolve completely, heat to 45°C and then slowly add dropwise Propyl isocyanate trimethoxysilane, reacted at this temperature for 24h and kept stirring, and distilled off the solvent tetrahydrofuran after the reaction to obtain diphosphotrimethoxysilane;
[0028] 3) Diphosphotrimethoxysilane obtained in step 2) is used as the main hydrolysis precursor, aminopropyltrimethoxysilane and tetraethoxysilane are use...
Embodiment 3
[0031] A preparation method of a hydrolytically stable diphosphoric acid functionalized organosilicon high-temperature proton conductor. The specific steps are as follows:
[0032]1) Before the reaction, the molar ratio of tetrasodium hydroxyethylene diphosphonate: tetrahydrofuran: propyltrimethoxysilane isocyanate is 0.4:10:1.0, and the raw materials are weighed for later use;
[0033] 2) Add tetrasodium hydroxyethylidene diphosphonate and solvent tetrahydrofuran into a four-neck flask equipped with a stirrer, thermometer, reflux condenser, and dropping funnel, stir to dissolve completely, heat to 60°C and slowly add Propyl isocyanate trimethoxysilane, reacted at this temperature for 24h and kept stirring, and distilled off the solvent tetrahydrofuran after the reaction to obtain diphosphotrimethoxysilane;
[0034] 3) Diphosphotrimethoxysilane obtained in step 2) is used as the main hydrolysis precursor, aminopropyltrimethoxysilane and tetraethoxysilane are used as auxiliary ...
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