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Platinum-containing hydrosilylation catalyst with metal ion interference resistant function as well as preparation and application

An ion interference and anti-metal technology, applied in organic compound/hydride/coordination complex catalysts, catalytic reactions, physical/chemical process catalysts, etc., can solve problems such as poor stability, precipitation of platinum black, poisoning and loss of activity, etc. Achieve long-term, good stability, and cost-saving effects

Active Publication Date: 2016-07-27
国科广化(南雄)新材料研究院有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional platinum-containing hydrosilylation catalysts often face problems such as poor stability, easy poisoning and deactivation, and precipitation of platinum black. Organic compounds containing S, P, and N elements, and ionic compounds containing heavy metals such as Sn, Pb, and Hg And some unsaturated compounds can significantly reduce the activity of platinum catalysts, even poisoning and deactivation, so it is of great practical significance to develop platinum-containing hydrosilylation catalysts that are suitable for hydrosilylation systems and have certain anti-poisoning effects And huge economic value, it is expected to be applied to the hydrosilylation reaction on a large scale in the future

Method used

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  • Platinum-containing hydrosilylation catalyst with metal ion interference resistant function as well as preparation and application
  • Platinum-containing hydrosilylation catalyst with metal ion interference resistant function as well as preparation and application
  • Platinum-containing hydrosilylation catalyst with metal ion interference resistant function as well as preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) In a dry 100mL two-necked flask, dissolve 1g of chloroplatinic acid in 15mL of isopropanol, then add 5g of tetramethyldivinyldisiloxane and 3g of sodium bicarbonate and stir to make it evenly mixed. Stirring and reflux reaction for 6h;

[0040] (2) After the reaction in step (1) is completed, stop heating and stirring, and after the temperature drops to 30° C., add 15 g of a functional organic compound with a crown-like structure shown in formula I to the system obtained in step (1), Stir the reaction at 30°C for 30 minutes, stop heating and stirring after the reaction is completed, and then let it stand for 2 hours;

[0041] (3) Then filter the precipitate in the reaction solution with filter paper, and repeatedly wash the precipitate 3 times with isopropanol, combine the filtrate and the lotion, and distill under reduced pressure to remove the solvent isopropanol in the combined solution to obtain a compound with anti-metal ion interference effect Platinum-contai...

Embodiment 2

[0044] (1) In a dry 100mL two-neck flask, dissolve 1g of chloroplatinic acid in 15mL of ethanol, then add 5g of tetramethyltetravinylcyclotetrasiloxane and 5g of sodium bicarbonate and stir to make it evenly mixed, and stir at 70°C Reflux reaction for 5h;

[0045] (2) After the reaction in step (1) is completed, stop heating and stirring, and after the temperature drops to 30° C., add 20 g of a functional organic compound with a crown-like structure shown in formula I to the system obtained in step (1), Stir the reaction at 30°C for 50 minutes, stop heating and stirring after the reaction is completed, and then let stand for 3 hours;

[0046] (3) Then use filter paper to filter out the precipitate in the reaction solution, and repeatedly wash the precipitate with ethanol for 3 times, combine the filtrate and washing solution, and distill under reduced pressure to remove the solvent ethanol in the combined solution, and the platinum-containing silicon hydrogen with anti-metal i...

Embodiment 3

[0049] (1) In a dry 100mL two-necked flask, dissolve 1g of sodium chloroplatinate in 20mL of isopropanol, then add 10g of tetramethyldivinyldisiloxane and 5g of sodium bicarbonate and stir to mix evenly, 80 ℃ stirring and reflux reaction for 5h;

[0050] (2) After the reaction in step (1) is completed, stop heating and stirring, and after the temperature drops to 35° C., add 20 g of a functional organic compound with a crown-like structure shown in formula I to the system obtained in step (1), Stir the reaction at 35°C for 50 minutes, stop heating and stirring after the reaction is completed, and then let stand for 3 hours;

[0051] (3) Then the reaction solution is centrifuged to remove the precipitate in the reaction solution, and the precipitate is repeatedly washed with isopropanol for 3 times, the supernatant after the centrifugation is combined, and the solvent isopropanol in the combined solution is removed by distillation under reduced pressure, A platinum-containing ...

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Abstract

The invention belongs to the technical field of synthesis of a platinum catalyst, and particularly relates to a platinum-containing hydrosilylation catalyst with a metal ion interference resistant function as well as preparation and an application. A platinum-containing compound and an organo-siloxane ligand containing double bonds are subjected to a reaction to synthesize an organo-siloxane complex of platinum, a functional organic compound with a crown-ether-like structure is added, and the platinum-containing hydrosilylation catalyst with the metal ion interference resistant function is obtained, wherein the functional organic compound with the crown-ether-like structure has a structure represented as a formula I. With the adoption of the platinum-containing hydrosilylation catalyst with the metal ion interference resistant function, the problems that the stability becomes poorer, the catalyst is prone to poisoning, inactivation and precipitation of platinum black and the like when a traditional platinum-containing hydrosilylation catalyst is contacted with a few heavy metal ions are solved effectively; the catalyst is good in stability, can be stored for a longer time and saves use cost.

Description

technical field [0001] The invention belongs to the technical field of platinum catalyst synthesis, and in particular relates to a platinum-containing hydrosilylation catalyst with an anti-interference effect of metal ions, as well as its preparation and application. Background technique [0002] The hydrosilylation reaction refers to the addition reaction of organosilicon compounds containing silicon-hydrogen bonds and unsaturated compounds under certain conditions. It occupies an important position in the field of organosilicon chemistry and is widely used in polymer modification, catalytic addition Hydrogen, asymmetric synthesis and other fields. For the hydrosilylation reaction, the selection and preparation of the catalyst is a crucial link, which directly affects the reaction efficiency. [0003] The catalysts currently used to catalyze the hydrosilylation reaction are mainly complexes of noble metals, such as platinum, rhodium, ruthenium, palladium, osmium and iridiu...

Claims

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Application Information

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IPC IPC(8): B01J31/22
CPCB01J31/1608B01J2231/323B01J2531/828
Inventor 胡继文魏彦龙涂园园张培杨公华陈又军姚文英马红强胡美龙林树东
Owner 国科广化(南雄)新材料研究院有限公司
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