Synthetic method of solid phase catalyst with organic microballoons load gold nano grain

A gold nanoparticle, solid-phase catalyst technology, applied in the direction of organic compound/hydride/coordination complex catalyst, chemical instrument and method, metal/metal oxide/metal hydroxide catalyst, etc., can solve the polyelectrolyte price Expensive, chemical modification synthesis steps are increased, etc., to achieve the effect of simple post-processing and good dispersibility

Inactive Publication Date: 2010-06-02
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since silicon dioxide (SiO 2 ) and polystyrene (PS) microspheres themselves cannot support gold nanoparticles, which makes these methods have some disadvantages, such as: polyelectrolyte is expensive, and chemical modification increases the number of synthesis steps

Method used

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  • Synthetic method of solid phase catalyst with organic microballoons load gold nano grain
  • Synthetic method of solid phase catalyst with organic microballoons load gold nano grain
  • Synthetic method of solid phase catalyst with organic microballoons load gold nano grain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) In a 25ml round bottom flask, add 9mg of sodium metal into 5ml of absolute ethanol and react for 15min.

[0024] (2) Add 30 mg of (2,5-dimercapto-1,3,4-thiadiazole) into the round bottom flask in step (1), and stir magnetically at room temperature for 2.5 hours.

[0025] (3) 21 mg of perchlorinated acenaphthylene was dissolved in 10 ml of toluene.

[0026] (4) Mix the solutions obtained in steps (2) and (3) in a 50ml round-bottomed flask with a stopper, and keep the temperature at 20°C for 48h.

[0027] (5) Pour out the solution after cooling to room temperature, and centrifuge with a 5ml centrifuge tube. The resulting solid precipitate is washed with toluene, ethanol, and water five times in sequence, and the precipitate is finally dispersed in ethanol.

[0028] (6) Mix 1 mg of microspheres washed in step 5 and 0.1 ml (aqueous solution with a concentration of 25.4 mmol / L) of chloroauric acid (HAuCl 4 ) mixed in 10ml of ethanol and water mixed reagent (wherein ethan...

Embodiment 2

[0032] (1) In a 25ml round bottom flask, add 9mg of sodium metal into 5ml of absolute ethanol and react for 30min.

[0033] (2) Add 30 mg of (2,5-dimercapto-1,3,4-thiadiazole) into the round bottom flask in step (1), and stir magnetically at room temperature for 2.5 hours.

[0034] (3) Dissolve 21 mg of perchloronaphthalene in 10 ml of toluene.

[0035] (4) Mix the solutions obtained in steps (2) and (3) into a 50ml round-bottomed flask with a stopper, and keep the temperature at 30°C for 24h.

[0036] (5) After cooling to room temperature, the solution was poured out, centrifuged with a 5ml centrifuge tube, and the obtained solid precipitate was washed with toluene, ethanol, and water 5 times respectively, and the precipitate was finally dispersed in ethanol.

[0037] (6) Mix 1 mg of the microspheres washed in Step 5 and 0.2 ml (aqueous solution with a concentration of 25.4 mmol / L) of chloroauric acid (HAuCl 4 ) mixed in 10ml of ethanol and water mixed reagent (wherein etha...

Embodiment 3

[0040] (1) In a 25ml round bottom flask, add 9mg of sodium metal into 5ml of absolute ethanol and react for 30min.

[0041] (2) Add 30 mg of (2,5-dimercapto-1,3,4-thiadiazole) into the round bottom flask in step (1), and stir magnetically at room temperature for 2.5 hours.

[0042] (3) 21 mg of perchlorinated acenaphthylene was dissolved in 10 ml of toluene.

[0043] (4) Mix the solutions obtained in steps (2) and (3) in a 50ml round-bottomed flask with a stopper, and keep the temperature at 40°C for 12h.

[0044] (5) After cooling to room temperature, the solution was poured out, centrifuged with a 5ml centrifuge tube, and the obtained solid precipitate was washed with toluene, ethanol, and water 5 times respectively, and the precipitate was finally dispersed in ethanol.

[0045] (6) Mix 1 mg of the microspheres washed in Step 5 and 0.2 ml (aqueous solution with a concentration of 25.4 mmol / L) of chloroauric acid (HAuCl 4 ) mixed in 10ml of ethanol and water mixed reagent (...

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Abstract

The invention discloses a method for synthesizing a solid catalyst with organic microsphere-loaded gold nanoparticles, which relates to a supported solid catalyst. The method provides an easy synthesis of a solid catalyst with gold nanoparticles loaded on organic microspheres as the carrier. The method includes the following steps: 1) reacting sodium with anhydrous alcohol and then a dithiol compound to obtain an ethanol solution of a dithiol sodium salt; 2) mixing methylbenzene solution of a perchloro-carbon cluster compound and the ethanol solution of the dithiol sodium salt, maintaining a constant temperature, cooling, centrifugating, and washing to obtain organic microspheres; 3) mixing the organic microspheres, chloroauric acid and a mixed reagent composed of ethanol and water, dispersing under ultrasonic conditions, adding sodium borohydride under ultrasonic conditions, stopping the ultrasonic radiation, standing, centrifugating and washing; and 4) subjecting the product of the step 3) to the treatment in the same way as the step 3) for 1-2 times, to obtain the solid catalyst with organic microsphere-loaded gold nanoparticles.

Description

technical field [0001] The invention relates to a supported solid-phase catalyst, in particular to a synthesis method of a solid-phase catalyst supported by organic microspheres with gold nanoparticles. Background technique [0002] In the field of heterogeneous catalysis, noble metal solid catalysts occupy an important position, and they are widely used in petrochemical, fine chemical, environmental protection catalysis, life and biochemistry and other fields. For example, Pt / Al for oil reforming 2 o 3 (platinum / alumina) catalyst; Pd / Al for selective hydrogenation 2 o 3 (palladium / alumina) catalysts; Pt / molecular sieve and Pt / solid acid catalysts for isomerization reactions; Ag (silver) and Au (gold) catalysts for oxidation reactions. [0003] Gold has been considered as a low-activity catalytic material, but when gold is dispersed to the nanoscale, it can exhibit high catalytic activity. Therefore, nano-scale gold catalysts have attracted widespread attention, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/50B01J31/06
Inventor 郑兰荪王静方晓亮谢素原黄荣彬
Owner XIAMEN UNIV
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