Preparation method of platinum-carbon catalyst on the basis of microreactor
A platinum-carbon catalyst and microreactor technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical/physicochemical reactors, etc., can solve the problems of uneven distribution of active particles and small catalyst output, etc. Achieve the effect of good electrochemical performance, easy operation and uniform distribution
Inactive Publication Date: 2019-09-20
南京东焱氢能源科技有限公司
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Problems solved by technology
In the traditional tank reaction, there are cases where the catalyst output is small and the distribution of active particles is uneven
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[0015] Example: see figure 1 , a preparation method of a platinum-carbon catalyst based on a microreactor: step 1, weigh 0.5-2.0 g of carbon black, add 20-100 g of distilled water, 30-150 g of ethylene glycol, stir, and disperse evenly by ultrasonic to obtain a carbon black slurry material one;
[0016] Step 2, taking 50-200g of chloroplatinic acid aqueous solution with a mass fraction of 0.1%-5%, and weighing 5-20g of sodium hydroxide aqueous solution with a mass fraction of 0.5%-10%, mixing the two evenly to obtain a mixed liquid two;
[0017] Step 3. Inject carbon black slurry 1 and mixed liquid 2 into two equal-volume syringes respectively, the flow rate of the first pump 1 is 1mL / min-20mL / min, and the two are mixed through the first tee Finally, enter the first section of oil bath at 10-50°C, this section of pipeline is 3-6m long to mix the two evenly; then enter the second section of 100-180°C oil bath, this section of pipeline is 0.5-1m long , after entering the 60-9...
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The invention discloses a preparation method of a platinum-carbon catalyst on the basis of a microreactor, and particularly relates to the technical field of preparation of platinum-carbon catalysts. The preparation method comprises the following steps: 1) weighing carbon black, adding distilled water and ethylene glycol, and stirring the mixture to obtain carbon black slurry I; 2) weighing a chloroplatinic acid aqueous solution and a sodium hydroxide aqueous solution, and uniformly mixing the two solutions to obtain a mixed solution II; 3) respectively injecting the carbon black slurry I and the mixed solution II into two injectors with equal volume, mixing the carbon black slurry I and the mixed solution II through a first three-way pipe, enabling the mixture to enter a first-section oil bath, and enabling the mixture to flow out of the last oil bath, so as to obtain a mixed solution III; 4) injecting a mixed solution IV, prepared from concentrated hydrochloric acid, ethylene glycol and ultrapure water, into an injector, pumping out the mixed solution IV through a second pump, and mixing the mixed solution III with the mixed solution IV through a second three-way pipe to obtain a product mixed solution; and 5) filtering the product mixed solution, washing the filter cake, and drying the filter cake in vacuum to obtain the platinum-carbon catalyst. A microreactor is adopted for preparation, so that the preparation method is simple, and the platinum-carbon catalyst prepared by the method is uniform in particle distribution and good in electrochemical performance.
Description
technical field [0001] The invention relates to a preparation method of a platinum-carbon catalyst based on a microreactor, specifically the technical field of a preparation method of a platinum-carbon catalyst. Background technique [0002] Platinum carbon catalyst is a carrier catalyst that loads platinum on activated carbon, and is the most commonly used type of noble metal catalyst. It can be used in fields such as pharmaceuticals and electronics, and is widely used, and there is a great demand for the catalyst in the market. In the traditional tank reaction, the catalyst yield is small and the distribution of active particles is uneven. The microreactor technology provides a solution to the increase of the catalyst output and the mass transfer and heat transfer problems in the synthesis reaction. Therefore, this application studies a preparation method of a platinum carbon catalyst based on a microreactor. Contents of the invention [0003] The object of the present...
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IPC IPC(8): B01J23/42B01J19/00
CPCB01J23/42B01J19/0093B01J35/33
Inventor 顾军
Owner 南京东焱氢能源科技有限公司