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Method for preparing platinum-carbon catalyst

A technology of platinum carbon catalyst and chloroplatinic acid, which is applied in the field of catalysis, can solve the problems of uncontrollable particle size, complex process, long production cycle, etc., achieve process stability and repeatability, fast and simple operation, and low utilization Effect

Inactive Publication Date: 2015-07-29
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: complex process, long production cycle, and uncontrollable particle size

Method used

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  • Method for preparing platinum-carbon catalyst
  • Method for preparing platinum-carbon catalyst
  • Method for preparing platinum-carbon catalyst

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Experimental program
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Effect test

Embodiment 1

[0033] The method for preparing the platinum carbon catalyst of the present embodiment comprises the following steps:

[0034] 1. Preparation of chloroplatinic acid alcohol solution

[0035] Dilute 1.0 g of chloroplatinic acid in 25 mL of alcohol solvent 1 to prepare a 1.93 mmol / L chloroplatinic acid alcohol solution;

[0036] Chloroplatinic acid is H 2 PtCl 6 ·6H 2 O, alcohol solvent one is ethanol;

[0037] Second, the preparation of sodium hydroxide solution

[0038] Dissolve 0.08g of sodium hydroxide in 40mL of alcoholic solvent II to prepare a sodium hydroxide alcoholic solution with a concentration of 0.05mol / L;

[0039] The alcohol solvent two is ethanol;

[0040] 3. Preparation of activated carbon supported platinum carbon catalyst

[0041] Add pre-prepared chloroplatinic acid alcohol solution to the activated carbon carrier, and then add sodium hydroxide alcohol solution to carry out microwave reduction;

[0042] The loading capacity of the activated carbon ca...

Embodiment 2

[0049] The method for preparing the platinum carbon catalyst of the present embodiment comprises the following steps:

[0050] 1. Preparation of chloroplatinic acid alcohol solution

[0051] Dilute 5.0 g of chloroplatinic acid in 25 mL of alcohol solvent 1 to prepare a 9.65 mmol / L chloroplatinic acid alcohol solution;

[0052] The chloroplatinic acid is H 2 PtCl 6 ·6H 2 O, the alcohol solvent one is a combination of glycerol and n-octanol;

[0053] Second, the preparation of sodium hydroxide solution

[0054] Dissolve 0.8g of sodium hydroxide in 40ml of alcoholic solvent II to form a sodium hydroxide alcoholic solution with a concentration of 0.5mol / L;

[0055] The second alcohol solvent is a combination of glycerol and n-octanol;

[0056] 3. Preparation of activated carbon supported platinum carbon catalyst

[0057] Add pre-prepared chloroplatinic acid alcohol solution to the activated carbon carrier, and then add sodium hydroxide alcohol solution to carry out microwav...

Embodiment 3

[0064]The method for preparing the platinum carbon catalyst of the present embodiment comprises the following steps:

[0065] 1. Preparation of chloroplatinic acid alcohol solution

[0066] Dilute 10.0 g of chloroplatinic acid to 25 mL of alcohol solvent 1 to prepare a concentration of 19.3 mmol / L chloroplatinic acid alcohol solution;

[0067] The chloroplatinic acid is H 2 PtCl 6 ·6H 2 O, the alcohol solvent one is a combination of ethanol, glycerol and n-octanol;

[0068] Second, the preparation of sodium hydroxide solution

[0069] Dissolve 0.4g of sodium hydroxide in 40mL of alcoholic solvent II to prepare a sodium hydroxide alcoholic solution with a concentration of 0.25mol / L;

[0070] Described alcohol solvent two is the combination of ethanol, glycerol and n-octanol;

[0071] 3. Preparation of activated carbon supported platinum carbon catalyst

[0072] Add pre-prepared chloroplatinic acid alcohol solution to the activated carbon carrier, and then add sodium hydr...

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Abstract

The invention belongs to the technical field of catalysis and relates to a method for preparing a platinum-carbon catalyst which is high in activity and stability. The method comprises the following steps: 1, preparing a chloroplatinic acid alcohol solution : diluting the chloroplatinic acid with an alcohol solvent I so as to obtain the chloroplatinic acid alcohol solution; 2, preparing a sodium hydroxide solution : dissolving sodium hydroxide into an alcohol solvent II so as to obtain the sodium hydroxide solution; 3, preparing an activated-carbon-loaded platinum-carbon catalyst: adding the chloroplatinic acid alcohol solution prepared in advance in an activated carbon carrier, then adding the sodium hydroxide solution and carrying out microwave reduction; 4, cooling and drying, after completion of microwave reduction in the step 3, cooling the mixture to room temperature, adding deionized water, the volume of which is the same as that of the mixture, carrying out extraction filtration and washing, and carrying out vacuum drying on the catalyst. According to the invention, the operation is quick and simple, process stability and repeatability are good, active component particles are distributed uniformly, the particle size range is narrow and the fact that the particle size is controllable is realized according to the quantity of sodium hydroxide and the solvents; the catalyst prepared through the preparation method is high in activity and good in stability.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and in particular relates to a method for preparing a platinum carbon catalyst with high activity and high stability in one step. Background technique [0002] Liquid-phase hydrogenation-supported noble metal nanocatalysts are widely used in important industrial fields such as energy, environmental protection, and food processing. The key difficulty in their industrial application is the stability of the catalyst. Traditional impregnation and precipitation methods to prepare supported catalysts are complicated, the production cycle is long, the repeatability of batches of catalysts is poor, the particle size distribution of the active components of the catalysts is wide and unevenly distributed on the carrier, and the stability of the catalysts is poor. , low activity and other disadvantages. Microwave preparation of supported catalysts is a new method. The microwave reduction method has the ...

Claims

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Application Information

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IPC IPC(8): B01J23/42
Inventor 刘漫红李丹白强隋凝肖海连于伟泳
Owner QINGDAO UNIV OF SCI & TECH