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Preparation method and application of wool-supported nano Pd-Co catalyst

A catalyst, pd-co technology, applied in the preparation of organic compounds, chemical instruments and methods, catalysts for physical/chemical processes, etc., can solve the problems of waste of wool resources, environmental pollution in the location of the enterprise, and achieve high loading rate and simple use. , the effect of simple operation

Inactive Publication Date: 2014-08-20
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in the weaving process, about 1~5% of short fibers are wastes. The incomplete utilization of these wastes is a serious waste of wool resources and pollutes the environment where the enterprise is located.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Wool pretreatment: Take raw wool or short wool fibers discarded by wool spinning mills, wash with water, remove impurities, dry and crush, and sieve with a 10-mesh sieve to obtain pretreated wool;

[0023] (2) Wool degreasing treatment: In the reactor, add 1g NaOH, 2.0g sodium dodecylbenzenesulfonate, 88mL deionized water, 9g pretreated wool, stir well and soak for 18h, boil for 15min, cool and use Wash with deionized water until neutral, after suction filtration, soak in 100 mL of acetone for 6 hours at 60°C, after cooling, filter with suction, wash with water until neutral, and dry at 80°C to obtain degreased wool;

[0024] (3) Preparation of mercapto wool: In the reactor, add 50 mL thioglycolic acid, 40 mL THF, 10 g degreased wool, 4 drops of concentrated sulfuric acid, stopper, reflux at 60 °C for 5 h under stirring, and then use deionized water Washing, suction filtration, until the filtrate is neutral, washing with a small amount of ethanol, and drying in an o...

Embodiment 2

[0027](1) Wool pretreatment: Take raw wool or short wool fibers discarded by wool spinning mills, wash with water, remove impurities, dry and crush, and sieve with a 20-mesh sieve to obtain pretreated wool;

[0028] (2) Wool degreasing treatment: In the reactor, add 2g NaOH, 1.0g betaine, 85mL deionized water, 12g pretreated wool, stir evenly and soak for 16h, boil for 20min, wash with deionized water until neutral after cooling , after suction filtration, soak in 60 mL of acetone for 6 hours at 60°C, after cooling, filter with suction, wash with water until neutral, and dry at 80°C to obtain degreased wool;

[0029] (3) Preparation of mercapto wool: In the reactor, add 56 mL thioglycolic acid, 36 mL THF, 8 g degreased wool, 3 drops of concentrated sulfuric acid, stopper, reflux at 60 ° C for 4 h under stirring, and then use deionized water Washing, suction filtration, until the filtrate is neutral, washing with a small amount of ethanol, and drying in an oven at 50°C to obtai...

Embodiment 3

[0032] (1) Wool pretreatment: Take raw wool or short wool fibers discarded by wool spinning mills, wash with water, remove impurities, dry and crush, and sieve with a 10-mesh sieve to obtain pretreated wool;

[0033] (2) Wool degreasing treatment: In the reactor, add 0.5g NaOH, 3.0g sodium dodecylbenzenesulfonate, 91.5mL deionized water, 5g pretreated wool, stir well and soak for 20h, boil for 20min, after cooling Wash with deionized water until neutral, after suction filtration, soak in 75 mL of acetone for 6 hours at 60°C, after cooling, filter with suction, wash with water until neutral, and dry at 80°C to obtain degreased wool;

[0034] (3) Preparation of mercapto wool: In the reactor, add 46 mL thioglycolic acid, 36 mL THF, 18 g degreased wool, 4 drops of concentrated sulfuric acid, stopper, reflux at 60 ° C for 6 h under stirring, and then use deionized water Washing, suction filtration, until the filtrate is neutral, washing with a small amount of ethanol, and drying in...

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Abstract

The invention discloses a preparation method and an application of a wool-supported nano Pd-Co catalyst. The preparation method comprises the following steps: 1) carrying out impurities removal, washing and degreasing treatment on wool; 2) adding mercaptoacetic acid, tetrahydrofuran, the degreased wool and concentrated sulfuric acid, adding a plug, at the temperature of 60 DEG C, refluxing for 4-6 h with stirring, washing with water, carrying out suction filtration until the filtrate is neutral, drying, and thus obtaining mercapto wool; 3) adding the mercapto wool into a mixed solution of palladium ions and cobalt ions, adjusting the pH value of the solution to 6.0-7.5, carrying out stirring reaction for 20-40 min at the room temperature, after filtering separation, putting the obtained solid into a 40% hydrazine hydrate solution with a solid-liquid ratio of 1 g:15-30 mL, carrying out ultrasonic reaction for 35 min, filtering, washing with distilled water, drying at the temperature of 90 DEG C, and thus obtaining the wool-supported nano Pd-Co catalyst. The wool-supported nano Pd-Co catalyst has the characteristics of simple preparation method, good stability, degradability, waste reutilization, mild reaction conditions, high catalytic activity, little using amount and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of supported catalysts, in particular to a preparation method and application technology of a wool-supported nano Pd-Co catalyst. Background technique [0002] Catalysts play a very important role in many chemical reactions. For example, in catalytic hydrodechlorination technology, catalysts used for catalytic dechlorination of chlorinated organic compounds include single-metal catalysts and composite catalysts. Monometallic catalysts are mainly noble metal supported catalysts such as Pd and Pt, which have high activity and the main products are saturated hydrocarbons. This type of catalyst has two disadvantages. On the one hand, for industrial production, the economic value of saturated hydrocarbons is not as high as that of unsaturated hydrocarbons; on the other hand, catalyst poisoning is prone to occur. The composite catalyst is doped with a second metal on the basis of a single metal cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28B01J35/06C07C1/26C07C15/04C07C37/00C07C39/04
CPCY02P20/52
Inventor 李慧芝许崇娟戚玉华
Owner UNIV OF JINAN
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