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Preparation method for Pt-Ni nano-catalyst

A nano-catalyst, pt-ni technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of low catalytic efficiency and high reaction temperature of catalysts , to achieve the effect of lowering the temperature, lowering the temperature condition and improving the catalytic efficiency

Inactive Publication Date: 2017-09-26
ANHUI XINGYU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing method requires a higher reaction temperature when preparing nano-catalysts, and the catalysts produced have the disadvantage of low catalytic efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of a Pt-Ni nano catalyst, its components by weight: 38 parts of platinum ethyl acetate, 30 parts of nickel 2,4-pentanedione dihydrate, 31 parts of modified diatomite, gelling agent 23 parts and 9 parts of tensio-active agent; Its preparation method comprises the following steps:

[0022] a. Under the condition of 25°C, place platinum ethyl acetate in the reaction kettle, add water with a mass three times that of platinum ethyl acetate into the reaction vessel, and then add modified diatomaceous earth, Surfactant and gelling agent are mixed and stirred to obtain mixed component A;

[0023] b. Add nickel 2,4-pentanedione dihydrate to mixed component A, place the reaction kettle in an oven after ultrasonic vibration for 20 minutes, set the temperature at 150°C, and react for 14 hours to obtain mixed component B;

[0024] c. After the reaction is finished, the mixed component B is repeatedly washed with absolute ethanol four times, and then naturally a...

Embodiment 2

[0027] A preparation method of a Pt-Ni nano catalyst, its components by weight: 36 parts of platinum ethyl acetate, 33 parts of nickel 2,4-pentanedione dihydrate, 28 parts of modified diatomite, gelling agent 25 parts and 7 parts of tensio-active agent; Its preparation method comprises the following steps:

[0028] a. Under the condition of 25°C, place platinum ethyl acetate in the reaction kettle, add water with a mass three times that of platinum ethyl acetate into the reaction vessel, and then add modified diatomaceous earth, Surfactant and gelling agent are mixed and stirred to obtain mixed component A;

[0029] b. Add nickel 2,4-pentanedione dihydrate to the mixed component A, place the reaction kettle in the oven after ultrasonic vibration for 25 minutes, set the temperature at 156°C, and the reaction time is 16 hours to obtain the mixed component B;

[0030] c. After the reaction is finished, the mixed component B is repeatedly washed with absolute ethanol four times, ...

Embodiment 3

[0033] A preparation method of a Pt-Ni nano-catalyst, its components by weight: 43 parts of platinum ethyl acetate, 35 parts of nickel 2,4-pentanedione dihydrate, 32 parts of modified diatomite, gelling agent 29 parts and 13 parts of tensio-active agent; Its preparation method comprises the following steps:

[0034] a. Under the condition of 25°C, place platinum ethyl acetate in the reaction kettle, add water with a mass three times that of platinum ethyl acetate into the reaction vessel, and then add modified diatomaceous earth, Surfactant and gelling agent are mixed and stirred to obtain mixed component A;

[0035] b. Add nickel 2,4-pentanedione dihydrate to the mixed component A, place the reaction kettle in the oven after ultrasonic vibration for 31 minutes, set the temperature at 163°C, and the reaction time is 18 hours to obtain the mixed component B;

[0036] c. After the reaction is finished, the mixed component B is repeatedly washed with absolute ethanol four times,...

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Abstract

The invention relates to the technical field of functional materials, in particularly to a preparation method for a Pt-Ni nano-catalyst. The Pt-Ni nano-catalyst is prepared from the following components in parts by weight: 36 to 43 parts of platinum bis(acetylacetonate), 30 to 37 parts of Nickel(II) acetylacetonate, 28 to 34 parts of modified diatomite, 23 to 29 parts of a gelling agent and 7 to 13 parts of a surfactant. According to the method, citric acid is added into the platinum bis(acetylacetonate) and the Nickel(II) acetylacetonate, platinum ions and nickel ions are dissolved from the platinum bis(acetylacetonate) and the Nickel(II) acetylacetonate in water, and the platinum ions and the nickel ions undergo complexing reaction with the citric acid, so that the dispersion degree of metal ions is increased, the reaction temperature is effectively reduced, a temperature condition required by reaction is reduced, and energy resources are saved; the modified diatomite is higher in porosity, the platinum bis(acetylacetonate) and the Nickel(II) acetylacetonate flow into pores of the modified diatomite, and platinum and nickel are uniformly distributed on the surface of a carrier, so that the area of contact of the platinum and the nickel with a reactant is enlarged, and the catalysis efficiency of the Pt-Ni nano-catalyst is improved.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a preparation method of a Pt-Ni nanometer catalyst. Background technique [0002] Catalysts are used in chemical production, scientists' experiments and life activities. For example, vanadium pentoxide is used as a catalyst in the production of sulfuric acid. Synthesis of ammonia from nitrogen and hydrogen requires the use of iron-based multi-group catalysts to increase the reaction rate. Catalysts are indispensable in oil refineries. Different catalysts can be used to obtain gasoline and kerosene of different qualities. Chemical synthesis of acidic and basic color Seth catalysts. Vehicle exhaust contains harmful carbon monoxide and nitrogen monoxide, which can be quickly converted into harmless carbon dioxide and nitrogen by using platinum and other metals as catalysts. [0003] Nano-catalysts have a special nano-structure, which has properties that ordinary cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J35/10
CPCB01J23/892B01J35/60
Inventor 张升张宽宇金文艺李静
Owner ANHUI XINGYU CHEM
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