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A kind of preparation method of pt/cu-ni catalyst and method and application thereof for catalytic oxidation of alcohols

A technology of catalysts and alcohols, which is applied in the field of catalyst preparation, can solve the problems of difficult control of the composition and size of synthetic materials, harsh preparation conditions, etc., and achieve the effects of novel preparation methods, energy problem solving, and convenient recycling

Active Publication Date: 2018-01-19
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above preparation methods are harsh and the composition and size of the synthetic materials are difficult to control

Method used

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  • A kind of preparation method of pt/cu-ni catalyst and method and application thereof for catalytic oxidation of alcohols
  • A kind of preparation method of pt/cu-ni catalyst and method and application thereof for catalytic oxidation of alcohols
  • A kind of preparation method of pt/cu-ni catalyst and method and application thereof for catalytic oxidation of alcohols

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Experimental program
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Effect test

Embodiment 1

[0046] A kind of preparation method of Pt / Cu-Ni catalyst, described preparation method comprises the following steps:

[0047] (a) Weigh 1mmol CuCl 2 , 9mmol NiCl 2 and 1mmol boric acid were placed in a beaker, and 30mL of deionized water was added to dissolve it. Stir at room temperature for 30 min to form a homogeneous solution. Then a three-phase electrode (Pt wire as an auxiliary electrode, Ag / AgCl as a reference electrode, and ITO as a working electrode) was inserted into the mixed solution, and electrodeposited at a constant current of 10 mA for 5 min. Afterwards, the ITO deposited with the Cu-Ni product was taken out and washed several times with deionized water, and put into a constant temperature drying oven for constant temperature drying for later use. The SEM image of Cu-Ni product is as follows figure 1 As can be seen from the figure, the Cu-Ni product presents a dendrite microstructure.

[0048] (b) Weigh 1.93mmol (1g) H 2 PtCl 6 ·6H 2 O was placed in a 1...

Embodiment 2

[0053] A kind of preparation method of Pt / Cu-Ni catalyst, described preparation method comprises the following steps:

[0054] (a) Weigh 1mmol CuSO 4 , 9mmol NiCl 2 and 1mmol boric acid were placed in a beaker, and 30mL of deionized water was added to dissolve it. Stir at room temperature for 30 min to form a homogeneous solution. Then a three-phase electrode (Pt wire as an auxiliary electrode, Ag / AgCl as a reference electrode, and ITO as a working electrode) was inserted into the mixed solution, and electrodeposited at a constant current of 10 mA for 5 min. Afterwards, the ITO deposited with the Cu-Ni product was taken out and washed several times with deionized water, and put into a constant temperature drying oven for constant temperature drying for later use. The SEM image of Cu-Ni product is as follows figure 2 shown.

[0055] (b) Weigh 1.93mmol (1g) H 2 PtCl 6 ·6H 2 O was placed in a 100mL volumetric flask, added deionized water to constant volume, mixed and sha...

Embodiment 3

[0057] A kind of preparation method of Pt / Cu-Ni catalyst, described preparation method comprises the following steps:

[0058] (a) Weigh 1mmol Cu(CH 3 COO) 2 , 9mmol NiCl 2 and 1mmol boric acid were placed in a beaker, and 30mL of deionized water was added to dissolve it. Stir at room temperature for 30 min to form a homogeneous solution. Then a three-phase electrode (Pt wire as an auxiliary electrode, Ag / AgCl as a reference electrode, and ITO as a working electrode) was inserted into the mixed solution, and electrodeposited at a constant current of 10 mA for 5 min. Afterwards, the ITO deposited with the Cu-Ni product was taken out and washed several times with deionized water, and put into a constant temperature drying oven for constant temperature drying for later use. The SEM image of Cu-Ni product is as follows image 3 shown.

[0059] (b) Weigh 1.93mmol (1g) H 2 PtCl 6 ·6H 2 O was placed in a 100mL volumetric flask, added deionized water to constant volume, mixed...

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Abstract

The invention discloses a preparation method of a Pt / Cu-Ni catalyst, a method for catalytic oxidation of alcohols and an application thereof. Using the pre-electrodeposited Cu-Ni bimetallic alloy as a heterogeneous template and chloroplatinic acid as a platinum source, a nano-sheet Pt / Cu-Ni catalyst with a dendrite structure is prepared. The preparation method is simple and the conditions are mild. It is controllable, does not require excessively high temperature and strict equipment requirements, and is environmentally friendly and pollution-free. The prepared Pt / Cu-Ni catalyst has a relatively large specific surface area and can efficiently catalyze and oxidize alcohol solutions in acidic solutions. Especially monohydric alcohol solution.

Description

technical field [0001] The invention belongs to the field of catalyst preparation methods and applications, and in particular relates to a preparation method of a Pt / Cu-Ni catalyst and a method for catalytically oxidizing alcohols and its application. Background technique [0002] With the rapid development of society, energy demand is the main problem that human beings urgently need to solve. Methanol fuel cells (DAFCs) are a kind of clean energy, thus also considered to be the most promising energy. In the catalytic oxidation of methanol, Pt shows high catalytic activity, however, Pt is not only expensive but also poor in stability, which hinders the widespread commercial application of methanol fuel cells. [0003] Therefore, a lot of research is currently aimed at finding a novel substance to replace part of Pt and improve its catalytic ability, which leads to the development of Pt-based bimetallic catalysts and even three-way catalysts. This is because the alloy mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89C25D3/56C25D3/50C25D5/12C25B3/02C25B11/08H01M4/92C25B3/23
CPCH01M4/921C25D3/50C25D3/562C25D5/12B01J23/8926B01J37/348C25B3/23C25B11/051C25B11/093B01J35/33Y02E60/50
Inventor 倪永红张胡英钱广萍
Owner ANHUI NORMAL UNIV
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