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Palladium gallium oxide double-metal nano-catalyst capable of efficiently catalyzing methane to combust and preparation

A bimetallic nano- and nano-catalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, heterogeneous catalyst chemical elements, etc., to achieve good application prospects, size controllable, particle The effect of uniform diameter

Inactive Publication Date: 2017-05-24
BEIJING UNIV OF TECH
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Problems solved by technology

To the best of our knowledge, no literature has reported Pd-GaO x / Al 2 o 3 The Preparation Method of Catalyst Nanocrystal and Its Application in Catalytic Oxidation of Methane

Method used

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  • Palladium gallium oxide double-metal nano-catalyst capable of efficiently catalyzing methane to combust and preparation
  • Palladium gallium oxide double-metal nano-catalyst capable of efficiently catalyzing methane to combust and preparation
  • Palladium gallium oxide double-metal nano-catalyst capable of efficiently catalyzing methane to combust and preparation

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Embodiment 1

[0023] Feeding according to the molar ratio of metal palladium and gallium is 1:4: take 0.05mmol palladium acetylacetonate and 0.2mmol GaCl 3 Add the butanol solution of oleylamine into 10ml of oleylamine, and stir at 70°C for 30min under the protection of argon to form a solution, which is designated as solution A. Weigh 0.04mol of borane tert-butylamine and add it into 2.5ml of oleylamine, stir to dissolve, and record it as solution B. Solution A was heated to 180° C. for 10 min in an argon atmosphere, and solution B was slowly dropped into solution A at this time. Then the mixed solution was heated up to 250° C., kept for 1 h, then lowered to room temperature, centrifuged and washed to obtain PdGa bimetallic nanocrystals with uniform size. Finally, the nanoparticles obtained by centrifugation are dispersed in a certain amount of cyclohexane for storage.

[0024] The obtained PdGa bimetallic nanocrystals are loaded on the carrier by impregnation method, and then undergo a ...

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Abstract

The invention provides a palladium gallium oxide double-metal nano-catalyst capable of efficiently catalyzing methane to combust and preparation and belongs to the technical field of functional materials. PdGa double-metal nano-particles are loaded on a gamma-Al2O3 carrier, and then the carrier is fired to form a Pd-GaOx / Al2O3 catalyst. The loading amount of metal palladium is 1.0wt%. A preparation method comprises the following steps: simultaneously reducing palladium acetylacetonate and gallium chloride in an oleylamine system by adopting a liquid-phase co-reduction method, so as to form PdGa double-metal particles with a uniform size; loading the metal particles on an Al2O3 carrier by adopting an immersion method, wherein the Pd loading amount is 1.0wt%; and firing a load type catalyst at 450 DEG C to form the Pd-GaOx / Al2O3 nano-catalyst. The Pd-GaOx / Al2O3 nano-catalyst prepared by the invention has the advantages that a preparation process is simple, the size of the nano-particles is uniform, and the nano-catalyst has a good application prospect in the field of catalysis.

Description

technical field [0001] The present invention relates to a kind of Pd-GaO x / Al 2 o 3 Nano-catalyst and its preparation method, specifically related to the preparation of PdGa alloy particles with uniform size by liquid phase co-reduction method, which is loaded on Al by impregnation method 2 o 3 surface, followed by firing to form Pd-GaO x / Al 2 o 3 structure. Pd-GaO with high catalytic activity for methane oxidation x / Al 2 o 3 The nanometer catalyst belongs to the technical field of functional materials. Background technique [0002] With the continuous improvement of people's living standards, natural gas is widely used due to its abundant reserves, low price, convenient transportation and use, high thermal efficiency, and low pollution. However, the main component of natural gas is the most stable hydrocarbon - methane (content is about 80% to 90%) ), it is usually difficult to activate, and the traditional combustion method needs to be burned at a high temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89
CPCB01J23/002B01J23/896B01J2523/00B01J2523/824B01J2523/32B01J2523/31
Inventor 戴洪兴侯志全刘雨溪邓积光
Owner BEIJING UNIV OF TECH
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