Monatomic palladium-cobalt bimetallic nano-catalyst for efficiently catalyzing benzene oxidation

A bimetallic nano-technology that catalyzes benzene with high efficiency. It is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, non-metallic elements, etc., and can solve air pollution, human health, ecological security threats, etc. problems, to achieve good stability, good application prospects, and uniform particle size

Active Publication Date: 2020-01-03
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, these exhaust gases will also be oxidized in the atmosphere to generate photochemical smog, ozone holes, etc., causing great air pollution
Moreover, these VOCs themselves, as toxic gases, will p

Method used

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  • Monatomic palladium-cobalt bimetallic nano-catalyst for efficiently catalyzing benzene oxidation
  • Monatomic palladium-cobalt bimetallic nano-catalyst for efficiently catalyzing benzene oxidation
  • Monatomic palladium-cobalt bimetallic nano-catalyst for efficiently catalyzing benzene oxidation

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Experimental program
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Embodiment 1

[0026] Feeding according to the molar ratio of metal palladium and cobalt is 1:10: Weigh 0.05mmol palladium acetylacetonate and 0.25mmol dicobalt octacarbonyl, add them to 5ml dichlorobenzene, stir at room temperature for 30min under the protection of argon, and record it as solution A . Weigh 2 mmol of didodecanylamine and 0.075 g of tri-n-octylphosphine and add them into 7.5 ml of dichlorobenzene, stir and dissolve at 110°C in an argon atmosphere, and record it as solution B. Solution B was heated to 180°C in an argon atmosphere and kept for 10 min, at which time solution A was quickly injected into solution B. The temperature was raised to 200° C. and kept for 20 minutes, then lowered to room temperature, and centrifuged to obtain PdCo bimetallic nanocrystals with uniform size. The nanoparticles obtained by centrifugation were dispersed in cyclohexane for storage.

[0027] The obtained PdCo bimetallic nanocrystals were loaded on the carrier by impregnation method, followe...

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Abstract

The invention discloses a monatomic palladium-cobalt bimetallic nano-catalyst for efficiently catalyzing benzene oxidation, and belongs to the technical field of functional materials, wherein PdCo bimetallic nanoparticles are loaded onto a gamma-Al2O3 carrier, firing is performed to form a Pd1Co1/Al2O3 catalyst, and the loading capacity of the metal palladium is 0.4 wt%. The preparation method comprises: in a dichlorobenzene system, simultaneously pyrolyzing and reducing palladium acetylacetonate and octacarbonyldicobalt by adopting an oil-phase one-step pyrolysis method to form PdCo bimetallic particles with uniform size, and loading the metal particles onto an Al2O3 carrier by adopting an impregnation method, wherein the Pd loading capacity is 0.4 wt%; and carrying out hydrothermal roasting on the supported catalyst at a temperature of 800 DEG C to form the Pd1Co1/Al2O3 nano-catalyst. The Pd1Co1/Al2O3 nano-catalyst prepared by the method is simple in preparation process, the double metals are in monatomic dispersion, and the Pd1Co1/Al2O3 nano-catalyst has good application prospect in the field of catalysis.

Description

technical field [0001] The present invention relates to a Pd 1 co 1 / Al 2 o 3 Nano-catalyst and its preparation method, specifically related to the preparation of PdCo alloy particles with uniform size by one-step oil phase pyrolysis method, which is loaded on Al by impregnation method 2 o 3 surface, followed by hydrothermal calcination to form Pd 1 co 1 / Al 2 o 3 . Pd with high catalytic activity for benzene oxidation 1 co 1 / Al 2 o 3 The nanometer catalyst belongs to the technical field of functional materials. Background technique [0002] With the rapid progress of urbanization and industrialization, fine chemicals such as various paints and dyes, and daily necessities are widely used. The extensive use of these items rich in volatile organic compounds has led to the generation of various waste gases. These exhaust gases react with each other in the atmosphere to form a large amount of particulate matter (PM 2.5 / PM 10 etc.), leading to the formation of ...

Claims

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Application Information

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IPC IPC(8): B01J23/89C01B32/50C01B5/00
CPCB01J23/8913B01J35/0066C01B32/50C01B5/00
Inventor 戴洪兴侯志全刘雨溪邓积光
Owner BEIJING UNIV OF TECH
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