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Nano-gold catalyst for deeply removing carbon monoxide, preparing method and application thereof

A carbon monoxide and catalyst technology, applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problem of insufficient ability, short catalyst life, and poor stability of Au catalyst and other problems, to achieve good low-temperature activity and good stability

Active Publication Date: 2012-10-24
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problems in the prior art that the low-temperature deep removal of trace carbon monoxide is not enough, the stability of the Au catalyst is not good, or the life of the catalyst is short, etc., a nano-Au / CuO that deeply removes trace CO from the material is proposed. Catalysts and their preparation and application

Method used

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  • Nano-gold catalyst for deeply removing carbon monoxide, preparing method and application thereof
  • Nano-gold catalyst for deeply removing carbon monoxide, preparing method and application thereof
  • Nano-gold catalyst for deeply removing carbon monoxide, preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0053] Embodiment 1~7: carrier preparation

[0054] Mix an appropriate amount of 1 mole / liter copper nitrate solution with a certain amount of 1 mole / liter zirconium nitrate solution, 1 mole / liter zinc nitrate solution, 1 mole / liter silver nitrate solution, and 1 mole / liter iron nitrate solution. solution, 1 mol / L manganese nitrate solution, and 1 mol / L cerium nitrate solution to prepare a mixed solution, and then add the mixed solution and 1 mol / L sodium carbonate solution in parallel to a 20L container for precipitation , the precipitation temperature is 50°C, and the pH value is controlled at 8.5±0.5. Then it was aged for 2 hours under vigorous stirring, and the aging temperature was 60°C. It was then filtered and washed at least six times with deionized water at 80 °C until Na 2 The O content is less than 0.05%. Dry at 110°C for 12 hours, and bake at 400°C for 6 hours. Produced containing CuO / ZrO 2 (10 / 90), CuO / ZrO 2 (35 / 65), CuO / ZrO 2 (95 / 5), CuO / ZnO(35 / 65), CuO / Fe...

Embodiment 8～14

[0056] Take 100mL carriers A~G respectively, the particle size is 40~60 mesh, add 0.1mol / L NaOH aqueous solution to adjust 1.0×10 -4 The pH value of the mol / L chloroauric acid solution is 7, the solution temperature is maintained at 60°C, and stirred for 15 minutes; add the carrier while stirring, impregnate the carrier, and then add 0.1mol / L NaOH solution to adjust the pH value to 7 , stirred for 120min, soaked in 0.1mol / L dilute ammonia water for half an hour, then washed 6 times with deionized water at 70°C to remove Cl - to dozens of ppm, then dried at 80°C for 12 hours, and fired at 350°C for 6 hours. 0.01wt% Au / CuO catalysts 1-7 were prepared respectively # .

Embodiment 15

[0058] Take 100mL carrier B with a particle size of 40-60 mesh, add 0.1mol / L NaOH solution to adjust the pH value of the above-mentioned chloroauric acid solution to 6, and keep the solution temperature at 80°C. Others are the same as in Examples 8-14. 0.01wt% Au / catalyst 8 was prepared # .

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Abstract

The invention discloses nano-Au catalyst and a preparing method and application thereof. The catalyst comprises Au and an addition agent which are loaded on mixed oxide which mainly contains copper oxide, wherein the addition agent is one or more of Pt, Pd, Ag, Cu, Fe, Co, Ni, Zn, V, Mn, Mg, Ca, Cs, Li, K, La, Ce and Zr; the particle size of Au is 1 to 6 nm; and the content of Au is 0.001 to 1 wtpercent and the content of the addition agent is 0 to 50 wt percent which are counted by the total weight of the catalyst. The catalyst has good low-temperature activity and good stability, can ensure the content of the micro carbon monoxide in material is deeply removed under the condition of low temperature (lower than 150 DEG C) or even approximately room temperature (lower than 50 DEG C). Under the condition that oxygen in the material is larger than, equal to or smaller than the oxidation reaction stoichiometric ratio of carbon monoxide, or even the material does not contain oxygen, the content of the micro carbon monoxide in material can be deeply removed.

Description

technical field [0001] The invention belongs to the technical field of catalysts, more specifically, the invention relates to a nano-Au catalyst with a simple and repeatable preparation method, a preparation method thereof and a method for removing carbon monoxide. Background technique [0002] In various industrial fields, the presence of trace carbon monoxide is often harmful to the reaction system and needs to be removed as an impurity. In the electronics industry, especially in the manufacture of semiconductor components, "electronically pure" high-purity gases are required, and the carbon monoxide impurity contained is required to be less than several ppb. With the development of polyolefin technology, highly active polyolefin catalysts (such as metallocene catalysts, etc.) are very sensitive to poisons, and polyolefin raw materials are required to be polymer-grade olefins. Specifically, carbon monoxide impurities in olefin raw materials do not exceed 30ppb. Therefore,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J37/02C01B31/20B01D53/14C01B32/50
Inventor 王育戴伟彭晖王桂英穆玮刘海江汪晓菁
Owner CHINA PETROLEUM & CHEM CORP
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