Metal-loaded cerium-zirconium solid solution material, preparation method thereof and application of metal-loaded cerium-zirconium solid solution material in catalytic synthesis of carvone

A cerium zirconium solid solution and metal-loaded technology, which is applied in the field of catalysis and can solve problems such as large environmental pollution

Active Publication Date: 2020-10-02
CHINA TOBACCO YUNNAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Chinese patent CN106944121A discloses a catalyst for catalytic oxidation of NO and its preparation method and application, but the catalyst system contains heavy metal Cr, which causes great environmental pollution
Chinese patent CN102716737A discloses a preparation method of transition metal chromium supported by cerium-zirconium solid solution and its application in the selective catalysis of NO in flue gas, but the load is heavy metal chromium, which causes great environmental pollution

Method used

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  • Metal-loaded cerium-zirconium solid solution material, preparation method thereof and application of metal-loaded cerium-zirconium solid solution material in catalytic synthesis of carvone
  • Metal-loaded cerium-zirconium solid solution material, preparation method thereof and application of metal-loaded cerium-zirconium solid solution material in catalytic synthesis of carvone
  • Metal-loaded cerium-zirconium solid solution material, preparation method thereof and application of metal-loaded cerium-zirconium solid solution material in catalytic synthesis of carvone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: Preparation of cerium-zirconium solid solution loaded with metal cobalt

[0036]Dissolve 4.364g of cerium nitrate hexahydrate, 2.336g of zirconium oxynitrate, 8.406g of citric acid and cobalt nitrate hexahydrate in distilled water, stir until the solution is clear, then add absolute ethanol to obtain a precursor solution, foam overnight at 90°C, Calcined at 500°C for 4h; Ce 0.5 Zr 0.5 o 2 / Co.

[0037] The steps of loading metal In, Cd, Mn, Zn, Cr, Ni or Al on the cerium-zirconium solid solution are the same as above. The metal loading molar ratio was 5%.

Embodiment 2

[0038] Embodiment 2: Preparation of cerium-zirconium solid solution loaded with metal indium

[0039] According to the steps of Example 1, using InCl 3 .4H 2 O as the precursor of metal indium to prepare supported metal indium is a solid solution of cerium and zirconium. The amount of precursor was changed to prepare materials with molar ratios of 1%, 5%, 10%, 15%, and 20% metal indium supported on cerium-zirconium solid solution, respectively.

[0040] figure 1 and figure 2 is to obtain Ce 0.5 Zr 0.5 o 2 / In(5%) (that is, indium with a loading molar ratio of metal indium of 5%) material characterization results. From figure 1 It can be seen that Ce 0.5 Zr 0.5 o 2 / In (5%) meets the criteria for mesoporous materials. From figure 2 It can be seen that the cerium-zirconium solid solution loaded with metal indium does not change the material structure significantly, and the material Ce 0.5 Zr 0.5 o 2 / In(5%) and material CeO 2 The peak shape is also very consis...

Embodiment 3

[0041] Example 3: The metal-loaded cerium-zirconium solid solution material is used as a catalyst to catalyze the oxidation of limonene to prepare carvone. The reaction steps are as follows:

[0042] Take 2mL of R-(+)-limonene and 150mg of catalyst into a 25mL two-necked flask, add 5g of acetic acid as a solvent, connect the flask to a condenser, and put it into an oil bath with magnetic stirring at a temperature of 80°C Inside, unscrew and stir, feed 1.8L / min air as an oxidant, and the reaction time is 12h. After the reaction time is completed, take out the flask, and after the reaction solution is cooled, filter out the catalyst, and dry the sample solution with anhydrous magnesium sulfate. Finally, filter and analyze the sample qualitatively and quantitatively by gas chromatography.

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Abstract

The invention discloses a metal-loaded cerium-zirconium solid solution material and a preparation method thereof, and application of the metal-loaded cerium-zirconium solid solution material in catalytic synthesis of carvone. The metal-loaded cerium-zirconium solid solution material is used as a catalyst for selective catalytic synthesis of carvone, and the optimal condition for catalytic synthesis of carvone is found; and a new way is provided for green synthesis of carvone.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and in particular relates to a metal-loaded cerium-zirconium solid solution material, a preparation method thereof and an application for catalytically synthesizing carvone. Background technique [0002] Carvone, as a typical terpenoid, has antibacterial activity. In addition, carvone is also an important spice, which is widely used in medicine, cosmetics and food industry. Carvone can be extracted from natural products, but because the production process of directly extracting carvone from natural products cannot meet the current market demand, therefore, the synthesis of carvone by chemical synthesis is more and more popular. The chemical synthesis method is to obtain the product carvone by performing one or more steps of organic reaction on simple and easy-to-obtain raw materials. Since the basic skeletons of limonene and carvone are similar, and limonene is easy to obtain, since the 1950s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J23/08B01J23/10B01J23/34B01J23/26C07C45/34C07C49/647
CPCB01J23/002B01J23/83B01J23/08B01J23/10B01J23/34B01J23/26C07C45/34B01J2523/00C07C2601/16B01J2523/3712B01J2523/48B01J2523/845B01J2523/33B01J2523/28B01J2523/72B01J2523/27C07C49/647
Inventor 刘秀明段焰青者为李源栋张翼鹏党立志李慧天
Owner CHINA TOBACCO YUNNAN IND
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