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A kind of composite platinum nanoparticle and metal nitride material catalyst and its preparation method and application

A platinum nanoparticle, nitride technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as unfavorable industrial large-scale production, polymerization of phenolic compounds, catalyst deactivation, etc. Achieve the effect of low cost, mild conditions and high conversion rate of raw materials

Active Publication Date: 2022-04-29
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lignin-based phenolic compounds generally use phenol and guaiacol as model substrates. Currently, there are literature reports on the conversion of lignin-based phenolic compounds into KA oil and its derivatives under heterogeneous conditions. However, the traditional liquid The hydrogen consumption of phase hydrogenation is high, and it needs to be carried out under high temperature and high pressure, and high temperature and high pressure can easily lead to the polymerization and coking of phenolic compounds, and cause rapid deactivation of catalysts
Therefore, it is not conducive to industrial mass production

Method used

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  • A kind of composite platinum nanoparticle and metal nitride material catalyst and its preparation method and application
  • A kind of composite platinum nanoparticle and metal nitride material catalyst and its preparation method and application
  • A kind of composite platinum nanoparticle and metal nitride material catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Synthesis of Pt / CoN@BCN catalyst and its electrocatalytic reduction of guaiacol to prepare KA oil and its derivatives

[0034] (1) Dissolve 0.15 g of boric acid, 5 g of urea, and 0.5 g of polyethylene glycol into 50 mL of water and disperse uniformly by ultrasonic, then add 0.065 g of cobalt phthalocyanine, stir at room temperature for 1 hour, and then transfer the obtained solution to an oven , dried at 120°C for 14 hours to obtain a solid mixture;

[0035] (2) Place the solid mixture obtained in step (1) in a tube furnace, raise the temperature from room temperature to 900°C at a rate of 5°C / min under an argon atmosphere, and calcinate at 900°C for 4 hours to obtain a catalyst carrier (The catalyst support is marked as CoNx@BCN);

[0036] (3) Take 20 mg of the catalyst carrier CoNx@BCN obtained in step (2) and 5 mg of chloroplatinic acid into 10 mL of deionized water, and ultrasonically mix the solution for 1 hour to obtain a solution A; dissolve 8 mg of sod...

Embodiment 2

[0042] Example 2: Synthesis of Pt / FeNx@BCN catalyst and its electrocatalytic reduction of guaiacol to prepare KA oil and its derivatives

[0043] (1) Dissolve 0.15 g of boric acid, 5 g of urea, and 0.5 g of polyethylene glycol into 50 mL of water for ultrasonic dispersion, then add 0.060 g of iron phthalocyanine, stir at room temperature for 1 hour, and then transfer the resulting solution to an oven , dried at 100°C for 12 hours to obtain a solid mixture;

[0044] (2) Place the solid mixture obtained in step (1) in a tube furnace, raise the temperature from room temperature to 900°C at a rate of 5°C / min under an argon atmosphere, and calcinate at 900°C for 4 hours to obtain a catalyst carrier (The catalyst support is marked as FeNx@BCN);

[0045] (3) Take 20 mg of the catalyst carrier FeNx@BCN obtained in step (2) and 5 mg of chloroplatinic acid into 10 mL of deionized water, and ultrasonically mix the solution for 1 hour to obtain A solution; dissolve 8 mg of sodium borohyd...

Embodiment 3

[0050] Example 3: Synthesis of Pt / NiNx@BCN catalyst and its electrocatalytic reduction of guaiacol to prepare KA oil and its derivatives

[0051] (1) Dissolve 0.15 g of boric acid, 5 g of urea, and 0.5 g of polyethylene glycol in 50 mL of water and disperse uniformly by ultrasonication, then add 0.068 g of nickel phthalocyanine, stir at room temperature for 1 hour, and then transfer the obtained solution to In an oven, dry at 100°C for 8 hours to obtain a solid mixture;

[0052] (2) Place the solid mixture obtained in step (1) in a tube furnace, raise the temperature from room temperature to 900°C at a rate of 5°C / min under an argon atmosphere, and calcinate at 900°C for 4 hours to obtain a catalyst carrier (The catalyst support is marked as NiNx@BCN);

[0053] (3) Take 20 mg of the catalyst carrier NiNx@BCN obtained in step (2) and 5 mg of chloroplatinic acid into 10 mL of deionized water, and ultrasonically mix the solution for 1 hour to obtain A solution; dissolve 8 mg of ...

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Abstract

The invention discloses a composite platinum nanoparticle and metal nitride material catalyst and its preparation method and application. The composite platinum nanoparticle and metal nitride material catalyst is composed of metal nitride coated in a carbon carrier and loaded on Composed of platinum nanoparticles on a carbon carrier, the carbon carrier is a carbon nanotube material doped with nitrogen and boron; the metal nitride is cobalt nitride, iron nitride, nickel nitride, manganese nitride or copper nitride . The composite platinum nanoparticle and metal nitride material catalyst used in the present invention, compared with the noble metal catalyst commonly used in the prior art, while ensuring good catalytic activity, reduces the amount of noble metal and greatly reduces the cost. At the same time, the catalyst is used in It has extremely strong stability in the reaction of producing KA oil or KA oil derivatives by electrocatalytic hydrogenation of lignin-based phenolic compounds.

Description

technical field [0001] The invention relates to a composite platinum nanoparticle and metal nitride material catalyst, a preparation method and application thereof. Background technique [0002] KA oil is the collective name of cyclohexanol and cyclohexanone, which is a key intermediate product in industrial production and is widely used in various industrial productions. Among them, cyclohexanol is a common industrial solvent and surfactant, and can also be used in the preparation of cyclohexanone and adipic acid. At the same time, cyclohexanone is also an important organic intermediate. For example, cyclohexanone can be used to prepare caprolactam and adipic acid, which are raw materials for nylon 66 and nylon 6, and can also be used for the synthesis of pesticides, dyes, and pharmaceutical intermediates. Therefore, in recent years, the production of KA oil has attracted more and more attention from researchers at home and abroad. [0003] Biomass energy is an important ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24C25B3/25C25B3/07C25B11/093
CPCB01J27/24C25B11/04C25B3/25B01J35/394B01J35/33
Inventor 钟兴谷雨王建国
Owner ZHEJIANG UNIV OF TECH
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