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Method for catalytically oxidizing benzyl alcohol based on phytic acid modified foamed nickel electrode

An electrocatalytic oxidation and nickel foam technology, which is applied in the field of electrocatalysis, can solve the problems of inability to obtain intermediate products, the catalytic efficiency needs to be improved, and the reaction time is long, and achieves the effects of high electrode conversion rate, simple method and low cost.

Pending Publication Date: 2021-12-31
NORTHWESTERN POLYTECHNICAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Compared with the traditional method, the current nickel-based electrode material BEOR still has the following problems: (1) The catalytic efficiency still needs to be improved, and the reaction time is longer; (2) To further improve the catalytic performance, complex modification methods such as micro , nanoscale material structure design, etc.; (3) most catalysts can only completely oxidize benzyl alcohol to benzoic acid, and cannot obtain intermediate products thereof, such as benzaldehyde and benzaldehyde benzyl ester, etc., and benzaldehyde is an important fine Chemical intermediate, industrial value is also higher than benzoic acid

Method used

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  • Method for catalytically oxidizing benzyl alcohol based on phytic acid modified foamed nickel electrode
  • Method for catalytically oxidizing benzyl alcohol based on phytic acid modified foamed nickel electrode
  • Method for catalytically oxidizing benzyl alcohol based on phytic acid modified foamed nickel electrode

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1: Soak 1cm×3cm×0.2cm nickel foam in 0.3mol / L salt and ultrasonically clean it for 20 minutes to remove the oxide layer and pollutants on the surface, and then perform ultrasonic oscillation treatment in ethanol, acetone and deionized water respectively. Remove excess hydrochloric acid on the surface to obtain pretreated nickel foam. Such as figure 1 As shown, the surface of the pretreated nickel foam is flat and smooth. Then the phytic acid aqueous solution that 73mL mass fraction is 2% is poured in the 100mL polytetrafluoroethylene hydrothermal reactor, and puts into the foamed nickel after the pretreatment, and the hydrothermal reactor is put into blast drying oven, at 120 ℃ under hydrothermal conditions for 10 h, and the reaction kettle was cooled to room temperature. The silvery nickel foam was taken out, washed repeatedly with deionized water and ethanol under ultrasound, and dried at 60 °C to obtain a phytic acid-modified nickel foam electrode (PA / NF). De...

Embodiment 2

[0030] Step 1: Soak 1cm×3cm×0.2cm nickel foam in 0.6mol / L hydrochloric acid and ultrasonically clean it for 20 minutes to remove the oxide layer and pollutants on the surface, and then perform ultrasonic oscillation treatment in ethanol, acetone and deionized water respectively. Remove excess hydrochloric acid on the surface to obtain pretreated nickel foam. Then the phytic acid aqueous solution that 74mL mass fraction is 2.7% is poured in the 100mL polytetrafluoroethylene hydrothermal reactor, and puts into the foamed nickel after the pretreatment, and the hydrothermal reactor is put into blast drying oven, at 150 ℃ under hydrothermal conditions for 12 h, and the reaction kettle was cooled to room temperature. The silvery nickel foam was taken out, washed repeatedly with deionized water and ethanol under ultrasound, and dried at 70°C to obtain a phytic acid-modified nickel foam electrode.

[0031] Step 2: Using a three-electrode system, the phytic acid-modified nickel foam e...

Embodiment 3

[0033] Step 1: Soak 1cm×3cm×0.2cm nickel foam in 0.6mol / L salt and ultrasonically clean it for 20 minutes to remove the oxide layer and pollutants on the surface, and then perform ultrasonic oscillation treatment in ethanol, acetone and deionized water respectively. Remove excess hydrochloric acid on the surface to obtain pretreated nickel foam. Then the phytic acid aqueous solution that 75mL mass fraction is 3.3% is poured in the 100mL polytetrafluoroethylene hydrothermal reactor, and puts into the foamed nickel after the pretreatment, and the hydrothermal reactor is put into blast drying oven, at 180 ℃ for 15 h under hydrothermal conditions, and the reaction kettle was cooled to room temperature. The silvery nickel foam was taken out, washed repeatedly with deionized water and ethanol under ultrasound, and dried at 80°C to obtain a phytic acid-modified nickel foam electrode.

[0034] Step 2: Using a three-electrode system, the phytic acid-modified nickel foam electrode obta...

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Abstract

The invention discloses a method for catalytically oxidizing benzyl alcohol based on a phytic acid modified foamed nickel electrode, the method comprises the following steps: firstly, soaking cleaned foamed nickel in a phytic acid aqueous solution, carrying out hydrothermal reaction at 100-180 DEG C for 10-15 hours to prepare the phytic acid modified foamed nickel electrode, and then realizing electro-catalytic oxidation of benzyl alcohol by using a three-electrode system and adopting a chronoamperometry. The phytic acid modified foam nickel electrode shows high catalytic activity and high selectivity for the benzyl alcohol oxidation reaction, and the preparation method is simple, low in cost and environmentally friendly, so that the method has extremely high potential commercial value.

Description

technical field [0001] The invention belongs to the technical field of electrocatalysis, and in particular relates to a method for catalytically oxidizing benzyl alcohol based on a phytic acid-modified foamed nickel electrode. Background technique [0002] The selective oxidation of benzyl alcohol is one of the most important problems in the modern chemical industry and synthetic chemistry, because the corresponding product benzaldehyde is an important raw material in the pharmaceutical, dye, fragrance and resin industries, and can also be used as a solvent, plasticizer and Low-temperature lubricants, etc., as important organic intermediates, are widely used in the synthesis of pharmaceuticals and fine chemicals. Compared with traditional thermochemical oxidation methods, benzyl alcohol electrochemical oxidation (BEOR) method has unique advantages, it can avoid the common problems of traditional methods, namely high temperature, high pressure, low conversion rate, long react...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/07C25B3/23C25B11/031C25B11/052C25B11/061C25B11/085
CPCC25B3/07C25B3/23C25B11/031C25B11/052C25B11/061C25B11/085
Inventor 李家源薛青禹高愿锋
Owner NORTHWESTERN POLYTECHNICAL UNIV
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