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Method for producing hydrogen peroxide by self-doping bismuth tungstate

A natural drying and H2O2 technology, applied in the field of green chemistry, can solve the problems of poor durability and unsuitable AOPs, etc., and achieve the effect of reducing costs and high efficiency

Pending Publication Date: 2022-01-28
TIANJIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

But since VO 4 3- Dissolution of anions, BiVO 4 High overpotential (~400mV), poor durability, not suitable for AOPs that need to last for a period of time

Method used

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  • Method for producing hydrogen peroxide by self-doping bismuth tungstate
  • Method for producing hydrogen peroxide by self-doping bismuth tungstate
  • Method for producing hydrogen peroxide by self-doping bismuth tungstate

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Embodiment Construction

[0019] Preparation BI 2.15 WO 6 The process is as follows:

[0020] The sodium nitrate solution dissolved in a 1M nitrate solution with a 1M sodium hydroxide solution was uniformly stirred in the proportion of Bi: W = 2.15: 1, and was completely uniform and placed in an oven at 180 ° C in an oven. The reaction was 24 h, and the obtained solid washed, dried, and ground after cooling to obtain the above solid BI. 2.15 WO 6 After using the agate mortar to grind into a uniform powder, put it into the drying tank to be used, XRD analysis of the prepared sample, the result is figure 1 Indicated.

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Abstract

The invention relates to a method for producing hydrogen peroxide (H2O2) by self-doping bismuth tungstate (Bi2.15WO6), and relates to the field of green chemistry. The method comprises the steps of S1, mixing a prepared Bi2.15WO6 solid and a binder in equal proportion, carrying out ultrasonic treatment to obtain a uniform suspension, uniformly coating the surface of conductive glass with the suspension, and naturally airing; S2, taking the dried Bi2.15WO6 electrode and the Pt electrode as positive and negative electrodes, and connecting the positive and negative electrodes with a constant-voltage direct-current power supply; and S3, sampling and detecting H2O2 per hour. The invention discloses a method for efficiently producing H2O2 through Bi2. 15WO6 electro-catalysis.

Description

Technical field [0001] The present invention relates to the field of green chemistry, in particular, to a use of BI 2.15 WO 6 Electrode fluid to generate H 2 O 2 Methods. Background technique [0002] Hydrogen peroxide (H 2 O 2 ) Is a colorless and tasteless transparent liquid, unstable, very easy to decompose into h 2 O and O 2 . Hide 2 O 2 It has strong oxidation and is an environmentally friendly and economical oxidant. Hide 2 O 2 As an important chemical is widely used in decolorizing bleaching (textile treatment), chemical synthesis (such as propylene epoxidation), sterilization disinfection (food packaging), mining mining (such as flotation metal), military and aerospace The fields are listed as one of the 100 most important chemicals in the world. As of 2018, global h 2 O 2 The consumption is approximately 6.5 million tons, and this value has been rapidly increased, and the domestic market share exceeds 50%. [0003] Electrochemical synthesis is considered to be a very pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/30C25B9/65C25B11/077B01J23/31B01J35/02B01J35/00
CPCC25B1/30C25B11/077C25B9/65B01J23/31B01J35/00B01J35/30B01J35/33
Inventor 刘勇刘天宇
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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