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A kind of fe@sio 2 Catalyst and its preparation method and application

A catalyst, sodium hydroxide technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve unstable electrode catalytic performance, low output voltage, device The problem of high cost is to achieve high electrocatalytic performance and chemical stability, low operating cost, and large specific surface area.

Active Publication Date: 2022-05-24
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the operation of microbial fuel cells, the output voltage of the air cathode single chamber is low, the output power is low, the unstable electrode catalytic performance, and the cost of the device are too high. reactivity

Method used

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  • A kind of fe@sio <sub>2</sub> Catalyst and its preparation method and application
  • A kind of fe@sio <sub>2</sub> Catalyst and its preparation method and application
  • A kind of fe@sio <sub>2</sub> Catalyst and its preparation method and application

Examples

Experimental program
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Embodiment 1

[0033] One embodiment of the present invention Fe@SiO2 catalyst, the microbial fuel cell reactor as described in the present embodiment Figure 1 As shown, the present embodiment Fe@SiO2 the preparation process of the catalyst, comprising the following steps:

[0034] (1) 2-Aminoterephthalic acid, ferric chloride hexahydrate and N, N-dimethylformamide, stirred evenly at 20-30 °C to give a first mixture; wherein 2-aminoterephthalic acid, ferric chloride hexahydrate and N, N-dimethylformamide mass ratio is: 2-aminoterephthalic acid: ferric chloride hexahydrate: N, N-dimethylformamide = 1: 1: 272;

[0035] (2) The first mixture in step (1) was kept in heat at 140 °C for 12 h to give a dark brown mixture;

[0036] (3) Add N, N-dimethylformamide to the dark brown mixture in step (2), stir to wash, centrifuge and filter, at 70 °C, vacuum drying for 12h to give the first solid object;

[0037] (4) The first solid object obtained in step (3) with sodium hydroxide solution, cetyltrimethylam...

Embodiment 2

[0041] One embodiment of the present invention Fe@SiO2 catalyst, the microbial fuel cell reactor as described in the present embodiment Figure 1 As shown, the present embodiment Fe@SiO2 the preparation process of the catalyst, comprising the following steps:

[0042] (1) 2-Aminoterephthalic acid, ferric chloride hexahydrate and N,N-dimethylformamide, stirred evenly at 20-30 °C to give a first mixture; wherein 2-aminoterephthalic acid, ferric chloride hexahydrate and N, N-dimethylformamide mass ratio is: 2-aminoterephthalic acid: ferric chloride hexahydrate: N, N-dimethylformamide = 1: 1.49: 272.13;

[0043] (2) The first mixture in step (1) was kept in place at 150 °C for 18h to give a dark brown mixture;

[0044] (3) Add N, N- dimethylformamide to the dark brown mixture in step (2), stir to wash, centrifuge and filter, at 80 °C, vacuum drying for 18h to obtain the first solid object;

[0045] (4) The first solid object obtained in step (3) with sodium hydroxide solution, cetyltri...

Embodiment 3

[0049]One embodiment of the present invention Fe@SiO2 catalyst, the microbial fuel cell reactor as described in the present embodiment Figure 1 As shown, the present embodiment Fe@SiO2 the preparation process of the catalyst, comprising the following steps:

[0050] (1) 2-Aminoterephthalic acid, ferric chloride hexahydrate and N, N-dimethylformamide, stirred evenly at 20-30 °C to give a first mixture; wherein 2-aminoterephthalic acid, ferric chloride hexahydrate and N, N-dimethylformamide mass ratio is: 2-aminoterephthalic acid: ferric chloride hexahydrate: N, N- dimethylformamide = 1: 2: 273;

[0051] (2) The first mixture in step (1) was kept in place at 160 °C for 24h to give a dark brown mixture;

[0052] (3) Add N, N-dimethylformamide to the dark brown mixture in step (2), stir to wash, centrifuge and filter, at 90 °C, dry for 24h to give the first solid object;

[0053] (4) The first solid object obtained in step (3) with sodium hydroxide solution, cetyltrimethylammonium bro...

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Abstract

The invention discloses a Fe@SiO 2 The preparation method of catalyst comprises the steps of: mixing 2-aminoterephthalic acid, ferric chloride hexahydrate and N,N-dimethylformamide according to a certain mass ratio to obtain the first mixed liquid; solution at 140-160°C, heat preservation to obtain a dark brown mixture; add N,N-dimethylformamide to the dark brown mixture, stir and wash, centrifugal filter, and vacuum dry to obtain the first solid object; the above first solid Object, sodium hydroxide solution, cetyltrimethylammonium bromide, tetraethyl orthosilicate, methanol and water are (10‑40): (6‑10): (2‑8): ( 0.4-1.6): (2-8): (150-250) mix uniformly to obtain the second mixed solution; add ethanol to the second mixed solution, stir and wash, centrifuge and vacuum dry to obtain the second solid object; Two solid objects were fired at a high temperature of 700-900°C for 1-5h, passed through an inert gas, and stood in a sodium hydroxide solution for 12-24h to obtain Fe@SiO 2 catalyst.

Description

Technical field [0001] The present invention relates to a field of catalyst technology, in particular a Fe@SiO 2 Catalyst and preparation method and application thereof. Background [0002] Since modern times, due to people's large consumption of fossil fuels, the problem of environmental pollution has become increasingly serious. With the growing awareness of current energy issues and environmental protection, high-performance energy conversion and storage devices are rapidly being developed. As an ideal device to solve the energy crisis and environmental problems, microbial fuel cells (MFCs) can obtain electrical energy by degrading substrates by microorganisms, which are inexhaustible, environmentally friendly and do not cause pollution. Therefore, it has attracted widespread attention in basic research and practical applications. [0003] In the process of microbial fuel cell operation, microorganisms on the anode consume organic matter in the electrolyte to produce electrons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J35/10H01M4/90H01G11/30H01G11/24
CPCB01J23/745B01J35/1004B01J35/0033H01M4/9041H01M4/9075H01G11/24H01G11/30Y02E60/50
Inventor 张鸿郭万奎麟戴熠王燕施辉辉唐进峰阎佳肖唐付
Owner GUANGZHOU UNIVERSITY
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