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Nitrogen/sulphur/chlorine co-doped multistage hole carbon catalyst and preparation method thereof

A carbon catalyst and co-doping technology, which can be used in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. Harsh and other problems, to achieve the effect of increased yield, simple preparation method, and improved stability

Inactive Publication Date: 2015-12-16
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, according to reports, nitrogen-doped mesoporous carbon catalysts prepared by the hard template method have good electrochemical performance in alkaline media. However, this type of catalyst has complex preparation methods, harsh conditions, low yield, and is not suitable for industrial production. Defects, whether in electrochemical performance or stability, etc., still need to be improved [Appl.Catal.B: Environ.127, 300(2012)]

Method used

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  • Nitrogen/sulphur/chlorine co-doped multistage hole carbon catalyst and preparation method thereof
  • Nitrogen/sulphur/chlorine co-doped multistage hole carbon catalyst and preparation method thereof
  • Nitrogen/sulphur/chlorine co-doped multistage hole carbon catalyst and preparation method thereof

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Embodiment 1

[0037] A nitrogen / sulfur / chlorine co-doped hierarchical porous carbon catalyst obtained by processing a precursor, the precursor comprising 39.6% by mass of silicon dioxide powders with different particle sizes and 21.6% by mass Nitrogen-containing and chlorine-containing high polymer [polyquaternized (bis(2-chloroethyl) ether-alt-1,3-bis[3-(dimethylamino)propyl]urea, referred to as: PQ-2, Sigmaaldrich company] and mass content are the transition metal salt ferrous sulfate of 38.8%.Above-mentioned mass content is based on the total mass of precursor.Described processing comprises roasting reduction treatment for the first time, alkali cleaning treatment, pickling treatment and The second roasting reduction treatment.

[0038] The preparation of the nitrogen / sulfur / chlorine co-doped hierarchical porous carbon catalyst is: PQ-2, the particle size is 15nm, 100nm, 500nm silicon dioxide powder and FeSO4 7H 2 O is configured with 1 mole per liter of hydrochloric acid to form a PQ-2...

Embodiment 2

[0041] A nitrogen / sulfur / chlorine co-doped hierarchical porous carbon catalyst obtained by processing a precursor, the precursor comprising a mass content of 39.6% and a particle size of 500nm silicon dioxide powder, a mass content of 21.6% % nitrogen-containing, chlorine-containing high polymer [polymer of chlorinated-1-vinyl-3-methyl-1H-imidazole and 1-vinyl-2-pyrrolidone, referred to as: LFC, Sigmaaldrich company] and mass content 38.8 % transition metal salt ferrous sulfate. The above mass content is based on the total mass of the precursor. The treatment includes the first roasting reduction treatment, alkali washing treatment, pickling treatment and the second roasting reduction treatment.

[0042] The preparation of the nitrogen / sulfur / chlorine co-doped hierarchical porous carbon catalyst is as follows: LFC, silica powder and FeSO 4 ·7H 2 O is respectively configured with 1 mole per liter of hydrochloric acid to form LFC solution with mass fraction of 5%, SiO with 14...

Embodiment 3

[0045] A nitrogen / sulfur / chlorine co-doped hierarchical porous carbon catalyst obtained by processing a precursor, the precursor comprising 39.6% by mass content and a diameter of 500nm silicon dioxide powder, with a mass content of 21.6% The nitrogen-containing, chlorine high polymer [poly(diallyl dimethyl ammonium chloride, referred to as: PDC, Sigmaaldrich company)] and the transition metal salt ferrous sulfate with a mass content of 38.8%. The above mass content is based on the total mass of the precursor. The treatment includes the first roasting reduction treatment, alkali washing treatment, pickling treatment and the second roasting reduction treatment.

[0046] The preparation of the nitrogen-sulfur / chlorine co-doped hierarchical porous carbon catalyst is as follows: PDC with a particle size of 500nm silica powder and FeSO 4 ·7H 2 O is respectively configured with 1 mole per liter of hydrochloric acid to form 5% PDC solution and 14% SiO 2 solution and 30% ferrous su...

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Abstract

The invention provides a nitrogen / sulphur / chlorine co-doped multistage hole carbon catalyst and a preparation method thereof. The nitrogen / sulphur / chlorine co-doped multistage hole carbon catalyst is characterized by being prepared by treating a precursor, wherein the precursor comprises the raw materials: 10-60wt% of a template agent, 10-80wt% of a nitrogen / chlorine containing high polymer, and 5-50wt% of a transition metal salt, and the weight content is based on the total weight of the precursor; the treatment comprises calcination reduction treatment, alkali washing treatment, acid washing treatment and secondary calcination reduction treatment. The preparation method has the characteristics of being simple, easy to operate, low in cost, high in yield and the like; the dependence on noble metal Pt is greatly reduced; a corrosion problem caused by use of a non-noble metal catalyst is overcome; the nitrogen / sulphur / chlorine co-doped multistage hole carbon catalyst has the wide application prospects in fields of acid and alkaline fuel cells, metal-air cells, supercapacitors, CO2 electroreduction, environment waste water treatment and the like.

Description

technical field [0001] The invention belongs to the field of doped carbon catalyst and its preparation and application, in particular to a high specific surface area nitrogen / sulfur / chlorine co-doped hierarchical porous carbon catalyst and a preparation method thereof. Background technique [0002] In the context of the reduction of global oil and coal reserves and the increasingly serious environmental pollution, fuel cells have become the most promising new generation power source due to their advantages of high efficiency and cleanliness. At present, the reason for restricting the large-scale application of fuel cells is mainly that the effective catalysts of the anode and cathode are noble metal catalysts based on platinum (Pt) metals, and their high price and lack of resources seriously restrict their commercial scale application. [0003] In recent years, researchers have devoted themselves to the study of non-precious metal catalysts in order to fundamentally solve th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02B01J31/28H01M4/90
CPCY02E60/50
Inventor 乔锦丽武明杰
Owner DONGHUA UNIV
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