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Anode preparation method for producing solid oxide fuel cell of acrylic acid

A solid oxide and fuel cell technology, applied in solid electrolyte fuel cells, fuel cell parts, fuel cells, etc., can solve the problems of reaction heat release waste, heat management difficulties, explosions, etc., to achieve high selectivity, reaction The effect of low temperature

Inactive Publication Date: 2013-06-05
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this reaction is a strongly exothermic reaction, the thermal management is difficult, the hot spot problem is prominent, and a large amount of reaction exotherm is wasted
Furthermore, the mixture of propane and oxygen presents an explosion hazard.

Method used

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  • Anode preparation method for producing solid oxide fuel cell of acrylic acid
  • Anode preparation method for producing solid oxide fuel cell of acrylic acid
  • Anode preparation method for producing solid oxide fuel cell of acrylic acid

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Ammonium paramolybdate, vanadyl sulfate, telluric acid, and niobium oxalate are used as raw materials. Preparation of MoV by Hydrothermal Synthesis 0.3 Te 0.17 Nb 0.12 O, Mo, V, Te, Nb element molar ratio: 1:0.3:0.17:0.12. Firstly, ammonium paramolybdate, vanadyl tellurate sulfate, telluric acid and niobium oxalate are dissolved in water, heated to 60-90°C to dissolve completely. Stir for 5-10 minutes, transfer to a reaction kettle, and blow nitrogen into it for 5-20 minutes. The reactor is heated to 100-200°C and kept for 10-48 hours. The obtained mud is filtered, dried, and firstly mixed in volume ratio O 2 / He=(0-0.5): Roasting under (0-50) atmosphere for 1-5 hours, temperature 270°C-450°C, heating and cooling rate 1-5°C / min. After cooling down, at the molar ratio H 2 O:O 2 =0-12: Calcined in an atmosphere of 0-3 for 0.5-10 hours, the calcined temperature is 500-800°C, and the heating and cooling rate is 1-5°C / min. XRD diagram see image 3 . Obtained MoV ...

Embodiment 2

[0031] Ammonium paramolybdate, vanadyl sulfate, antimony oxide, and niobium oxalate are used as raw materials. Preparation of MoV by solid-phase method 0.3 Te 0.17 Nb 0.12 O, Mo, V, Te, Nb element molar ratio: 1:0.3:0.17:0.12. First, mix ammonium paramolybdate, vanadyl tellurate sulfate, antimony oxide, and niobium oxalate and grind them in a mortar for 5 hours. Screen the powder with particles smaller than 200 mesh, first in the volume ratio O 2 / He=0-0.5: calcination under 0-50 atmosphere for 1-5 hours, temperature 270°C-450°C, heating and cooling rate 1-5°C / min. After cooling down, at the molar ratio H 2 O / O 2 =0-12: Calcined in an atmosphere of 0-3 for 0.5-10 hours, the calcined temperature is 500-800°C, and the heating and cooling rate is 1-5°C / min. Obtained MoV 0.3 Te 0.17 Nb 0.12 The conductivity of the O material is 8.7 S / cm at 420°C.

Embodiment 3

[0033] Bi 4 Cu 0.2 V 1.8 o 11-δ The electrolyte membrane was prepared by solid phase method. Bi 2 o 3 , V 2 o 5 Grind with CuO for 1-6 hours, bake at 500-800°C for 12-36 hours, and heat up and down at a rate of 5-20°C per minute to obtain Bi 4 Cu 0.2 V1.8 o 11-δ Powder. Sieve the powder, press the powder with less than 200 mesh under the pressure of 100-300MPa into flakes, bake at 700-850°C for 1-5 hours, and heat up and down at a rate of 3-5°C per minute to obtain Bi 4 Cu 0.2 V 1.8 o 11-δ Diaphragm. Grind the diaphragm to a thickness of 0.3-0.6 mm and use it as an electrolyte membrane.

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Abstract

The invention relates to an anode preparation method for producing a solid oxide fuel cell of acrylic acid. Electrolyte of the cell is Bi4Cu0.2V1.8O11-delta, and cathode materials are Ag-Bi4Cu0.2V1.8O11-delta with the weight ratio: Ag:Bi4Cu0.2V1.8O11-delta =(0.5-1):(0.2-1); anode materials adopted by the cell are Mo-V-Te(Sb)-Nb-O and concretely comprise Mo element and at least one element of V, Te, Sb and Nb; and the mol ratio among Mo, V, Te, Sb and Nb is 1:(0-0.5):(0-0.4):(0-0.3):(0-0.3). The invention has the advantages of high reaction conversion rate, low reaction temperature and high selectivity, always keeps the selectivity of the acrylic acid at about 72.8 percent, and can simultaneously produce power and the acrylic acid.

Description

technical field [0001] The invention relates to solid oxide fuel cell technology, and in particular provides an anode preparation method of a solid oxide fuel cell for producing acrylic acid. Background technique [0002] The solid oxide fuel cell has a wide range of fuel sources, but due to the limitation of the anode material of the battery, the combustion products of the fuel are mainly water and carbon dioxide. The development of an anode material that can catalytically convert hydrocarbons so that the combustion products of fuels are high-value chemicals is a topic of great significance. [0003] Acrolein, acrylic acid and its ester series products are widely used in paint, chemical fiber, textile, light industry and other industries, as well as oil exploration and oil additives. There are many process routes for producing acrolein, acrylic acid and their esters, and now the industry is mainly based on the oxidation of propylene. However, the cost of propylene is rela...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/10H01M8/02H01M4/88H01M4/86H01M8/1007H01M8/1016
CPCY02E60/521Y02E60/50
Inventor 杨维慎计宝峰汪纪波林励吾
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI