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A high temperature resistant oxygen carrier and its preparation and application

An oxygen carrier and high temperature resistant technology, which is applied in the application field of gel DT-3 propellant catalytic decomposition, can solve the problems that cannot fully meet the requirements of propellant safety and high efficiency, and achieve excellent oxygen storage and release capacity, The effect is simple and easy to produce

Active Publication Date: 2021-11-26
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

Solid propellants and liquid propellants have their own advantages and disadvantages and cannot fully meet the requirements for the safety and efficiency of propellants

Method used

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  • A high temperature resistant oxygen carrier and its preparation and application
  • A high temperature resistant oxygen carrier and its preparation and application
  • A high temperature resistant oxygen carrier and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The sol-gel method is used for the preparation of oxygen carriers, and the steps are as follows:

[0024] 1) Take 2.298g of yttrium nitrate hexahydrate, 0.808g of ferric nitrate nonahydrate, 3.001g of aluminum nitrate nonahydrate and 16.8g of citric acid (citric acid: total metal ion molar ratio = 5:1) into a beaker, add 100ml of Deionized water forms a mixed solution, and then ethylene glycol is added according to the molar ratio of ethylene glycol and citric acid being 1:1, and stirred for 4 hours.

[0025] 2) Put the solution obtained in step 1) into an 80°C water bath, stir and evaporate to dryness until a gel is formed, then dry in an oven at 80°C for 2 hours, and dry overnight at 120°C, grind to obtain a precursor, take an appropriate amount of precursor and put it in 900 Roasted in a tube furnace for 4h to obtain the oxygen carrier Y 3 FeAl 4 o 12 , XRD characterization results see figure 1 , indicating that the target product is determined to be a cubic phas...

Embodiment 2

[0027] 1) Take 2.298g of yttrium nitrate hexahydrate, 1.616g of iron nitrate nonahydrate, 2.2508g of aluminum nitrate nonahydrate and 16.8g of citric acid (citric acid:total metal ion molar ratio=5:1) into a beaker, add 100ml of Deionized water forms a mixed solution, and then ethylene glycol is added according to the molar ratio of ethylene glycol and citric acid being 1:1, and stirred for 4 hours.

[0028] 2) Put the solution obtained in step 1) into an 80°C water bath, stir and evaporate to dryness until a gel is formed, then dry in an oven at 80°C for 2 hours, and dry overnight at 120°C, grind to obtain a precursor, take an appropriate amount of precursor and put it in 900 Roasted in a tube furnace for 4h to obtain the oxygen carrier Y 3 Fe 2 al 3 o 12 , XRD characterization results see figure 1 , indicating that the target product was identified as a garnet structure.

Embodiment 3

[0030] 1) Take 2.298g of yttrium nitrate hexahydrate, 3.232g of ferric nitrate nonahydrate, 0.7502g of aluminum nitrate nonahydrate and 16.8g of citric acid (citric acid:total metal ion molar ratio=5:1) into a beaker, add 100ml of Deionized water forms a mixed solution, and then ethylene glycol is added according to the molar ratio of ethylene glycol and citric acid being 1:1, and stirred for 4 hours.

[0031] 2) Put the solution obtained in step 1) into an 80°C water bath, stir and evaporate to dryness until a gel is formed, then dry in an oven at 80°C for 2 hours, and dry overnight at 120°C, grind to obtain a precursor, take an appropriate amount of precursor and put it in 900 Roasted in a tube furnace for 4h to obtain the oxygen carrier Y 3 Fe 4 AlO 12 , XRD characterization results see figure 1 , indicating that the target product was identified as a garnet structure.

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Abstract

The present invention involves a new type of high -temperature -resistant oxygen carrier, preparation method and its application. The main component of the oxygen carrier is the garnet structure, and the chemical measurement ratio is Y 3 FE x AL 5‑x O 12 The range of X is 0 <x ≤5, and the theoretical storage capacity is 0‑10.15mmol / g.The oxygen carrier is specifically prepared by solitary gel law, and then obtained by high temperature roasting. It is first used in the actual methane chemical chain part of the oxidation synthetic gas test to show high activity and CO selectivity.Test performance is basically stable.Due to excellent oxygen storage capacity, Y in the present invention 3 FE x AL 5‑x O 12 The high temperature -resistant oxygen carrier is also suitable for catalytic decomposition of gel DT‑3 pushing agent, which can achieve stable ignition of the engine.The high -temperature oxygen load system is relatively simple, the material cost is low, the material is easy to produce, the performance is excellent, and the performance has good application potential.

Description

technical field [0001] The invention relates to a novel high-temperature-resistant oxygen carrier, a preparation method, and its application in the field of methane chemical chain transformation and the catalytic decomposition of gel DT-3 propellant. Background technique [0002] The new high-temperature-resistant oxygen carrier not only has an important application background in the aerospace field under extreme conditions, but also has a good development prospect in the direction of high-temperature conversion and utilization of methane. [0003] As the main component of shale gas and natural gas, methane is an important fossil energy and industrial raw material. In recent years, with the shale gas revolution and the development of natural gas exploration technology, methane will occupy a more important position in the future energy consumption pattern , so the conversion and utilization of methane has been widely concerned by researchers. [0004] In the chemical industr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G49/00B01J23/83B82Y40/00C01B3/40C06D5/04
CPCB01J23/002B01J23/83B01J2523/00B82Y40/00C01B3/40C01B2203/0261C01B2203/1047C01B2203/1082C01B2203/1241C01G49/0054C01G49/009C01P2002/72C01P2004/62C01P2004/64C06D5/04B01J2523/31B01J2523/36B01J2523/842Y02P20/52
Inventor 王晓东康雨田鸣吕飞夏连根李涛
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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