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Anti-high temperature sintered catalyst carrier materia, and preparing method and use thereof

A catalyst carrier and high temperature resistance technology, which is applied in the direction of catalyst carriers, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems that the surface catalyst is not easy to attach, SiC has poor oxidation resistance, etc., and achieves good chemical stability , Excellent anti-sintering performance at high temperature, and the effect of improving anti-sintering performance

Inactive Publication Date: 2009-04-22
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the oxidation resistance of SiC is not good, and it is easily oxidized to SiO in the environment above 800 °C and water vapor. 2 , and is sintered, and its surface is smooth, the catalyst is not easy to adhere

Method used

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  • Anti-high temperature sintered catalyst carrier materia, and preparing method and use thereof
  • Anti-high temperature sintered catalyst carrier materia, and preparing method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 0.5695g (1.75×10 -3 mol) of La 2 o 3 Concentrated HNO 3 Dissolved to get La(NO 3 ) 3 solution; the ZrOCl of 1.1278g 2 ·8H 2 O(3.50×10 -3 mol) was dissolved in deionized water and mixed with La(NO 3 ) 3 Mix the solutions to obtain solution (1); add 10 g of PVP or PVA to solution (1) and stir with an electromagnetic stirrer for 4 hours to obtain solution (2); evaporate solution (2) to dryness at 323K ~ 353K on a water bath, and then roast at 1273K The powder (3) was obtained at 12h. The specific surface of the powder (3) reaches 9.1m after 12h calcination at 1273K and 1673K 2 g -1 and 1.0m 2 g -1 .

Embodiment 2

[0026] 0.5695g (1.75×10 -3 mol) of La 2 o 3 Concentrated HNO 3 Dissolved to get La(NO 3 ) 3 Solution; 0.5632g (1.75×10 -3 mol) of ZrOCl 2 ·8H 2 O dissolved in deionized water to give ZrOCl 2 Solution; 0.8682g (1.75×10 -3 mol) of Ce(NO 3 ) 4 .6H 2 Dissolving O in water yields Ce(NO 3 ) 4 solution; the La(NO 3 ) 3 solution, ZrOCl 2 solution and Ce(NO 3 ) 4 Mix the solutions to obtain solution (1); add 10 g of PVP or PVA to solution (1) and stir with an electromagnetic stirrer for 4 hours to obtain solution (2); evaporate solution (2) to dryness on a water bath, and then roast at 1273K for 12 hours to obtain a powder (3). The specific surface of the powder (3) reaches 9.1m after 12h calcination at 1273K and 1673K 2 g -1 and 2.1m 2 g -1 .

Embodiment 3

[0028] The solution (2) is spun into fiber (4) by electrospinning technology, the fiber (4) is dried at 323K-353K for 12 hours, and then calcined at 1273K for 12 hours to obtain the fiber, the structure of which is shown in figure 2 . The specific surface of the fibers after 12h calcination at 1273K and 1673K can reach 9.0m 2 g -1 and 2.5m 2 g -1 . During the electrospinning process of the fiber (4), the diameter of the spinning hole is between 0.5 mm and 1.5 mm, the distance between the spinning hole and the spinning collecting plate is 100 mm to 300 mm, and the spinning hole and the spinning collecting plate are The electrostatic voltage between them is 10,000 volts to 50,000 volts, and the electrostatic voltage is generated by an electrostatic generator.

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Abstract

A high-temp sinter resistant carrier of the catalyst used for catalytic combustion of gas turbine and boiler has a chemical formula R2O3-BO2, where R is chosen from La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and B is chosen from Zr, Hf and Ce. Its preparing process is also disclosed.

Description

technical field [0001] The invention relates to a class of high-temperature catalyst carrier materials and belongs to the technical field of high-temperature catalytic combustion. Background technique [0002] With the increasing global demand for natural gas energy, the safe, efficient and low-pollution combustion technology of natural gas is very important. The combustion flame temperature of the fuel can reach above 1773K, at such a high temperature, the N in the air 2 easy to be O 2 Oxidation to NO x , Pollution to the environment. Catalytic combustion technology is a process in which fuel reacts with oxygen in the air under the action of a solid catalyst to release heat. Catalytic combustion can not only improve the energy efficiency of fuel and save energy, but also effectively reduce the combustion reaction temperature (usually down to 1473K ~ 1673K), reduce NO x emissions. As an environmentally friendly process, catalytic combustion not only has high energy uti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J23/10B01J21/06
Inventor 曹学强李佳艳钟兴华张彦飞代辉
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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