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High-performance zirconium cerium titanium solid-solution catalyst for flue gas denitration and preparation method thereof

A solid solution, zirconium cerium titanium technology, applied in heterogeneous catalyst chemical elements, physical/chemical process catalysts, gas treatment, etc., can solve the problems of small specific surface area, poor mechanical strength, etc., and achieve high denitrification performance and thermal stability Good, good water and sulfur resistance

Inactive Publication Date: 2016-06-22
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anatase TiO in this catalyst 2 There are also some problems in the use of the carrier, such as poor mechanical strength, small specific surface area, and easy crystallization into rutile TiO at high temperature. 2 Wait

Method used

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  • High-performance zirconium cerium titanium solid-solution catalyst for flue gas denitration and preparation method thereof
  • High-performance zirconium cerium titanium solid-solution catalyst for flue gas denitration and preparation method thereof
  • High-performance zirconium cerium titanium solid-solution catalyst for flue gas denitration and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1. Zr 0.02 Ce 0.08 Ti 0.9 o 2 Preparation of solid solution catalyst

[0020] Dissolve 0.07g of zirconium nitrate, 0.36g of cerium nitrate and 3.62g of titanium sulfate in 200mL of distilled water, stir magnetically at room temperature for 30min to mix evenly, then add concentrated ammonia water drop by drop, adjust the pH value to 10, at 90 o Magnetic stirring in C water bath for 3h to make the precipitation complete, aging for 24h, suction filtration, washing, filter cake at 110 o C dried for 12h, ground evenly, in the air atmosphere in the muffle furnace at 550 o C is roasted for 5h to get Zr 0.02 Ce 0.08 Ti 0.9 o 2 solid solution catalyst. Its XRD measurement result sees figure 1 , H 2 -TPR results see figure 2 , the denitrification performance test results are shown in image 3 .

Embodiment 2

[0021] Example 2. Zr 0.03 Ce 0.07 Ti 0.9 o 2 Preparation of solid solution catalyst

[0022] Dissolve 0.11g of zirconium nitrate, 0.33g of cerium nitrate and 3.62g of titanium sulfate in 200mL of distilled water, stir magnetically at room temperature for 30min to mix evenly, then add concentrated ammonia water drop by drop, adjust the pH value to 10, at 90 o Magnetic stirring in C water bath for 3h to make the precipitation complete, aging for 24h, suction filtration, washing, filter cake at 110 o C dried for 12h, ground evenly, in the air atmosphere in the muffle furnace at 550 o C is roasted for 5h to get Zr 0.03 Ce 0.07 Ti 0.9 o 2 solid solution catalyst. Its XRD measurement result sees figure 1 , H 2 -TPR results see figure 2 , the denitrification performance test results are shown in image 3 , at 350 o The results of water and sulfur resistance of C are shown in Figure 4 .

Embodiment 3

[0023] Example 3. Zr 0.05 Ce 0.05 Ti 0.9 o 2 Preparation of solid solution catalyst

[0024] Dissolve 0.21g of zirconium nitrate, 0.22g of cerium nitrate and 3.62g of titanium sulfate in 200mL of distilled water, stir magnetically at room temperature for 30min to mix evenly, then add concentrated ammonia water drop by drop, adjust the pH value to 10, at 90 o Magnetic stirring in C water bath for 3h to make the precipitation complete, aging for 24h, suction filtration, washing, filter cake at 110 o C dried for 12h, ground evenly, in the air atmosphere in the muffle furnace at 550 o C is roasted for 5h to get Zr 0.05 Ce 0.05 Ti 0.9 o 2 solid solution catalyst. Its XRD measurement result sees figure 1 , H 2-TPR results see figure 2 , the denitrification performance test results are shown in image 3 .

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Abstract

The invention provides a zirconium cerium titanium solid-solution catalyst. The main component of the zirconium cerium titanium solid-solution catalyst is an anatase type titanium zirconium cerium titanium solid solution. The zirconium cerium titanium solid-solution catalyst has the advantages of high heat stability, excellent reduction performance and the like, has higher activity and selectivity in NH3 selective catalytic NO-reducing reaction, excellent water and sulfur resistance properties and has a potential application value in the field of denitration. The invention discloses a preparation method of the zirconium cerium titanium solid-solution catalyst.

Description

technical field [0001] The invention relates to a zirconium-titanium-cerium solid solution catalyst for flue gas denitrification and a preparation method thereof. Background technique [0002] The rapid development of industry requires huge energy consumption. Under the energy structure dominated by coal in my country, the smoke emitted by coal combustion has caused serious pollution to the environment, and the environmental pollution caused by nitrogen oxides (NOx) is particularly serious. , its governance is urgent. In NOx emission control technology, NH 3 Selective catalytic reduction of NOx technology for reducing agent (i.e. NH 3 -SCR technology), is the most effective method for flue gas denitrification in coal-fired power plants. [0003] Currently, NH for industrial applications 3 -SCR catalyst is mainly V 2 o 5 -WO 3 (MoO 3 ) / TiO 2 Catalyst, the catalyst is characterized in that the NOx removal efficiency in coal-fired boiler power plants is above 80%, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10B01D53/86B01D53/56
CPCB01J23/10B01D53/8628B01D2251/2062B01D2258/0283B01J23/002B01J2523/00B01J2523/3712B01J2523/47B01J2523/48
Inventor 齐蕾武笑颖汤琦
Owner UNIV OF JINAN
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