Non-noble metal catalyst used for catalytic combustion of PTA exhaust gas and preparation method thereof

A catalytic combustion, non-precious metal technology, applied in the direction of catalyst activation/preparation, combustion method, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problems of high cost, poor toxicity resistance, etc. Good toxicity and high catalytic activity

Active Publication Date: 2015-04-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a non-precious metal monolithic catalyst for catalytic combustion of PTA tail gas and a preparation method for the problems of high cost and poor toxicity resistance of noble metal catalysts currently used for industrial waste gas treatment. The prepared catalyst has raw materials Low cost, simple preparation process, high catalytic activity, good anti-toxicity, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Measure 2 L of 0.25mol / L cerium nitrate solution, add dropwise 0.25mol / L sodium carbonate solution to the solution while stirring until the pH value is 8, continue stirring for 0.5h, age for 12h, and then suction filter, Wash with deionized water until the pH of the filtrate becomes neutral, then dry at 100 °C for 8 h, and bake at 500 °C for 5 h to obtain the coated CeO 2 . Measure 30mL of 0.5mol / L copper nitrate solution, 150mL of 0.5mol / L manganese nitrate solution and 420mL of deionized water to make a mixed solution. 96.615gCeO 2 Add it to the soaking solution, stir and soak for 2 h. Then transferred to an oven to dry at 100 °C for 10 h, and finally calcined at 500 °C for 5 h to prepare CuMn / CeO with a loading capacity of 5%. 2 catalyst. Weigh 100g of catalyst powder and put it into a ball mill tank, add 400g of water ball mill for 2 h to make a coating solution, the solid content in the coating solution is 20%. The solution is an aqueous solution or a suspensi...

Embodiment 2

[0032] Measure 1 L of 0.5 mol / L cerium nitrate solution, add dropwise 0.5 mol / L ammonium carbonate solution to the solution while stirring, add dropwise until the pH value is 10, continue stirring for 3 hours, age for 48 hours, then suction filter, use Wash with deionized water until the pH of the filtrate becomes neutral, then dry at 120 °C for 20 h, and bake at 700 °C for 2 h to obtain the coated CeO 2 . Measure 500mL of 0.5mol / L copper sulfate solution, 500mL of 0.5mol / L manganese sulfate solution and 1L of deionized water to make a mixed solution. 89.25gCeO 2 Add to the soaking liquid, stirring and soaking for 12h. Then transferred to an oven to dry at 120 °C for 20 h, and finally calcined at 700 °C for 2 h to prepare CuMn / CeO with a loading capacity of 25%. 2 catalyst. Weigh 200g of catalyst powder and put it into a ball mill tank, add 300g of water ball mill for 2 h to make a coating solution, the solid content of the coating solution is 40%.

[0033] Honeycomb cera...

Embodiment 3

[0036] Measure 1L of 0.5mol / L cerium nitrate solution, add dropwise 0.5mol / L ammonium bicarbonate solution to the solution while stirring, dropwise add to pH value of 9, continue stirring for 2h, age for 24h, then suction filter, use Wash with deionized water until the pH of the filtrate becomes neutral, then dry at 110 °C for 12 h, and bake at 600 °C for 3 h to obtain the coated CeO 2 . Measure 100mL of 0.5mol / L copper acetate solution, 700mL of 0.5mol / L manganese acetate solution and 1.2L of deionized water to make a mixed solution. 127.217gCeO 2 Add to the impregnating solution, stirring and impregnating for 10h. Then transferred to an oven to dry at 110 °C for 12 h, and finally calcined at 600 °C for 3 h to prepare CuMn / CeO with a loading capacity of 15%. 2 catalyst. Weigh 150g of catalyst powder and put it into a ball mill tank, add 350g of water ball mill for 2 h to make a coating solution, the solid content in the coating solution is 30%. 300~600mL of 0.5mol / L mang...

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Abstract

The invention relates to a non-noble metal catalyst used for catalytic combustion of a PTA exhaust gas. The catalyst is prepared by mixing CuO, MnO2 and CeO2 oxide composite particles, uniformly dispersing, and loading on honeycomb ceramic, wherein CuO, MnO2 and CeO2 are in such weight parts that a ratio of amount of substance of copper and manganese is 1 : 1 to 1 : 7, and a ratio of a total mass of the CuO and the MnO2 and a mass of the CeO2 is 1 : 3 to 1 : 19. The catalyst uses honeycomb ceramic as base, an oxygen storage material CeO2 as a coating, and non-noble metals Cu and Mn as active components. The catalyst prepared by the invention has characteristics of low raw material cost, simple preparation technology, high catalytic activity and good toxin immunity, and can realize high-efficient catalytic combustion removal for PTA exhaust gas and other industrial exhaust gas.

Description

technical field [0001] The invention relates to a non-precious metal monolithic catalyst for catalytic combustion of PTA tail gas and a preparation method thereof, belonging to the technical field of catalytic combustion environmental protection. Background technique [0002] Organic waste gas is a common pollutant discharged by the petrochemical industry. Organic waste gas often contains hydrocarbon compounds, oxygen-containing organic compounds, nitrogen, sulfur, halogen and phosphorus-containing organic compounds. If these exhaust gases are not treated, they will be directly discharged into the atmosphere, which will cause serious pollution to the environment and endanger human health. PTA oxidation reaction tail gas is the largest amount of harmful gas discharged from the PTA plant, and the total mass concentration of organic matter exceeds 1000 mg / m 3 , the mass concentration of bromide is about 100 mg / m 3 , the mass concentration of CO is about 5000 mg / m 3 , and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889B01J37/02F23G7/07
Inventor 李维新管国锋万辉沈品德丁家海王建平谢宏雷张增建
Owner CHINA PETROLEUM & CHEM CORP
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