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Pd/MIL-53(Al) catalyst, preparation and application thereof

A catalyst and reaction kettle technology, applied in the field of Pd/MIL-53 catalyst and its preparation, can solve the problems of many influencing factors, complex process flow, limited industrial production and application, etc. The effect of temperature on the complete catalytic conversion of CO

Inactive Publication Date: 2015-03-25
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process is relatively complicated and there are many influencing factors, which limit its application in industrial production.

Method used

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  • Pd/MIL-53(Al) catalyst, preparation and application thereof
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  • Pd/MIL-53(Al) catalyst, preparation and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The evaluation method of embodiment 1 catalyst activity

[0028] The catalytic activity of the catalyst synthesized by the present invention to the CO oxidation reaction in the FCC regeneration flue gas was evaluated by using an atmospheric fixed bed microreactor laboratory evaluation device. The reactor adopts a quartz tube with an inner diameter of 6mm, and the automatic temperature controller controls the programmed temperature rise reaction, and the temperature rise rate is 5°C / min. Weigh 100mg of the catalyst, fill it in the constant temperature section of the reaction tube, prepare the reaction gas in advance according to the requirements, the gas composition is: CO: 1v%, O 2 : 21v%, Ar is the balance gas; the gas flow rate is 50ml / min. The experimental results were detected by the SP-3420 gas chromatograph produced by Beijing Analytical Instrument Factory. The FID hydrogen flame ion detector, the FID and the methane converter are connected in series, and the chr...

Embodiment 2

[0029] The preparation method of embodiment 2Pd / MIL-53 (Al)

[0030] Weigh H separately 2 BDC (2.88g), Al (NO 3 ) 3 9H 2 O (14.5g) was put into a 100mL reaction kettle, deionized water (65mL) was added, and stirred for 30 minutes. The reaction kettle was sealed and placed in an oven, and reacted at a constant temperature of 220°C for 72 hours, with a heating rate of 1°C per minute. Cool naturally to room temperature, filter with deionized water, and dry at 50°C for 12 hours to obtain MIL-53(Al). MIL-53(Al) was calcined at 330°C for 72 hours to remove water molecules and excess ligands in the framework, and palladium nitrate (0.5g) was added to obtain a mixed solution by equal volume impregnation, and dried at 50 for 12 hours. Pass Ar / H at 250°C 2 (0.1L / min) Reductive activation of Pd / MIL-53(Al), the heating rate is 3°C per minute.

[0031] activity evaluation

[0032] Pd / MIL-53 (Pd) is evaluated according to the evaluation method of above-mentioned catalyst activity, w...

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Abstract

The invention relates to a Pd / MIL-53(Al) catalyst, preparation and application thereof. The preparation method includes: letting terephthalic acid, aluminum nitrate and deionized water in a mass ratio of 1:5:20-30 react, conducting natural cooling to room temperature, and carrying out filtering and drying to obtain MIL-53(Al); and performing roasting to obtain a high specific surface area carrier, adding palladium nitrate, and conducting equivalent-volume impregnation to obtain a mixed solution, carrying out drying, and introducing Ar / H2 (0.1-0.2L / min) to conduct reduction activation so as to obtain the Pd / MIL-53(Al) catalyst. The loading capacity of palladium is 1-8wt%; the structural formula of MIL-53(Al) is [Al(OH)(O2C-C6H4-CO2)]. The catalyst is suitable for catalytic elimination of CO in catalytic cracking catalyst regeneration device discharged flue gas and motor vehicle exhaust, and has the advantages of large specific surface area, uniform distribution of active components, high catalytic activity, high thermal stability, easy synthesis, reduction of CO catalytic conversion temperature, and low consumption of precious metals.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a Pd / MIL-53(Al) catalyst and its preparation. The invention has the application of reducing CO in FCC regeneration flue gas and automobile tail gas. Background technique [0002] Fluid Catalytic Cracking (FCC) is the main method used by refineries to produce light oil products. During the regeneration of FCC catalysts, there is a large amount of carbon monoxide (CO) in the emitted flue gas due to the incomplete combustion of coke. In addition, there is also a large amount of CO in vehicle exhaust. CO is colorless and odorless, which seriously affects people's life and health. Studies have shown that living in an environment with high CO concentration for a long time can cause many cardiovascular and cerebrovascular diseases. At the same time, CO is further burned into CO 2 It can release a lot of heat when it is used, and if it is not fully utilized, it will cause a lot ...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01D53/94B01D53/86B01D53/62
CPCY02A50/20
Inventor 李玉龙赵震刘坚梁倩王斯晗韦岳长杜龙弟邓旭亮肖光王志双韩会君赵玉梅王薇
Owner PETROCHINA CO LTD
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