Ferric oxide carried palladium catalyst and its preparation method and application

A palladium catalyst, iron oxide technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of less application of palladium catalysts, and achieve the effect of low light-off temperature and high catalytic activity

Inactive Publication Date: 2007-05-23
LANZHOU 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

The application of supported gold and platinum catalysts in the water vapor shift reaction has received extensive attention and research, and the application of unique palladium catalysts in the water vapor shift reaction is seldom

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1M Fe(NO 3 ) 3Solution 10ml with 0.29M H 2 PdCl 4 Mix 0.05ml of the solution evenly, add dropwise to 30ml (wt) 10% NaCO under vigorous stirring 3 Co-precipitation is formed in the solution, adjust the pH value to 8, continue to stir for 2 hours, let it stand for 2.5 hours, filter, wash with distilled water, leave it at room temperature for 24 hours to let the catalyst dry naturally, roast at 400°C for 5 hours, and reduce it with pure hydrogen at 200°C for 2 hours, the catalyst cat 1 was obtained.

Embodiment 2

[0036] 1M Fe(NO 3 ) 3 Solution 10ml 0.29M H 2 PdCl 4 Mix 0.2ml of the solution evenly, put it in an Erlenmeyer flask, add 20ml of 1M NaOH solution drop by drop under strong stirring to form a co-precipitation, adjust the pH value to 7.5, continue to stir for 2h, let stand for 2.5h, filter, and wash with distilled water , placed at room temperature for 24 hours to allow the catalyst to dry naturally, calcined at 500°C for 5 hours, 50% H at 200°C 2 After reduction for 2 hours, the catalyst cat 2 was obtained.

Embodiment 3

[0038] 1M Fe(NO 3 ) 3 Solution 10ml with 0.35M (NH 4 ) 2 PdCl 4 0.2ml of the solution was mixed evenly, placed in a conical flask, and 1M K was added dropwise under vigorous stirring 2 CO 3 Solution 30ml, forming a coprecipitate, adjust the pH value to 8, continue to stir for 2h, let it stand for 2.5h, filter, wash with distilled water, dry at 50°C for 4 hours, roast at 600°C for 5 hours, 300°C 10%H 2 After 2 hours of reduction, the catalyst cat 3 was obtained.

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PUM

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Abstract

The invention relates to a ferric oxide palladium catalyst, wherein said catalyst is palladium catalyst loaded on ferric oxide, while the palladium mass percentage is 0.1-20% of carrier; and it is prepared by deposit method; said catalyst is multifunctional one, which has better low-temperature oxidize activity on CO, H2, CO+H2 and methane, and eliminates CO+H2 at room temperature, while it has high catalysis activity on steam.

Description

field of invention [0001] The invention relates to an iron oxide-supported palladium catalyst, a preparation method and application thereof. Background technique [0002] Due to their irreplaceable catalytic activity and selectivity, noble metal catalysts play an extremely important role in oil refining, petrochemical and organic synthesis. The precious metal palladium has excellent catalytic performance, and the application of palladium catalysts in the petrochemical industry even exceeds that of platinum catalysts. For example, catalytic reforming in petroleum refining, isomerization and dehydrogenation of alkanes and aromatics, selective hydrogenation in olefin production, and production of organic chemical raw materials such as acetaldehyde, vinyl acetate, and methyl methacrylate. Palladium catalyst is inseparable. In addition, palladium is an excellent catalyst or an important component of catalysts in various organic chemical reactions such as hydrogenation, oxidativ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/42B01J23/89B01J37/03
Inventor 邓友全乔波涛李作鹏
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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