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Spinel-supported catalyst for dry reforming of coke oven gas and preparation method thereof

A supported catalyst and coke oven gas technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems that do not involve catalyst stability, etc.

Inactive Publication Date: 2014-02-26
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patent (publication number CN101352687) discloses a Ni / La that can be used for carbon dioxide reforming of methane 2 o 3 -γ-Al 2 o 3 Catalyst series, this type of catalyst has better methane conversion rate and carbon monoxide selectivity, but the patent does not involve the stability of this type of catalyst

Method used

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  • Spinel-supported catalyst for dry reforming of coke oven gas and preparation method thereof
  • Spinel-supported catalyst for dry reforming of coke oven gas and preparation method thereof
  • Spinel-supported catalyst for dry reforming of coke oven gas and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 120 mmol Al(NO 3 ) 3 9H 2 O, 60 mmol Mg(NO 3 ) 2 ·6H 2 O and 2.76 mol urea were dissolved in a container filled with a certain amount of deionized water, and 50 g of polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (P123, Ma=5800) was taken Dissolve in another container with a certain amount of deionized water. After P123 is dissolved, mix the samples in the two containers evenly and heat to 105~120 through an oil bath. o C, with vigorous stirring for 36 hours. The resulting precipitate was suction-filtered, washed twice with deionized water, and then washed at 120 o C dried overnight, and then the dried sample at 650 o C roasting for 8 hours, and finally grinding the obtained solid into powder, taking spinel powder within the range of 100-200 mesh as a carrier.

[0024] Take 4.259 mmol Ni(NO 3 ) 2 ·6H 2 O was made into a solution with deionized water, and 5 g of the above-mentioned prepared carrier was added to it, and after being...

Embodiment 2

[0026] First, the spinel powder carrier was prepared by the same method as in the above-mentioned Example 1.

[0027] Take 6.791 mmol Co(NO 3 ) 2 ·6H 2 O was made into a solution with deionized water, and 5 g of the above-mentioned prepared carrier was added to it, and after being fully stirred, it was placed in an ultrasonic water tank for ultrasonic immersion for 1 hour, followed by immersion at room temperature for 48 hours, at 100±10 o C stirring continuously until dry, and at 120 o C after drying for 5 hours, then at 850 o C roasting for 5 hours, crush the obtained solid into powder, use a mold with a diameter of 1.5 cm, shape it under a pressure of 10 kN (keep the pressure for 1 minute), crush it, sieve it, and take the range of 20 to 40 mesh as Catalyst, the catalyst is recorded as Co / MgAl 2 o 4 .

Embodiment 3

[0029] First, the spinel powder carrier was prepared by the same method as in the above-mentioned Example 1.

[0030] Take 3.396 mmol Ni(NO 3 ) 2 ·6H 2 O, 0.469 mmol PdCl 2 Make a solution with deionized water, add 5 g of the above prepared carrier to it, stir thoroughly, put it into an ultrasonic water tank for ultrasonic immersion for 1 hour, then immerse at room temperature for 24 hours, at 100±10 o C stirring continuously until dry, and at 110 o C dried for 5 hours, then at 800 o C roasting for 2 hours, crush the obtained solid into powder, use a mold with a diameter of 1.5 cm, shape it under a pressure of 15 kN (keep the pressure for 1 minute), crush it, sieve it, and take the range of 20 to 40 mesh as Catalyst, this catalyst is recorded as Ni-Pd / MgAl 2 o 4 .

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Abstract

The invention relates to a spinel-supported catalyst for dry reforming of coke oven gas and a preparation method of thereof and belongs to the technical fields of comprehensive utilization of metallurgical resources and preparation of catalysts. The spinel-supported catalyst is characterized in that large-specific surface area MgAl2O4 spinel with a mesoporous structure serves as a carrier, rare earth or a rare earth oxide solid solution serves as an aid, and one or two in Ni, Co, Ru, Pt and Pd are taken as active metal components, wherein the mass percent of the active metal components is 5-11 percent, and the mass percent of the aid is 0-5 percent. The large-specific surface area MgAl2O4 spinel with the mesoporous structure is prepared by adopting a uniform urea decomposition-template method, and the aid and the active metal components are impregnated step by step according to an impregnation method. By the catalyst prepared by the method, the carbon deposition tendency in the dry reforming reaction process of the coke oven gas can be effectively reduced; and the catalyst has the advantages of large specific surface area, high active metal dispersibility, high catalytic activity, high product selectivity and long service life.

Description

technical field [0001] The invention relates to a spinel-loaded catalyst for dry reforming of coke oven gas and a preparation method thereof, belonging to the technical fields of comprehensive utilization of metallurgical resources and catalyst manufacture. Background technique [0002] With the pace of modern civilization and the acceleration of industrialization, energy and environmental issues have brought unprecedented pressure and challenges to the sustainable development of human society. The energy conversion process of fuel cell technology has become an ideal power generation mode for human beings in the future because of its advantages that traditional power plants and conventional chemical power sources do not have. As the energy source of fuel cell vehicles, especially proton exchange membrane fuel cell vehicles, hydrogen has the highest activity in electrode reactions, simple reactions, and no side reactions. It is the best fuel for fuel cell vehicles. At th...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J23/75B01J23/89B01J23/83C01B3/40
CPCY02P20/52
Inventor 程红伟鲁雄刚陶伟朱秋桦江波
Owner SHANGHAI UNIV
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