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Catalyst used for reforming synthesis gas of methane carbon dioxide and preparation method and application thereof

A carbon dioxide and catalyst technology, which is applied in the field of application of the catalyst in methane carbon dioxide, can solve problems such as cumbersome steps, and achieve the effects of simple preparation method, strong anti-coking performance, and low cost

Active Publication Date: 2012-10-24
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, some people have modified nickel-based catalysts to achieve the purpose of enhancing carbon deposition resistance (Yao Xiaohong and other patents, a cordierite-based catalyst for methane carbon dioxide reforming to synthesis gas and its preparation method, publication number: CN102407119A He Huang Chuanjing and other patents, Catalyst for reforming methane and carbon dioxide to produce synthesis gas and its preparation method, publication number: CN1280097A), but they all add Co or precious metals Pt and Pd on the basis of Ni-based catalysts to obtain high anti-carbon deposition performance , and the steps in the preparation method are cumbersome

Method used

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  • Catalyst used for reforming synthesis gas of methane carbon dioxide and preparation method and application thereof
  • Catalyst used for reforming synthesis gas of methane carbon dioxide and preparation method and application thereof
  • Catalyst used for reforming synthesis gas of methane carbon dioxide and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Example 1 coprecipitation preparation of methane carbon dioxide reforming synthesis gas catalyst of the present invention

[0021] Raw materials: First, according to the ratio of the molar amount of nickel nitrate: the molar amount of aluminum nitrate: the molar amount of magnesium nitrate: the volume ratio of distilled water is 1nmol: 26nmol: 16nmol: 100ml, add magnesium nitrate, nickel nitrate and aluminum nitrate to distilled water In, be made into solution L, be the sodium hydroxide solution N of 200ml of the standard configuration of 1mol / L by sodium hydroxide solution, be the sodium carbonate solution M of 200ml of the standard configuration of 0.1mol / L by the sodium carbonate solution, solution L and Slowly drop N into solution M to ensure that the pH value is 10, and at the same time with stirring, a mixed hydroxide and carbonate precipitate is formed; the precipitate is repeatedly washed with deionized water for 5-10 times, dried at 80°C for 18h, and 900°C ℃ ro...

example 2

[0028] Methane carbon dioxide reforming of example 2 different nickel content synthesis gas catalyst

[0029] Catalyst preparation: according to the method of Example 1, the weighed amounts of nickel nitrate were 1nmol, 2nmol, and 3nmol respectively, and different Ni contents were 3%, 6%, and 9% methane carbon dioxide reforming synthesis gas catalysts.

[0030] Evaluation conditions

[0031] with 22%H 2 / N 2 The mixed gas is reduced for 30 minutes, and the volume composition of the raw gas is CH 4 / CO 2 is 1, the reaction temperature is 800°C, normal pressure, and the feed gas velocity is 40000h -1 . The evaluation results are shown in Table 2

[0032] Table 2. Reaction performance of methane carbon dioxide reforming catalysts with different nickel contents

[0033]

[0034] This example shows that the methane carbon dioxide reforming catalyst provided by the present invention has high catalytic activity when the nickel content is 3%-9%, and the carbon deposition amo...

example 3

[0035] The methane carbon dioxide reforming catalyst reaction performance of different precipitation pH of example 3

[0036] Catalyst preparation: according to the method of Example 1, the precipitation Ph is 9.5, 10 and 10.5, and the catalysts for the synthesis gas reforming of methane and carbon dioxide with different precipitation Ph are prepared.

[0037] Evaluation conditions

[0038] with 22%H 2 / N 2 The mixed gas is reduced for 30 minutes, and the volume composition of the raw gas is CH 4 / CO 2 is 1, the reaction temperature is 800°C, normal pressure, and the feed gas velocity is 40000h -1 . The evaluation results are shown in Table 3

[0039] Table 3. Reaction performance of methane carbon dioxide reforming catalysts with different precipitated Ph

[0040]

[0041] This example shows that the methane carbon dioxide catalyst provided by the present invention has higher activity and stronger anti-coking performance under the precipitation condition Ph in the r...

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Abstract

The invention relates to a catalyst used for reforming synthesis gas of methane carbon dioxide. The catalyst is prepared by loading active component metal nickel on MgO and MgAl2O4 mixed oxide. The general formula of the catalyst is Ni / MgO+MgAl2O4, and content of Ni occupies 3%-10% of weight of the catalyst. The catalyst resolves the problems of poor anti-carbon capability, complex preparation method, high construction cost and the like. A preparation method is simple, and synthesis strips are easy to control and apt to industrialization. The catalyst has the advantages of being high in catalyst activity, good in anti-carbon performance and stability, low in cost compared with noble metal catalyst and nickel-based modified catalyst and the like.

Description

technical field [0001] The invention relates to a catalyst for reforming methane and carbon dioxide to produce synthesis gas, a preparation method thereof, and an application of the catalyst in methane and carbon dioxide. technical background [0002] Methane carbon dioxide reforming to synthesis gas is an effective way to effectively utilize methane in natural gas and make a significant contribution to carbon dioxide emission reduction. H in the syngas produced by this process 2 / CO close to 1, can be directly used as raw material for oxo synthesis, F-T synthesis, and methanol synthesis, and can be applied to steam reforming of methane to produce synthesis gas and adjust gas production H 2 / CO too high problem. In addition, since the reforming of methane and carbon dioxide to synthesis gas is a strongly endothermic reaction, the development of this process is of great significance in terms of chemical energy storage. [0003] Catalysts for methane carbon dioxide reformin...

Claims

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Application Information

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IPC IPC(8): B01J23/755C01B3/40
CPCY02P20/52
Inventor 李文英冯向东冯杰
Owner TAIYUAN UNIV OF TECH
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