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Catalyst for producing synthesis gas or hydrogen and its production method and application

A catalyst and synthesis gas technology, which is applied to catalysts and their preparation methods and application fields, can solve problems such as poor stability and easy deactivation, and achieve the effects of good temperature resistance, good thermal stability and wide operating temperature range.

Active Publication Date: 2017-01-11
高潞空气化工产品(上海)能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has the characteristics of high activity, high stability and high temperature resistance, and overcomes the shortcomings of existing methane dry reforming catalysts such as poor stability and easy deactivation

Method used

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  • Catalyst for producing synthesis gas or hydrogen and its production method and application
  • Catalyst for producing synthesis gas or hydrogen and its production method and application
  • Catalyst for producing synthesis gas or hydrogen and its production method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] 0.02mol of Ni(NO 3 ) 2 ·6H 2 O, 0.005mol of Cr(NO 3 ) 3 9H 2 O, 0.04mol of Mg(NO 3 ) 2 ·6H 2 O, 0.005mol La(NO 3 ) 3 ·6H 2 O and 0.015mol of Al(NO 3 ) 3 9H 2 O was dissolved in 100ml of deionized water, which was called solution A.

[0069] 0.16mol of NaOH and 0.01mol of Na 2 CO 3 Dissolve in 100ml of deionized water and set as solution B.

[0070] Then, solution A and solution B were transferred to two separatory funnels respectively for subsequent use, solution A was added dropwise in a 500ml beaker with 100ml deionized water at a flow rate of 2ml / min, and solution B was added dropwise at the same time, and The pH of the precipitation environment was controlled to be 10 by adjusting the dropping speed, and the mixture was continuously stirred (the stirring speed was 500 rpm). After the dropwise addition was completed, the stirring was continued for 3 hours, and then aged at 60° C. for 24 hours. Wash with 2000ml deionized water and filter with suction ...

Embodiment 2

[0073] 0.005mol of Cr 2 o 3 , 0.01mol of light MgO, 0.04mol of γ-Al 2 o 3 Mix and grind with a mortar, dissolve 0.01mol of nickel acetate in 20ml of deionized water, then pour it into the above-mentioned mixed and ground material, and continue to mix and grind for 2 hours. After that, let it stand for 12 hours, and then dry it at 80°C for 12 hours. After pre-calcining at 400°C for 2 hours, calcining at 1000°C in an air atmosphere for 4 hours, the catalyst Cr-Ni-Mg-Al composite oxide was obtained. The catalyst was crushed through a 100-mesh sieve, then pressed into tablets, crushed with a crushing sieve, and sieved into 80-100 mesh Reserved.

[0074] Get 0.05 grams of catalyst, mix it with 1.0 g of quartz sand of the same mesh number (80-100 mesh), put it into a quartz tube reactor with an inner diameter of 10.0 mm, and use H 2 / N 2 is 1 / 1, the temperature is programmed to rise to the reaction temperature of 850°C, and the dry reforming reaction of methane is carried out,...

Embodiment 3

[0076] Select 100g γ-Al 2 o 3 As a carrier, the carrier is crushed and passed through a 100-mesh sieve for subsequent use; 0.001mol of lanthanum nitrate is dissolved in 10ml of distilled aqueous solution, marked as solution A, for subsequent use; 0.01mol of Ni(NO 3 ) 2 ·6H 2 O, 0.005mol of Cr(NO 3 ) 3 9H 2 O was dissolved in 40ml of distilled aqueous solution, marked as solution B, and set aside.

[0077] Immerse solution A in the above sieved γ-Al 2 o 3 As a carrier, stir for 2 hours, age for 24 hours, and dry at 80°C for 6 hours. After pre-calcining at 400°C for 2 hours, calcining at 800°C in an air atmosphere for 4 hours to obtain La surface-modified γ-Al 2 o 3 Carrier (i.e. La / γ-Al 2 o 3 carrier), and then impregnated solution B in the modified La / γ-Al 2 o 3 on the carrier, stirred for 2 hours, aged for 24 hours, and dried at 80°C for 6 hours. After pre-calcining at 400°C for 2h, calcining in air atmosphere at 800°C for 4h, the catalyst Ni-Cr-La / γ-Al was obt...

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PUM

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Abstract

The invention discloses a catalyst for preparing synthesis gas or hydrogen and a preparation method and application of the catalyst. The catalyst comprises an active ingredient and an assistant, and is loaded on a carrier. The preparation method comprises the following steps: uniformly mixing raw materials for preparing the catalyst through a coprecipitation, impregnation or mixed-grinding manner, and roasting to obtain the catalyst. The catalyst is applied to reaction of producing synthesis gas by reforming of natural gas or reaction of producing hydrogen by reforming of natural gas, or reaction of producing the synthesis gas or hydrogen by reclaiming coalbed methane, purge gas and flue gas with methane ingredient being 5-50 percent by mole. The catalyst has the characteristics of high activity, high stability, high temperature resistance and the like, and overcomes defects of poor stability, high probability of inactivation and the like of an existing methane reforming catalyst.

Description

technical field [0001] The invention relates to a catalyst and its preparation method and application, in particular to a catalyst for preparing synthesis gas or hydrogen production and its preparation method and application. Background technique [0002] The indirect utilization of natural gas to synthesize liquid fuels and chemicals through synthesis gas has once again become the focus of world attention. In this indirect method, the key issue is to research and develop an efficient catalyst for producing synthesis gas from natural gas. At present, the main method of industrial synthesis gas is the steam reforming of methane, which is suitable for the production of synthetic ammonia and hydrogen production. In recent years, researchers have developed new processes for producing synthesis gas such as carbon dioxide reforming of methane, partial oxidation and autothermal reforming. In the late 1970s, autothermal reforming was first proposed. The process of autothermal refo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/86C01B3/40
CPCY02P20/52
Inventor 孙予罕李晋平肖亚宁张军孔文波潘秉荣赵铁均黄巍孙志强王东飞
Owner 高潞空气化工产品(上海)能源科技有限公司
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