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Nickel-manganese-aluminum composite oxide catalyst for producing hydrogen by autothermal reforming of acetic acid

A technology of autothermal reforming and nickel-based catalysts, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, catalyst activation/preparation, etc., can solve problems such as catalyst deactivation, and promote Effects of dehydrogenation reaction, inhibition of acetic acid dehydration and ketonization reaction, and improvement of antioxidant activity

Active Publication Date: 2019-01-18
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a structurally stable, A new catalyst with high sintering resistance, carbon deposition resistance, oxidation resistance and high activity

Method used

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  • Nickel-manganese-aluminum composite oxide catalyst for producing hydrogen by autothermal reforming of acetic acid
  • Nickel-manganese-aluminum composite oxide catalyst for producing hydrogen by autothermal reforming of acetic acid
  • Nickel-manganese-aluminum composite oxide catalyst for producing hydrogen by autothermal reforming of acetic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 2.335g of Ni(NO 3 ) 2 ·6H 2 O, 7.722g of Al(NO 3 ) 2 9H 2 O and 11.861g of Mn(NO 3 ) 2 (50 wt%), the above-mentioned nitrates were placed in a beaker together, then 61.75 mL of deionized water was added, stirred and dissolved with a magnetic stirrer, and solution #1 was prepared. Weigh 9.156g of NaOH and 1.516g of anhydrous Na 2 CO 3 , was added to 243.20ml of deionized water to prepare solution #2. Subsequent steps are the same as reference example 1, and obtain a typical structure such as attached figure 1 shown containing NiMn 2 o 4 and MnAl 2 o 4 Composite oxides with spinel structure, such as attached figure 2 Catalyst CUT-NMA-102 with mesoporous structure is shown. The molar composition of the catalyst is (NiO) 0.13 (MnO) 0.54 (AlO 1.5 ) 0.33 , and its weight composition is: nickel oxide is 15.0%, manganese oxide (MnO) is 58.8%, and aluminum oxide is 26.2%.

[0033] The catalyst CUT-NMA-102 has been tested on the autothermal reforming ac...

Embodiment 2

[0035] Weigh 2.035g of Ni(NO 3 ) 2 ·6H 2 O, 4.916g of Al(NO 3 ) 2 9H 2 O and 11.565g of Mn(NO 3 ) 2 (50 wt%), the above-mentioned nitrates were placed in a beaker together, then 52.42 mL of deionized water was added, stirred and dissolved with a magnetic stirrer, and solution #1 was prepared. Weigh 6.432g of NaOH and 1.065g of anhydrous Na 2 CO 3 , was added to 170.86ml of deionized water to prepare solution #2. Subsequent steps are the same as reference example 1, and obtain a typical structure such as attached figure 1 shown and attached figure 2 shown containing NiMn 2 o 4 and MnAl 2 o 4 Catalyst CUT-NMA-103 with composite oxide mesoporous structure with spinel structure. The molar composition of the catalyst is (NiO) 0.13 (MnO) 0.62 (AlO 1.5 ) 0.25 , and its weight composition is as follows: nickel oxide is 15.0%, manganese oxide (MnO) is 65.8%, and aluminum oxide is 19.2%.

[0036] The catalyst CUT-NMA-103 was tested for autothermal reforming activity...

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Abstract

The invention relates to a nickel-manganese-aluminum composite oxide catalyst for producing hydrogen by autothermal reforming of acetic acid. For the problem of oxidization and sintering of an activecomponent of the catalyst in the process of autothermal reforming of acetic acid and catalyst deactivation, the invention provides a new anti-carbon, oxidation-resistant and high-activity catalyst with a stable structure. The catalyst has a molar composition of (NiO)a(MnO)b(AlO<1.5>)c, wherein a is 0.12-0.15, b is 0.32-0.78 and c is 0.10-0.50. The catalyst is prepared by using a co-precipitation method, nickel is used as the active component, and an auxiliary agent of manganese and a carrier of aluminum oxide are simultaneously introduced, the substances are roasted to form the stable composite oxide catalyst containing a NiMn2O4 and MnAl2O4 spinel structure. The oxidation resistance and the dispersibility of the active component are improved, and meanwhile the hydrogen yield and the sintering resistance and anti-carbon capability in the process of autothermal reforming of acetic acid are improved.

Description

technical field [0001] The invention relates to a nickel-manganese-aluminum composite oxide catalyst for hydrogen production by autothermal reforming of acetic acid and a preparation method thereof, belonging to the field of hydrogen production by autothermal reforming of acetic acid. Background technique [0002] As a clean energy, hydrogen has attracted extensive attention from researchers because of its high combustion calorific value and wide range of sources. In terms of hydrogen production, petroleum, natural gas, alcohols, biomass oil and cellulose can be used as raw materials, and can be obtained through steam reforming, partial oxidation reaction and autothermal reforming. With the continuous development and progress of agricultural technology and the increasing awareness of environmental friendliness, biomass oil converted from green biomass through rapid pyrolysis has become a potential raw material for hydrogen energy with high cost performance. The composition ...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J37/03B01J37/08C01B3/40
CPCB01J23/002B01J23/8892B01J37/031B01J37/082B01J2523/00C01B3/40C01B2203/1058B01J2523/31B01J2523/72B01J2523/847Y02P20/52
Inventor 黄利宏陈柏全谢星月贾玄弈杨季龙李辉谷
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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