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Hydrocalumite-derived cobalt-based catalysts for autothermal reforming of acetic acid to produce hydrogen

A cobalt-based catalyst, hydrocalumite technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, hydrogen, etc., can solve the problems of carbon deposition, catalyst deactivation, etc. Catalytic activity, the effect of facilitating transfer and diffusion, and improving sintering resistance

Active Publication Date: 2019-09-17
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a structurally stable , Anti-coke, anti-sintering, anti-oxidation, new catalyst with stable activity

Method used

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  • Hydrocalumite-derived cobalt-based catalysts for autothermal reforming of acetic acid to produce hydrogen
  • Hydrocalumite-derived cobalt-based catalysts for autothermal reforming of acetic acid to produce hydrogen
  • Hydrocalumite-derived cobalt-based catalysts for autothermal reforming of acetic acid to produce hydrogen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh 11.329g of Ca(NO 3 ) 2 4H 2 O, 2.320g of Co(NO 3 ) 2 ·6H 2 O and 5.246g of Al(NO 3 ) 3 9H 2 O, add 69.9mL of deionized water to prepare solution #1; weigh 22.374g of NaOH and 3.705g of anhydrous Na 2 CO 3 , adding 148.6mL of deionized water to prepare solution #2; the subsequent steps are the same as in Reference Example 1, and a precursor with a hydrocalumite structure is obtained, containing a small amount of CaCO 3 and Al(OH) 3 , its typical structure is attached figure 1 Shown; Ca-Co-Al-O mesoporous composite oxide was obtained after calcination, the catalyst is based on calcium oxide, contains cobalt-aluminum spinel phase and a small amount of Ca 12 al 14 o 33 , its typical structure is attached figure 2 As shown, the CDUT-CCA-102 catalyst is obtained; the weight percent composition of the catalyst is: calcium oxide is 67.3%, cobalt oxide is 14.9%, and aluminum oxide is 17.8%.

[0036] The activity of the CDUT-CCA-102 catalyst was investigated...

Embodiment 2

[0038] Weigh 13.113g of Ca (NO 3 ) 2 4H 2 O, 2.190g of Co(NO 3 ) 2 ·6H 2 O and 4.122g of Al(NO 3 ) 3 9H 2 O, add 69.8mL of deionized water to prepare solution #1; weigh 22.335g of NaOH and 3.699g of anhydrous Na 2 CO 3 , add 148.3mL of deionized water to prepare solution #2; the subsequent steps are the same as in Reference Example 1, and the precursor of hydrocalumite structure is obtained, which contains a small amount of CaCO 3 and Al(OH) 3 , its typical structure is attached figure 1 As shown, the Ca-Co-Al-O mesoporous composite oxide was obtained after calcination. The catalyst uses calcium oxide as the skeleton, contains cobalt-aluminum spinel phase and a small amount of Ca 12 al 14 o 33 , its typical structure is attached figure 2 As shown, the CDUT-CCA-103 catalyst is obtained; the weight percent composition of the catalyst is: calcium oxide is 71.6%, cobalt oxide is 14.1%, and aluminum oxide is 14.3%.

[0039]The activity of the CDUT-CCA-103 catalyst w...

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Abstract

The invention relates to a hydrocalumite derived cobalt-based catalyst for hydrogen production by autothermal reforming of acetic acid. Directed at the problem that catalyst structure change and the oxidation and sintering of active components can cause catalyst deactivation in existing catalysts during the autothermal reforming reaction of acetic acid, the invention provides a new catalyst characterized by stable structure, sintering resistance, oxidation resistance, carbon deposition resistance, and high activity. The molar composition of the catalyst is (CaO)a(CoO)b(AlO1.5) c, wherein a is1.66-5.19, b is 0.34-0.81 and c is 1.0. The invention adopts coprecipitation method to prepare a catalyst precursor, and then roasting is carried out to obtain the Ca-Co-Al-O mesoporous composite oxide. The catalyst takes calcium oxide as the framework, contains cobalt-alumina spinel phase and a small amount of Ca12Al14O33, inhibits the acidity of the catalyst, improves the carbon deposition resistance and sintering resistance of the catalyst, and improves the activity of hydrogen production by autothermal reforming of acetic acid.

Description

technical field [0001] The invention relates to a cobalt-based catalyst for hydrogen production by autothermal reforming of acetic acid, in particular to a cobalt-based catalyst with a hydrocalumite structure as a precursor and a preparation method thereof, belonging to the production of hydrogen by autothermal reforming of acetic acid field. Background technique [0002] Today's emerging energy mainly includes hydrogen energy, solar energy, wind energy, geothermal energy, ocean energy, and nuclear energy. Hydrogen energy, as an efficient, clean, and sustainable energy, has high energy density, wide sources, convenient storage and transportation, and various forms of utilization. And other advantages, has been widely concerned in the world, therefore, how to produce and better use of hydrogen energy has become a hot research topic. [0003] Traditional hydrogen production methods are divided into the following categories: hydrogen production by electrolysis of water, hydrog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/78C01B3/32
Inventor 黄利宏刘燕王巧牛飞兴张羽代伶文
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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