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Perovskite-type titanium-strontium-cobalt catalyst for hydrogen production by autothermal reforming of acetic acid

A perovskite-type, autothermal reforming technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as catalyst deactivation and achieve Reduced activation energy, high hydrogen yield, and stable activity

Active Publication Date: 2019-05-17
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a stable structure, anti-sintering, anti-coking, A new catalyst with oxidation resistance and stable activity

Method used

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  • Perovskite-type titanium-strontium-cobalt catalyst for hydrogen production by autothermal reforming of acetic acid
  • Perovskite-type titanium-strontium-cobalt catalyst for hydrogen production by autothermal reforming of acetic acid
  • Perovskite-type titanium-strontium-cobalt catalyst for hydrogen production by autothermal reforming of acetic acid

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] Weigh 2.107g of Co(NO 3 ) 2 ·6H 2 O, add 30.0ml of deionized water, stir at room temperature for 30min to prepare #1 solution; then weigh 14.494g of C 16 h 36 o 4 Ti, add 3.0ml of hydrochloric acid (35%) and 9.3ml of anhydrous acetic acid, fully stir at room temperature for 30min to dissolve, and obtain #2 solution; then weigh 2.890g of P123 solution, add 30.0ml of absolute ethanol, Stir at room temperature for 30 minutes to prepare #3 solution; slowly drop #1 solution into #3 solution, stir for 30 minutes, then slowly drop the obtained solution into #2 solution, stir at 40°C for 3 hours, let stand, Gel forming; put the obtained gel into an oven at 65°C and dry for 48 hours; then bake the dried sample at 600-800°C for 4 hours, press into tablets, and sieve to obtain the catalyst CDUT-LHG-TC, The composition is TiCoO 3 . The weight percent composition of the catalyst is: 15.0% of cobalt oxide and 85.0% of titanium dioxide.

[0030] The evaluation of autothermal r...

Embodiment 1

[0033] Weigh 2.106g of Co(NO 3 ) 2 ·6H 2 O and 1.701 g of SrNO 3 , add 30.0ml of deionized water, stir at room temperature for 30min to prepare #1 solution; then weigh 10.945g of C 16 h 36 o 4 Ti, add 2.3ml of hydrochloric acid (35%) and 7.0ml of anhydrous acetic acid, fully stir at room temperature for 30min to dissolve, and obtain #2 solution; then weigh 2.751g of P123 solution, add 30.0ml of absolute ethanol, Stir at room temperature for 30 minutes to prepare #3 solution. Subsequent steps are the same as in reference example 1 to obtain catalyst CDUT-LHG-TSC-1, the composition of which is Ti 0.8 Sr 0.2 CoO 3 , its XRD pattern is attached figure 1 , indicating that the catalyst formed a typical perovskite structure and a small amount of TiO 2 . The weight percent composition of the catalyst is: 15.0% of cobalt oxide, 64.2% of titanium dioxide and 20.8% of strontium oxide.

[0034] The CDUT-LHG-TSC-1 catalyst was investigated for the activity of autothermal reform...

Embodiment 2

[0036] Weigh 2.108g of Co(NO 3 ) 2 ·6H 2 O and 3.918g of SrNO 3 , add 30.0ml of deionized water, stir at room temperature for 30min to prepare #1 solution; then weigh 6.302g of C 16 h 36 o 4 Ti, add 1.48ml of hydrochloric acid (35%) and 4.6ml of anhydrous acetic acid, fully stir at room temperature for 30min to dissolve, and obtain #2 solution; then weigh 2.930g of P123 solution, add 30.0ml of absolute ethanol, Stir at room temperature for 30 minutes to prepare #3 solution. Subsequent steps are with reference example 1, obtain catalyst CDUT-LHG-TSC-2, and its composition is Ti 0.5 Sr 0.5 CoO 3 , and its typical XRD pattern is attached figure 2 , indicating that the catalyst formed a typical perovskite structure Ti 1-x Sr x CoO 3 , The weight percent composition of the catalyst is: cobalt oxide 15.0%, titanium dioxide 37.0%, strontium oxide 48.0%.

[0037] The CDUT-LHG-TSC-2 catalyst was investigated for the activity of autothermal reforming of acetic acid. The re...

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Abstract

The invention relates to a perovskite-type titanium-strontium-cobalt catalyst for hydrogen production by autothermal reforming of acetic acid and a preparation method. The catalyst with resistance tosintering, anti-carbon deposit, oxidation resistance and high activity is provided to aim at solving the problems that an existing catalyst has carbon deposits, sintering and oxidation of active components in the autothermal reforming process of acetic acid, and deactivation of the catalyst is caused. According to the perovskite-type titanium-strontium-cobalt catalyst for the hydrogen production by autothermal reforming of acetic acid and the preparation method, a sol-gel method is adopted to prepare the perovskite-type titanium-strontium-cobalt catalyst, and after calcination, a perovskite composite oxide catalyst Ti<1-x>Sr<x>CoO3 is obtained, wherein x=0-0.8. The perovskite structure facilitates the dispersion of an active component Co, strengthens the synergistic effect between the active component and a carrier, and inhibits the aggregation and growth of Co, thereby obtaining stable small-particle-size Co particles. In addition, Ti is partially replaced with Sr to increase the surface defect position and lattice defect structure of the perovskite-type catalyst, so that the carbon deposit resistance, oxidation resistance and thermal stability of the active component cobalt are improved, the diffusion of acetic acid, water vapor and oxygen is further facilitated, and the catalytic activity is increased.

Description

technical field [0001] The invention relates to a perovskite-type titanium strontium cobalt 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 promising energy carrier, hydrogen is currently produced mainly from fossil raw materials such as natural gas and coal. With the reduction of fossil raw material reserves and the aggravation of environmental pollution caused by its conversion process, biomass as a renewable clean energy has attracted widespread attention. Biomass can be converted into hydrogen by different methods, such as pyrolysis oil reforming, gasification, supercritical conversion, anaerobic fermentation, etc. One of the ways with good prospects and economic feasibility is to rapidly pyrolyze biomass , and then reform the biomass oil obtained by pyrolysis to produce hydrogen. Biomass oi...

Claims

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Application Information

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IPC IPC(8): B01J23/78
Inventor 黄利宏李辉谷安爽谢星月王巧
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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