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Ba-Mn perovskite-type cobalt-based catalyst for hydrogen production by autothermal reforming of acetic acid

A cobalt-based catalyst and perovskite-type technology, applied in the field of hydrogen production from autothermal reforming of acetic acid, can solve problems such as catalyst deactivation, achieve the effects of reducing activation energy, improving stability, and suppressing intermediate products

Active Publication Date: 2020-09-15
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Ba-Mn perovskite-type cobalt-based catalyst for hydrogen production by autothermal reforming of acetic acid
  • Ba-Mn perovskite-type cobalt-based catalyst for hydrogen production by autothermal reforming of acetic acid

Examples

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Effect test

example 1

[0025] Weigh 1.416g of Co(NO 3 ) 2 ·6H 2 O, 3.824g of Ba(CH 3 COO) 2 and 5.358g of 50wt% Mn(NO 3 ) 2 solution, add 30ml of deionized water to prepare solution #1; then weigh 10.971g of citric acid C 6 h 8 o 7 ·H 2 O, add 30ml of deionized water to prepare solution #2; slowly add solution #1 dropwise to solution #2, and stir at 60°C, after 2.5 hours, the solution gradually turns into a colloid, and put it in an oven In the process, dry at 105°C for 12 hours; heat the dried sample to 1000°C at a rate of 10°C / min in a tube furnace, and bake it for 4 hours to obtain the catalyst CDUT-CMC-1 of the present invention. The molar composition of oxides is (BaO) 0.43 (MnO 1.5 ) 0.43 (CoO 1.5 ) 0.14 , and the weight percentage in terms of oxides is composed as follows: the content of barium oxide is 60.4%, the content of manganese oxide is 29.5%, and the content of cobalt oxide is 10.0%.

[0026] The reactivity evaluation of autothermal reforming of acetic acid was carried ...

Embodiment 1

[0029] Weigh 2.811g of Co(NO 3 ) 2 ·6H 2 O, 3.854g of Ba(CH 3 COO) 2 and 21.604g of 50wt% Mn(NO 3 ) 2 solution, add 30ml of deionized water to prepare solution #1; then weigh 26.828g of citric acid C 6 h 8 o 7 ·H 2 O, add 30ml of deionized water to prepare solution #2; slowly add solution #1 dropwise to solution #2, and stir at 60°C, after 2.5 hours, the solution gradually turns into a colloid, and put it in an oven , dried at 105°C for 12 hours. The dried sample was heated to 1000°C at a rate of 10°C / min in a tube furnace, and calcined for 4 hours to obtain the catalyst CDUT-CMC-2 of the present invention. Its typical XRD spectrum is shown in the attached figure 1 shown, with BaMnO containing 3 and BaMn 0.7 co 0.3 o 2.8 structure of Ba-Mn perovskite-type Ba-Mn-Co-O composite oxide cobalt-based catalysts, and at the same time, formed such as attached figure 2 The pore size distribution of the shown mesopores; the molar composition of the catalyst in terms of ox...

Embodiment 2

[0032] Weigh 2.821g of Co(NO 3 ) 2.6 ·H 2 O, 5.759g of Ba(CH 3 COO) 2 and 16.138g of 50wt% Mn(NO 3 ) 2 solution, add 30ml of deionized water to prepare solution #1; then weigh 24.375g of citric acid C 6 h 8 o 7 ·H 2 O, add 30ml of deionized water to prepare solution #2; slowly add solution #1 dropwise to solution #2, and stir at 60°C, after 2.5 hours, the solution gradually turns into a colloid, and put it in an oven In the process, dry at 105°C for 12 hours; heat the dried sample to 1000°C at a rate of 10°C / min in a tube furnace, and bake it for 4 hours to obtain the catalyst CDUT-CMC-3 of the present invention, typically structure as attached figure 1 shown, with BaMnO containing 3 and BaMn 0.7 co 0.3 o 2.8 Structured Ba-Mn perovskite-type Ba-Mn-Co-O composite oxide cobalt-based catalyst, the molar composition in terms of oxide is: (BaO) 0.29 (MnO 1.5 ) 0.58 (CoO 1.5 ) 0.13 , and the weight percentage in terms of oxides is composed as follows: the content ...

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Abstract

The invention relates to a Ba-Mn perovskite type cobalt-based catalyst for hydrogen production by autothermal reforming of acetic acid. Aiming at the problem that an existing catalyst is inactivated in the acetic acid autothermal reforming process, the invention provides a novel catalyst with a stable structure and high activity. The molar composition of the catalyst is (BaO)a(MnO1.5)b(CoO1.5)c interms of oxides, wherein a is 0.177-0.430, b is 0.430-0.709, and c is 0.113-0.140; the catalyst is composed of the components in percentage by weight based on oxides: 30.4 to 60.4 percent of barium oxide, 29.5 to 59.6 percent of manganese oxide and 8.0 to 11.0 percent of cobalt oxide. A sol-gel method is adopted for preparation; cobalt is used as an active component, manganese and barium are introduced, and a stable BaMn0.7Co0.3O2.8 and BaMnO3 perovskite structure composite oxide structure is formed after roasting, so that the oxidation resistance and dispersity of active components are improved, and meanwhile, the hydrogen yield, sintering resistance and carbon deposition resistance in the acetic acid autothermal reforming process are improved.

Description

technical field [0001] The invention relates to the application of a Ba-Mn perovskite-type cobalt-based catalyst in the production of hydrogen by autothermal reforming of acetic acid, belonging to the field of producing hydrogen by autothermal reforming of acetic acid. Background technique [0002] With the rapid development of human society and economy, the demand for energy continues to increase. Finding alternative energy sources to traditional fossil fuels has become an urgent goal in today's world, and hydrogen is a clean source of energy. Traditional hydrogen production methods mainly include oil catalytic cracking, natural gas reforming, and electrolysis of water to produce hydrogen. Hydrogen production by electrolysis of water is costly, while hydrogen production from oil and natural gas needs to consume a large amount of non-renewable resources. Therefore, in order to realize the long-term and efficient utilization of hydrogen energy, the primary problem to be solv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889C01B3/32
CPCB01J23/002B01J23/8892B01J2523/00C01B3/326C01B2203/0244C01B2203/1052B01J2523/25B01J2523/72B01J2523/845
Inventor 黄利宏宋玉鑫陈柏全陈慧胡晓敏安爽
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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