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Ni/La2X2O7 catalyst for hydrogen production by autothermal reforming of acetic acid

A technology of autothermal reforming and catalyst, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, heterogeneous catalyst chemical elements, etc. Oxidation, poor stability and other problems, to achieve the effect of increasing fluidity, improving oxygen transfer capacity, and good selectivity

Active Publication Date: 2020-05-08
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a kind of New catalyst with stable structure, high conversion rate, good selectivity and anti-sintering

Method used

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  • Ni/La2X2O7 catalyst for hydrogen production by autothermal reforming of acetic acid
  • Ni/La2X2O7 catalyst for hydrogen production by autothermal reforming of acetic acid
  • Ni/La2X2O7 catalyst for hydrogen production by autothermal reforming of acetic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 5.170g of La(NO 3 ) 3 ·6H 2 O, 5.184g of Ce(NO 3 ) 3 ·6H 2 O, 3.011g of citric acid, add 50mL of deionized water, then stir until a clear solution is formed; slowly add NH 3 ·H 2 O solution was adjusted to its pH value to 2, and then stirred continuously in a water bath at 80 °C until a viscous gel was formed; the gel was aged at 130 °C for 12 h, and then heated in a resistance furnace at a rate of 10 °C / min to 800°C and roasted at this temperature for 4h, the catalyst precursor was obtained; 2.531g of Ni(NO 3 ) 2 ·6H 2 O, add 50mL of deionized water to make a solution, impregnate the catalyst precursor, and then dry at 80°C for 10h; in a resistance furnace at a heating rate of 10°C / min to 800°C and bake at this temperature for 4h , to obtain CDUT-LX-1 catalyst, its crystal structure is attached figure 1 As shown, the La 2 Ce 2 o 7 Loaded dispersed NiO phase, after reduction to form Ni / La 2 Ce 2 o 7 active center structure. The molar composition of...

Embodiment 2

[0033] Take 6.054g of La(NO 3 ) 3 ·6H 2 O, 3.736g of ZrO(NO 3 ) 2 2H 2 O, 3.525g of citric acid, add 50mL of deionized water, then stir until a clear solution is formed; slowly add NH 3 ·H 2 O solution was adjusted to its pH value to 2, and then stirred continuously in a water bath at 80 °C until a viscous gel was formed; the gel was aged at 130 °C for 12 h, and then heated in a resistance furnace at a rate of 10 °C / min to 800°C and roasted at this temperature for 4h, the catalyst precursor was obtained; 2.747g of Ni(NO 3 ) 2 ·6H 2 O, add 50mL deionized water to prepare a solution, impregnate the catalyst precursor, and then dry at 80°C for 10h; in a resistance furnace at a heating rate of 10°C / min to 800°C and bake at this temperature for 4h , to obtain CDUT-LX-2 catalyst, its crystal structure is attached figure 2 As shown, the cubic pyrochlore crystal phase La was formed 2 Zr 2 o 7 Loaded dispersed NiO phase, after reduction to form Ni / La 2 Zr 2 o 7 Active ...

Embodiment 3

[0036] Take 7.137g of La(NO 3 ) 3 ·6H 2 The citric acid of O, 4.156g is added the deionized water of 50mL, is mixed with solution #1; Get 5.609g of Ti(OC 4 h 9 ) 4 Add it into an appropriate amount of nitric acid solution to prepare solution #2; mix solution #1 and solution #2 to obtain solution #3, keep stirring until clear; slowly add NH 3 ·H 2 O solution was adjusted to its pH value to 2, and then stirred continuously in a water bath at 80 °C until a viscous gel was formed; the gel was aged at 130 °C for 12 h, and then heated in a resistance furnace at a rate of 10 °C / min to 800°C and roasted at this temperature for 4h, the catalyst precursor was obtained; 2.748g of Ni(NO 3 ) 2 ·6H 2 O was added to 50 mL of deionized aqueous solution, impregnated onto the catalyst precursor, and then dried at 80 °C for 10 h; after calcination at 800 °C at a heating rate of 10 °C / min in a resistance furnace for 4 h, the CDUT- LX-3 catalyst, its crystal structure is attached image ...

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Abstract

The invention relates to a Ni / La2X2O7 catalyst for hydrogen production by autothermal reforming of acetic acid. , Aiming at the problem of inactivation of an existing catalyst in the acetic acid autothermal reforming process, the invention provides the novel catalyst which is stable in structure and high in activity. A catalyst precursor is prepared by adopting a sol-gel method, and roasted by adopting an impregnation method to obtain the Ni / La2X2O7 (X is Ce, Zr or Ti) catalyst. According to the catalyst, the stability of active components is improved, the yield of hydrogen is increased, and generation of byproducts such as methane and acetone is effectively inhibited.

Description

technical field [0001] The present invention relates to a kind of Ni / La 2 x 2 o 7 The application of the (X=Ce, Zr, Ti) catalyst to convert acetic acid, the water phase component of biomass oil, into efficient and clean secondary energy hydrogen by means of autothermal reforming belongs to the technical field of hydrogen production by autothermal reforming of acetic acid. Background technique [0002] Hydrogen is widely recognized as a clean energy source that can help address pollution emissions, sustainability and energy security. Hydrogen can be obtained from a variety of sources, including non-renewable energy (coal, natural gas, and oil) and renewable energy (biomass, etc.). Hydrogen production from renewable biomass and its derivatives is one of the most promising methods for producing green chemical fuels. [0003] Biomass has low energy density and can be converted into biomass oil with high energy density after rapid pyrolysis. Biomass oil is viscous and comple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C01B3/32
CPCB01J23/002B01J23/83B01J2523/00C01B3/326C01B2203/0244C01B2203/1058B01J2523/3706B01J2523/847B01J2523/3712B01J2523/48B01J2523/47
Inventor 黄利宏代伶文谢星月
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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