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Boron nitride composite mesoporous oxide nickel-based catalyst and preparation method thereof

A boron nitride composite mesoporous, nickel-based catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to improve anti-sintering performance and low cost , Solve the effect of sintering and agglomeration

Active Publication Date: 2019-12-06
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on the construction of boron nitride composite mesoporous oxide nickel-based catalysts and their application in methane dry reforming

Method used

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  • Boron nitride composite mesoporous oxide nickel-based catalyst and preparation method thereof
  • Boron nitride composite mesoporous oxide nickel-based catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 0.400 g of boron nitride and 0.150 g of nickel nitrate and dissolve them in a mixed solution of water and ethanol, add 0.600 g of surface modifier CTAB and 1.80 mL of ammonia water, stir ultrasonically for 1 h, and dissolve 0.6 g of mesoporous oxide precursor TEOS Added dropwise and stirred vigorously for 6 h. The nickel loading was 6.5 wt%. Centrifugal washing with water and alcohol 3 times each, 60 o C drying for 12 h. The heating rate in the air atmosphere is 2 o C / min, 600 o C calcined for 4 h. Use hydrogen to program temperature reduction, first pass N 2 at 300 o C for 30 min, cooled to room temperature with 10 vol% H 2 / N 2 Mixed gas (30mL / min) 750 o C reduction for 1 h, a new structure nickel-based catalyst of boron nitride composite mesoporous oxide was obtained.

[0030] Test the catalytic activity of the above catalyst: Weigh 0.120 g (40-60 mesh) of the prepared catalyst and put it into a fixed bed quartz tube reactor for catalyst performance t...

Embodiment 2

[0032]Weigh 0.400 g of boron nitride and 0.150 g of nickel nitrate and dissolve them in a mixed solution of water and ethanol, add 0.600 g of surface modifier CTAB and 1.80 mL of ammonia water, stir ultrasonically for 1 h, and add 0.6 g of mesoporous oxide precursor TEOS dropwise Add and stir vigorously for 1 h. The nickel loading was 6.5 wt%. Centrifugal washing with water and alcohol 3 times each, 60 o C drying for 12 h. The heating rate in the air atmosphere is 2 o C / min, 600 o C calcined for 4 h. Use hydrogen to program temperature reduction, first pass N 2 at 300 o Pretreatment at C for 30 min, cooled to room temperature and treated with 10 vol% H 2 / N 2 Mixed gas (30mL / min) 750 o C reduction for 1 h, a new structure nickel-based catalyst of boron nitride composite mesoporous oxide was obtained.

[0033] Test the catalytic activity of the above catalyst: Weigh 0.120 g (40-60 mesh) of the prepared catalyst and put it into a fixed bed quartz tube reactor for catal...

Embodiment 3

[0035] Weigh 0.400g of boron nitride and 0.130g of nickel acetylacetonate and dissolve in the mixed solution of water and ethanol, add 0.600g of surface modifier CTAB and 1.80mL of ammonia water, stir ultrasonically for 1 h, and add 0.6g of mesoporous oxide precursor TEOS dropwise Add and stir vigorously for 6 h. The nickel loading was 6.5 wt%. Centrifugal washing with water and alcohol 3 times each, 60 o C drying for 12 h. The heating rate in the air atmosphere is 2 o C / min, 600 o C calcined for 4 h. Use hydrogen to program temperature reduction, first pass N 2 at 300 o Pretreatment at C for 30 min, cooled to room temperature and treated with 10 vol% H 2 / N 2 Mixed gas (30mL / min) 750 o C reduction for 1 h, a new structure nickel-based catalyst of boron nitride composite mesoporous oxide was obtained.

[0036] Test the catalytic activity of the above catalyst: Weigh 0.120 g (40-60 mesh) of the prepared catalyst and put it into a fixed bed quartz tube reactor for cata...

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Abstract

The invention relates to a boron nitride composite mesoporous oxide nickel-based catalyst and a preparation method thereof. The nano-boron nitride as the carrier having high thermal stability and carbon deposition resistance is combined with active metal anchoring and dispersion based on mesoporous oxides so that the catalytic material having high resistance to sintering and carbon deposition is obtained. The preparation method comprises adding a surfactant and ammonia water into high thermal stability boron nitride and nickel precursors as reactants, carrying out ultrasonic agitation, loading active metal components to the boron nitride nanosheet layer, and carrying out in-situ coating on the surface with an oxide having a mesoporous channel structure. The coated mesoporous structure can realize high dispersion of the active nickel component. Through drying, high temperature calcination and programmed heating reduction, the nickel-based catalyst having high performances and a novel structure is prepared. The boron nitride composite mesoporous oxide nickel-based catalyst has the advantages of simple process, low production cost, no environment pollution and high catalytic efficiency.

Description

technical field [0001] The invention relates to a catalyst for methane dry reforming reaction and a preparation method thereof, in particular to a boron nitride composite mesoporous oxide nickel-based catalyst and a preparation method thereof. Background technique [0002] With the rapid development of society, the combustion and consumption of fossil energy has brought about increasingly serious environmental problems, among which carbon dioxide and methane gas are one of the main culprits causing the greenhouse effect. Methane dry reforming reaction can efficiently utilize CH 4 and CO 2 Conversion to syngas CO and H 2 , on the one hand, this reaction can reduce the use of fossil fuels to alleviate the greenhouse effect, on the other hand, its product H 2 Syngas with a / CO of 1 is the main raw material for a series of chemical reactions such as Fischer-Tropsch reactions. Catalyst is the core of methane dry reforming to synthesis gas technology. A large number of studie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J23/755B01J21/06B01J21/04B01J23/10
CPCB01J21/04B01J21/06B01J21/066B01J23/10B01J23/755B01J27/24B01J35/0066
Inventor 张登松施利毅
Owner SHANGHAI UNIV
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