Preparation method of nickel-based methane carbon dioxide reforming catalyst

Abstract

The invention discloses a preparation method of a nickel-based methane carbon dioxide reforming catalyst, which comprises the following steps: (1) mixing Ce (NO3) 3.6 H2O, Ni (NO3) 2.6 H2O and glycine, adding deionized water, and uniformly stirring to obtain a nitrate solution; (2) adding silica sol into the nitrate solution, and uniformly stirring to obtain mother liquor; (3) heating and evaporating the mother liquor to dryness until the sample is subjected to combustion reaction; and (4) calcining a product obtained after combustion to obtain the nickel-based methane carbon dioxide reformingcatalyst. According to the invention, NiO and CeO2 are loaded on the SiO2 carrier through a solution combustion method to prepare the high-dispersion Ni-CeO2 / SiO2 catalyst, and meanwhile, the high-dispersion Ni-CeO2 / SiO2 catalyst has good methane and carbon dioxide reforming activity, stability and carbon deposition resistance.

Description

technical field

[0001] The invention relates to the technical field of catalyst preparation, in particular to a preparation method of a nickel-based methane carbon dioxide reforming catalyst. Background technique

[0002] methane carbon dioxide reforming reaction (CO 2 +CH 4 =2CO+2H 2 ) can convert two typical greenhouse gases, carbon dioxide and methane, into synthesis gas (CO and H 2 ), as a chemical raw material, synthesis gas is widely used in the chemical industry, so the research on methane carbon dioxide reforming reaction has attracted much attention in recent years. The development of catalysts with high activity, high selectivity and high stability is one of the key factors for the industrial application of methane carbon dioxide reforming reaction.

[0003] In the carbon dioxide reforming process of methane, the catalysts mainly include two types of catalysts with noble metals (Pd, Pt, Rh, Ru, Ir) as active centers and non-noble metals (Fe, Co, Ni) as active c...

Examples

Embodiment 1

[0030] (1) 2.36g Ce(NO 3 ) 3 ·6H 2 O, 0.32g Ni(NO 3 ) 2 ·6H 2 O and 0.6g glycine are mixed, and add 6.3mL deionized water, obtain nitrate solution after stirring;

[0031] (2) Add 1.26mL silica sol in the nitrate solution;

[0032] (3) Heat the mother liquor on a 230°C electric heating plate and evaporate to dryness until the sample undergoes a combustion reaction;

[0033] (4) Put the product obtained after combustion into a muffle furnace for calcination at 600° C. for 4 hours to obtain the nickel-based methane carbon dioxide reforming catalyst.

Embodiment 2

[0035] (1) 2.36g Ce(NO 3 ) 3 ·6H 2 O, 0.12g Ni(NO 3 ) 2 ·6H 2 O and 0.6g glycine are mixed, and add 10mL deionized water, obtain nitrate solution after stirring;

[0036] (2) Add 1 mL of silica sol to the nitrate solution, and stir to obtain the mother liquor;

[0037] (3) Heat the mother liquor on a 220°C electric heating plate and evaporate to dryness until the sample undergoes a combustion reaction;

[0038] (4) Put the product obtained after combustion into a muffle furnace for calcination at 550° C. for 5 hours to obtain the nickel-based methane carbon dioxide reforming catalyst.

Embodiment 3

[0040] (1) 2.45g Ce(NO 3 ) 3 ·6H 2 O, 0.40g Ni(NO 3 ) 2 ·6H 2 O and 0.7g glycine are mixed, and add 8mL deionized water, obtain nitrate solution after stirring;

[0041] (2) Add 2.0mL silica sol to the nitrate solution, and stir to obtain the mother liquor;

[0042](3) Heat the mother liquor on a 240°C electric heating plate and evaporate to dryness until the sample undergoes a combustion reaction;

[0043] (4) Put the product obtained after combustion into a muffle furnace for calcination at 650° C. for 3 hours to obtain the nickel-based methane carbon dioxide reforming catalyst.

technical field

[0001] The invention relates to the technical field of catalyst preparation, in particular to a preparation method of a nickel-based methane carbon dioxide reforming catalyst. Background technique

[0002] methane carbon dioxide reforming reaction (CO 2 +CH 4 =2CO+2H 2 ) can convert two typical greenhouse gases, carbon dioxide and methane, into synthesis gas (CO and H 2 ), as a chemical raw material, synthesis gas is widely used in the chemical industry, so the research on methane carbon dioxide reforming reaction has attracted much attention in recent years. The development of catalysts with high activity, high selectivity and high stability is one of the key factors for the industrial application of methane carbon dioxide reforming reaction.

[0003] In the carbon dioxide reforming process of methane, the catalysts mainly include two types of catalysts with noble metals (Pd, Pt, Rh, Ru, Ir) as active centers and non-noble metals (Fe, Co, Ni) as active c...

Examples

Embodiment 1

[0030] (1) 2.36g Ce(NO 3 ) 3 ·6H 2 O, 0.32g Ni(NO 3 ) 2 ·6H 2 O and 0.6g glycine are mixed, and add 6.3mL deionized water, obtain nitrate solution after stirring;

[0031] (2) Add 1.26mL silica sol in the nitrate solution;

[0032] (3) Heat the mother liquor on a 230°C electric heating plate and evaporate to dryness until the sample undergoes a combustion reaction;

[0033] (4) Put the product obtained after combustion into a muffle furnace for calcination at 600° C. for 4 hours to obtain the nickel-based methane carbon dioxide reforming catalyst.

Embodiment 2

[0035] (1) 2.36g Ce(NO 3 ) 3 ·6H 2 O, 0.12g Ni(NO 3 ) 2 ·6H 2 O and 0.6g glycine are mixed, and add 10mL deionized water, obtain nitrate solution after stirring;

[0036] (2) Add 1 mL of silica sol to the nitrate solution, and stir to obtain the mother liquor;

[0037] (3) Heat the mother liquor on a 220°C electric heating plate and evaporate to dryness until the sample undergoes a combustion reaction;

[0038] (4) Put the product obtained after combustion into a muffle furnace for calcination at 550° C. for 5 hours to obtain the nickel-based methane carbon dioxide reforming catalyst.

Embodiment 3

[0040] (1) 2.45g Ce(NO 3 ) 3 ·6H 2 O, 0.40g Ni(NO 3 ) 2 ·6H 2 O and 0.7g glycine are mixed, and add 8mL deionized water, obtain nitrate solution after stirring;

[0041] (2) Add 2.0mL silica sol to the nitrate solution, and stir to obtain the mother liquor;

[0042](3) Heat the mother liquor on a 240°C electric heating plate and evaporate to dryness until the sample undergoes a combustion reaction;

[0043] (4) Put the product obtained after combustion into a muffle furnace for calcination at 650° C. for 3 hours to obtain the nickel-based methane carbon dioxide reforming catalyst.

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