Method for preparing nickel-tungsten bimetallic carbide catalyst by organic-inorganic hybrid route and application of nickel-tungsten bimetallic carbide catalyst
A bimetallic carbide and catalyst technology, which is applied in the direction of catalyst activation/preparation, hydrocarbon production from oxygen-containing organic compounds, physical/chemical process catalysts, etc., can solve the problem of reducing catalyst active sites, limiting carbide materials, and polymer carbon Pollution and other issues, to achieve the effect of optimistic industrial application prospects, simple operation, and energy-saving product particles
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[0023] Example 1
[0024] 0.43g of melamine (C 3 N 3 (NH 2 ) 3 ) And 1g ammonium metatungstate ((NH 4 ) 6 H 2 W 12 O 40 ·NH 2 O) Add 150 mL of deionized water and heat to 70°C under magnetic stirring. After the melamine and ammonium metatungstate are completely dissolved, the temperature is increased to 90°C, and a white milky liquid is slowly formed. Keep stirring at 90°C for 12 hours, and then collect the white precipitate from the suspension by centrifugation, and wash with deionized water and ethanol After several times, it was dried in an oven at 80° C. for 24 hours to obtain an ammonium metatungstate-melamine hybrid.
[0025] 0.75g Ni(NO 3 ) 2 ·6H 2 O was dissolved in 1.6 mL of water, and then added dropwise to a tube containing 1 g of hybrid, sonicated for 30 minutes, and then dried at 90°C for 24 hours. Thus, an organic-inorganic hybrid containing an atomic ratio W:Ni=1 is obtained.
[0026] The ammonium metatungstate-melamine hybrid (1 g) containing nickel nitrate was plac...
Example Embodiment
[0027] Example 2
[0028] Put 4.3g melamine (C 3 N 3 (NH 2 ) 3 ) And 20g sodium metatungstate ((NH 4 ) 6 H 2 W 12 O 40 ·NH 2 O) Add 3050 mL of deionized water and heat to 70°C under magnetic stirring. After the melamine and ammonium metatungstate are completely dissolved, the temperature is increased to 80°C, and a white milky liquid is slowly formed. Keep the temperature at 80°C and keep stirring for 24 hours, and then collect the white precipitate from the suspension by centrifugation, and wash it with deionized water and ethanol After several times, it was dried in an oven at 80° C. for 24 hours to obtain an ammonium metatungstate-melamine hybrid.
[0029] 0.375g Ni(NO 3 ) 2 ·6H 2 O was dissolved in 1.6 mL of water, then added dropwise to a tube containing 1 g of hybrid, treated with ultrasound for 50 minutes, and then dried at 90°C for 24 hours. Thus, an organic-inorganic hybrid containing an atomic ratio W:Ni=2 is obtained.
[0030] The ammonium metatungstate-melamine hybrid (...
Example Embodiment
[0031] Example 3
[0032] Put 1g of melamine (C 3 N 3 (NH 2 ) 3 ) And 0.2g ammonium metatungstate ((NH 4 ) 6 H 2 W 12 O 40 ·NH 2 O) Add 150 mL of deionized water and heat to 60°C under magnetic stirring. After the melamine and ammonium metatungstate are completely dissolved, the temperature is raised to 95°C, and a white milky liquid is slowly formed, kept at 95°C and kept stirring for 6 hours, and then the white precipitate is collected from the suspension by centrifugation, and washed with deionized water and ethanol After several times, it was dried in an oven at 80° C. for 24 hours to obtain an ammonium metatungstate-melamine hybrid.
[0033] 0.1875g Ni(NO 3 ) 2 ·6H 2 O was dissolved in 1.6 mL of water, and then added dropwise to a tube containing 1 g of hybrid, sonicated for 90 minutes, and then dried at 90°C for 24 hours. Thus, an organic-inorganic hybrid containing an atomic ratio W:Ni=4 was obtained.
[0034] The ammonium metatungstate-melamine hybrid (1 g) containing nicke...
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