Hydrotalcite-based nickel phosphide catalyst and application in conversion of guaiacol to prepare cycloalkanes
A technology of nickel catalyst and hydrotalcite, which is applied in the application field of hydrotalcite-based nickel phosphide catalyst in the conversion of guaiacol to produce naphthenes, can solve the problems of low product yield and high cost of lignin conversion, and achieve selective Strong, low price, high conversion effect
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Embodiment 1
[0048] Ni 2 P-Al 2 o 3 Preparation of:
[0049] a) Ni(NO 3 ) 2 ·6H 2 O(0.01969mol), Al(NO 3 ) 3 9H 2 O (0.00281mol) was added to 300ml of deionized water, then 0.15mol of ammonium fluoride and 0.06mol of urea were added, stirred and dissolved to form a clear solution, which was put into a polytetrafluoroethylene kettle, and the temperature was set at 100°C. 20h, react.
[0050] b) After the hydrothermal reaction is completed, a precipitate with a hydrotalcite-like structure is formed. The precipitate is suction-filtered and placed in a vacuum drying oven at a set temperature of 60° C. for 12 hours for drying.
[0051] c) Grind the dried precursor obtained in b) in a mortar to make it fine and uniform, then place it in a muffle furnace at a set temperature of 400°C for 5 hours, and bake it to form the corresponding metal oxide thing.
[0052] d) the metal oxide obtained by roasting c) in H 2 and N 2 Under the atmosphere, H 2 Flow rate: 50ml / L; N 2 The flow rate i...
Embodiment 2
[0055] Ni 2 P-Al 2 o 3 Preparation of:
[0056] a) Ni(NO 3 ) 2 ·6H 2 O(0.01125mol), Al(NO 3 ) 3 9H 2 O (0.01125mol) was added to 300ml of deionized water, then 0.15mol of ammonium fluoride and 0.075mol of urea were added, stirred and dissolved to form a clear solution, which was put into a polytetrafluoroethylene kettle, set the temperature at 150°C, and 15h, react.
[0057] b) After the hydrothermal reaction is completed, a precipitate with a hydrotalcite-like structure is formed. The precipitate is suction-filtered and placed in a vacuum drying oven at a set temperature of 60° C. for 12 hours for drying.
[0058] c) Grind the dried precursor obtained in b) in a mortar to make it fine and uniform, then place it in a muffle furnace at a set temperature of 400°C for 5 hours, and bake it to form the oxide of the corresponding metal .
[0059] d) the metal oxide obtained by roasting c) in H 2 and N 2 Under the atmosphere, H 2 Flow rate: 50ml / L; N 2 The flow rate is...
Embodiment 3
[0062] Ni 2 P-Al 2 o 3 Preparation of:
[0063] a) Ni(NO 3 ) 2 ·6H 2 O(0.018mol), Al(NO 3 ) 3 9H 2 O (0.0045mol), added to 300ml of deionized water, then added 0.003mol of ammonium fluoride and 0.375mol of urea, stirred and dissolved to form a clear solution, put it into a polytetrafluoroethylene kettle, set the temperature at 130°C, and time 17h, react.
[0064] b) After the hydrothermal reaction is completed, a precipitate with a hydrotalcite-like structure is formed. The precipitate is suction-filtered and placed in a vacuum drying oven at a set temperature of 60° C. for 12 hours for drying.
[0065] c) Grind the dried precursor obtained in b) in a mortar to make it fine and uniform, then place it in a muffle furnace at a set temperature of 500°C for 5 hours, and bake it to form the oxide of the corresponding metal .
[0066] d) the metal oxide obtained by roasting c) in H 2 and N 2 Under the atmosphere, H 2 Flow rate: 100ml / L; N 2 The flow rate is 100ml / L, t...
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