A kind of ni/nio composite material and its preparation method and application
A composite material and hexagonal technology, applied in the field of nanomaterials, can solve the problems of catalytic materials thermal decomposition performance needs to be improved, complexity, research has not been reported in the literature, etc., to achieve excellent catalytic effect, simple preparation method, and environmental friendliness Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0056] Embodiment 1, a kind of preparation method of hexagonal Ni / NiO nano-catalyst, comprises the steps as follows:
[0057] (1) Measure 0.7mL of oleic acid in a mortar, add 0.2908g (10mmol) nickel nitrate hexahydrate and 0.1200g (30mmol) sodium hydroxide successively, and grind until fully reacted; repeat the above steps for a total of 10 times, grind The time was 1.5h, and a green solid was obtained.
[0058] Total dosage in step (1): oleic acid is 7mL, nickel nitrate hexahydrate is 2.9081g, sodium hydroxide is 1.2001g, and the molar ratio of nickel nitrate hexahydrate and sodium hydroxide=1:3.
[0059] (2) The green solid obtained in step (1) was added to 65 mL of deionized water, and after fully stirring, it was transferred to the reaction kettle and reacted at 180° C. for 8 hours; the obtained precipitate was washed alternately with ethanol and deionized water for 5 hours. Second, after drying at 80 °C for 24 h, calcined in a muffle furnace at 500 °C for 2 h to obtain N...
Embodiment 2
[0067] Example 2. The Ni / NiO catalyst was prepared by the method described in Example 1, the experimental steps were unchanged, the quality of the weighed nickel nitrate hexahydrate was unchanged, and other physical quantities were changed. The difference is:
[0068]In step (1), the total amount of oleic acid was 6 mL, 1.0000 g (2.5 mmol) of sodium hydroxide was weighed, the molar ratio of nickel nitrate hexahydrate to sodium hydroxide was 1:2.5, and the grinding time was 1 h.
[0069] In step (2), 60 mL of deionized water was added, and the hydrothermal reaction was carried out at 160 °C for 9 h, followed by alternate washing with ethanol and deionized water for 4 times, dried at 75 °C for 24 h, and then placed in a muffle furnace at 450 °C. Roast for 2h.
[0070] The obtained hexagonal Ni / NiO powder has a side length of 20 nm and a thickness of 10 nm, with slight agglomeration.
[0071] The catalytic properties were tested by thermogravimetric-differential thermal method ...
Embodiment 3
[0072] Example 3. The Ni / NiO catalyst was prepared by the method described in Example 1, the experimental steps were unchanged, the quality of the weighed nickel nitrate hexahydrate was unchanged, and other physical quantities were changed. The difference is:
[0073] In step (1), the total amount of oleic acid was 8 mL, 1.4000 g (3.5 mmol) of sodium hydroxide was weighed, the molar ratio of nickel nitrate hexahydrate to sodium hydroxide was 1:3.5, and the grinding time was 2 h.
[0074] In step (2), 70 mL of deionized water was added, and the hydrothermal reaction was carried out at 200 °C for 7 h, washed with ethanol and deionized water alternately for 6 times in turn, dried at 80 °C for 24 h, and placed in a muffle furnace at 550 °C. Roast for 3h.
[0075] The obtained hexagonal Ni / NiO powder has a side length of 30 nm and a thickness of 12.5 nm, and the product is slightly agglomerated.
[0076] The catalytic properties were tested by thermogravimetric-differential therm...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More