Nitrogen-doped carbon material composite magnesium oxide loaded nickel catalyst and preparation method and application thereof
A nitrogen-doped carbon and catalyst technology, applied in physical/chemical process catalysts, organic chemical methods, chemical instruments and methods, etc., can solve problems such as high consumption, difficult separation of primary amine and imine products, unfavorable production, etc., to achieve High conversion rate and selectivity, good industrial application prospects, and easy operation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0038] A kind of preparation method of nitrogen-doped carbon material composite magnesia supported nickel (Ni / CN-MgO) catalyst, its steps are as follows:
[0039] Add nickel nitrate, magnesium nitrate, chitosan and dicyandiamide with a mass ratio of 0.2:0.6:0.2:0.6 into 10mL of water and stir to dissolve fully, wherein the mass of nickel nitrate is 0.2g, and then add 0.3mL of glacial acetic acid to it , and stirred for 20 minutes. After thorough stirring, the resulting material was dried at 100 °C to obtain a pale green precursor. The obtained precursor was pyrolyzed in nitrogen at 500 °C for 2 hours to obtain a Ni / CN-MgO catalyst. Abbreviated as Ni / CN-MgO-500. The pyrolysis process is as follows: heating to 500°C at 2°C / min in a nitrogen-filled tube furnace, and then holding the temperature for 120min.
Embodiment 2
[0041] A kind of preparation method of nitrogen-doped carbon material composite magnesia supported nickel (Ni / CN-MgO) catalyst, its steps are as follows:
[0042] Add nickel nitrate, magnesium nitrate, chitosan and dicyandiamide with a mass ratio of 0.2:0.6:0.2:0.6 into 10mL of water and stir to dissolve fully, wherein the mass of nickel nitrate is 0.2g, and then add 0.3mL of glacial acetic acid to it , and stirred for 20 minutes. After thorough stirring, the resulting material was dried at 100 °C to obtain a pale green precursor. The obtained precursor was pyrolyzed in nitrogen at 600 °C for 2 hours to obtain a Ni / CN-MgO catalyst. Abbreviated as Ni / CN-MgO-600. The pyrolysis process is as follows: heating to 600°C at 2°C / min in a nitrogen-filled tube furnace, and holding for 120min. The X-ray diffraction pattern of the catalyst is shown in figure 1 , it can be seen that the characteristic peaks of magnesium oxide appear at 2θ=36.8°, 42.8°, 62.2°, 74.5° and 78.4°, and the c...
Embodiment 3
[0044] A kind of preparation method of nitrogen-doped carbon material composite magnesia supported nickel (Ni / CN-MgO) catalyst, its steps are as follows:
[0045]Add nickel nitrate, magnesium nitrate, chitosan and dicyandiamide with a mass ratio of 0.2:0.6:0.2:0.6 into 10mL of water and stir to dissolve fully, wherein the mass of nickel nitrate is 0.2g, and then add 0.3mL of glacial acetic acid to it , and stirred for 20 minutes. After thorough stirring, the resulting material was dried at 100 °C to obtain a pale green precursor. The obtained precursor was pyrolyzed in nitrogen at 700 °C for 2 hours to obtain a Ni / CN-MgO-700 catalyst. Abbreviated as Ni / CN-MgO-700. The pyrolysis process is as follows: heating at 2°C / min to 700°C in a tube furnace with nitrogen gas, and holding for 120min.
PUM
| Property | Measurement | Unit |
|---|---|---|
| viscosity | aaaaa | aaaaa |
| degree of deacetylation | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More