a for co 2 Catalyst for cycloaddition reaction, preparation method and application thereof
A catalyst, CO2 technology, used in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as low activity and poor stability, and achieve high yield, easy separation, and low production costs. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0031] 20.0 g of urea was placed in an oxygen-nitrogen atmosphere with an oxygen content of 0.5 v%, and calcined at 500 °C for 4 h to obtain 1.0 g of carbon nitride.
[0032] 49.0 g Mg(NO 3 ) 2 .6H 2 O, 37.3 g Al(NO 3 ) 3 .9H 2 O and 3.41 g of a 50 wt% manganese nitrate solution were added to 1000 ml of deionized water to obtain Mg 2+ 、Al 3+ and Mn 2+ A salt solution with a total ion concentration of 0.3 mol / L. Combine 20.0 g NaOH and 15.9 g Na 2 CO 3 Dissolve in 1000 ml deionized water to get OH - Concentration is 0.5 mol / L, CO 3 2- Alkaline solution with a concentration of 0.15mol / L.
[0033]Take 0.7 g of carbon nitride obtained above and place it in 200 ml of deionized water, and ultrasonically disperse at 30 °C for 20 min. After the sonication is completed, the above-mentioned salt solution and alkaline solution are co-precipitated in the above-mentioned carbon nitride slurry, and the pH value of the precipitation is controlled to be 10.2, and the precipitati...
Embodiment 2
[0036] 7.0 g of melamine was placed in an oxygen-nitrogen atmosphere with an oxygen content of 1.0 v%, and calcined at 600 °C for 3 h to obtain 3.4 g of carbon nitride.
[0037] 51.3 g Mg(NO 3 ) 2 .6H 2 O, 32.24 g Fe(NO 3 ) 3 .9H 2 O and 5.8 g Zn (NO 3 ) 2 .6H 2 O was added to 250 ml deionized water to obtain Mg 2+ , Fe 3+ and Zn 2+ A salt solution with a total ion concentration of 1.2 mol / L. Combine 32.0 g NaOH and 21.2 g NaOH 2 CO 3 Dissolve in 400 ml deionized water to give OH - The concentration is 2.0mol / L, CO 3 2- Alkaline solution with a concentration of 0.5 mol / L.
[0038] Take 2.7 g of carbon nitride obtained above and place it in 300 ml of deionized water, and ultrasonically disperse at 40°C for 10 min. After the ultrasonication is completed, the above-mentioned salt solution and alkali solution are co-precipitated in the above-mentioned carbon nitride slurry, and the pH value of the precipitation is controlled to be 9.8, and the precipitation temper...
Embodiment 3
[0041] 5.0 g of melamine was placed in an oxygen-nitrogen atmosphere with an oxygen content of 1.0 v%, and calcined at 600 °C for 3 h to obtain 2.5 g of carbon nitride.
[0042] 53.1 g Mg(NO 3 ) 2 .6H 2 O, 25.0g Fe(NO 3 ) 3 .9H 2 O and 6.6 g Sr (NO 3 ) 2 Added to 300 ml deionized water to get Mg 2+ , Fe 3+ and Sr 2+ A salt solution with a total ion concentration of 1.0 mol / L. 40.3 g KOH and 24.8 g K 2 CO 3 Dissolve in 400 ml deionized water to give OH - Concentration is 1.8 mol / L, CO 3 2- Alkaline solution with a concentration of 0.5 mol / L.
[0043] Take 1.9 g of carbon nitride obtained above and place it in 300 ml of deionized water, and ultrasonically disperse at 50 °C for 10 min. After the sonication is completed, the above-mentioned salt solution and alkali solution are co-precipitated in the above-mentioned carbon nitride slurry, and the pH value of the precipitation is controlled to be 9.5, and the precipitation temperature is 50°C. After the precipitati...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More