A high-performance carbon dioxide hydromethanation catalyst and its preparation method and application
A technology for hydromethanation and carbon dioxide, applied in metal/metal oxide/metal hydroxide catalysts, carbon compound catalysts, catalyst activation/preparation, etc., can solve the complex process flow, increase equipment investment and process energy consumption , reduce the price competitiveness of product gas and other issues
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0036] Alumina-zirconia composite carrier is prepared, its weight composition is: 60% of alumina and 40% of zirconia. Take aluminum nitrate and zirconyl nitrate according to the ratio of alumina and zirconium dioxide in the carrier, add deionized water to prepare a solution with a total concentration of metal ions of 0.5mol / L; meanwhile, prepare ammonium carbonate solution with deionized water, wherein The cation concentration is 1.2mol / L. The two solutions were added dropwise into a beaker filled with an appropriate amount of deionized water in a co-current manner, and the pH value of the liquid in the beaker was controlled at 8. The precipitation process was carried out at room temperature and under stirring conditions. After the precipitation was completed, it was aged in a 60°C water bath with stirring for 1 h. The precipitate was collected and washed with deionized water to pH 7.2. The precipitate was dried at 100°C for 12 hours, and then calcined at 450°C for 4 hours....
Embodiment 2
[0041] Alumina-zirconia composite carrier is prepared, its weight composition is: 70% of alumina and 30% of zirconia. Weigh aluminum nitrate and zirconyl nitrate according to the ratio of alumina and zirconia in the carrier, add deionized water to prepare a solution with a total concentration of metal ions of 2mol / L; at the same time, use deionized water to prepare ammonium carbonate solution, in which cation The concentration is 1.5mol / L. The two solutions were added dropwise into a beaker filled with an appropriate amount of deionized water in a co-current manner, and the pH value of the liquid in the beaker was controlled at 8. The precipitation process was carried out at room temperature and under stirring conditions. After the precipitation was completed, it was aged for 3 hours in a water bath at 80°C with stirring. The precipitate was collected and washed to pH 7 with deionized water. The precipitate was dried at 80°C for 15 hours, and then calcined at 550°C for 2 ho...
Embodiment 3
[0046] Alumina-zirconia composite carrier is prepared, its weight composition is: 80% of alumina and 20% of zirconia. Take aluminum nitrate and zirconyl nitrate according to the ratio of alumina and zirconium dioxide in the carrier, add deionized water to prepare a solution with a total concentration of metal ions of 0.5mol / L; meanwhile, prepare ammonium carbonate solution with deionized water, wherein The cation concentration is 1mol / L. The two solutions were added dropwise into a beaker filled with an appropriate amount of deionized water in a co-current manner, and the pH value of the liquid in the beaker was controlled at 9. The precipitation process was carried out at room temperature and under stirring conditions. After the precipitation was completed, it was aged in a water bath at 50°C with stirring for 2 hours. The precipitate was collected and washed with deionized water to pH 7.1. The precipitate was dried at 120°C for 10 hours, and then calcined at 600°C for 5 h...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More