one for co 2 Iron-Based Catalyst for Hydrogenation to Light Olefins and Its Application
A technology for iron-based catalysts and low-carbon olefins, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, catalyst activation/preparation, etc. The conditions of long-term stability of the reaction, etc., to achieve excellent CO2 hydrogenation catalytic performance, stable performance, and easy large-scale production
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Embodiment 1
[0036] Example 1: Preparation of iron-zinc composite oxide catalyst: First, weigh 1.6891g of ferrous chloride tetrahydrate and 1.3936g of zinc chloride and dissolve them together in a beaker containing 60mL of ethylene glycol, and stir ultrasonically under nitrogen protection Mix the mixture for 10 minutes to dissolve the raw materials and mix them uniformly; then, transfer the mixed solution to a three-necked flask, N 2 Under the atmosphere, magnetically stir and cool down to minus 9 degrees Celsius; then drop the prepared 0.2mol / L 200mL sodium carbonate solution into the above mixed solution at a rate of 1mL / min, and crystals will be slowly produced. After the dropwise addition, continue Let the precipitate age for 2 hours; the liquid precipitate mixture is filtered with a suction filter and slowly rinsed with 2000-3000mL deionized water, and then put into a vacuum oven at 60°C to dry overnight; finally, the dried precipitate is ground and put into a muffle furnace Calcining...
Embodiment 2
[0037] Example 2: Preparation of iron-copper composite oxide catalyst: First, weigh 1.6891g of ferrous chloride tetrahydrate and 1.3728g of copper chloride and dissolve them together in a beaker containing 60mL of ethylene glycol, and stir ultrasonically under nitrogen protection Mix the mixture for 10 minutes to dissolve the raw materials and mix them uniformly; then, transfer the mixed solution to a three-necked flask, and magnetically stir it under N2 atmosphere to cool down to minus 9 degrees Celsius; Drop it into the above mixture at a rate of 1mL / min, and crystals will slowly form thereupon. After the dropwise addition, continue to age the precipitate for 2 hours; filter the liquid precipitate mixture with a suction filter and slowly rinse it with 2000-3000mL deionized water before putting it in Put it into a vacuum oven at 60°C and dry overnight; finally, grind the dried precipitate and put it into a muffle furnace for calcination, raise the temperature to 500°C at a rat...
Embodiment 3
[0038] Example 3: Preparation of iron-cobalt composite oxide catalyst: First, weigh 1.6891g of ferrous chloride tetrahydrate and 1.6942g of cobalt chloride and dissolve them together in a beaker containing 60mL of ethylene glycol, and stir ultrasonically under nitrogen protection Mix the mixture for 10 minutes to dissolve the raw materials and mix them uniformly; then, transfer the mixed solution to a three-necked flask, and magnetically stir it under N2 atmosphere to cool down to minus 9 degrees Celsius; Drop it into the above mixture at a rate of 1mL / min, and crystals will slowly form thereupon. After the dropwise addition, continue to age the precipitate for 2 hours; filter the liquid precipitate mixture with a suction filter and slowly rinse it with 2000-3000mL deionized water before putting it in put into a vacuum oven at 60°C to dry overnight; finally, grind the dried precipitate and put it into a muffle furnace for calcination, raise the temperature to 500°C at a rate of...
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