Selective hydrogenation catalyst for gasoline and process
A catalyst and selective technology, used in refining to remove heteroatoms, etc., can solve the problems of loss of metal components and additives, and achieve the effect of preventing the loss of alkali metals, good selectivity, and enhanced adaptability
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Embodiment 1
[0019] The specific surface area of 200g is 362m 2 The silicon-containing and phosphorus-containing (phosphorus content is 1.9%) alumina carrier with a pore volume of 0.76ml / g is placed in a spray-soaked rolling pan. Spray 190ml of aqueous solution containing 12.5g of potassium nitrate in chemical method. After the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 18 hours, dry at 110°C for 3 hours, and then increase the temperature at a rate of 200°C / hour. Bake at 450°C for 2 hours. Weigh it and place it in a rolling pan. Dissolve 7.6g of citric acid in 170ml of clean water, add 5.2g of cobalt carbonate, boil to dissolve, after cooling, add 25% ammonia water to 170ml, add 11.5g of ammonium molybdate to the above solution, dissolve it with 25% ammonia water The volume of the solution was adjusted to 200ml, and it was kept airtight. Use 193ml of molybdenum and cobalt ammonium solution for spray immersion. After the solution is spr...
Embodiment 2
[0021] The carrier formed by extruding 200g of dry glue alumina with a large specific surface area has a specific surface area of 266m 2 / g, the pore volume is 0.61ml / g, put it in the spraying and dipping rolling pot, and under the condition of rotation, spray 154ml of aqueous solution containing 16.6g of potassium dihydrogen phosphate into the alumina carrier in the rolling pot in an atomized manner, and the solution After spraying, continue to rotate in the rolling pan for 30 minutes, then place it for 18 hours, dry at 110°C for 3 hours, and then rise to 450°C for 2 hours at a heating rate of 200°C / hour. Weigh it and place it in a rolling pan. Dissolve 21.1g of citric acid in 122ml of clean water, add 14.6g of cobalt carbonate, boil to dissolve, after cooling, add 25% ammonia water to 170ml, add 29.4g ammonium molybdate to the above solution, dissolve it with 25% ammonia water The volume of the solution was adjusted to 200ml, and it was kept airtight. Use 153ml of molybde...
Embodiment 3
[0023] Potassium dihydrogen phosphate is changed into 154ml containing 2.3g potassium nitrate and 24.0g containing 53w% phosphoric acid mixed aqueous solution in the embodiment 2, after solution is sprayed, continue to rotate 30 minutes in rolling pan, then place 18 hours, at 110 ℃ for 3 hours, then rise to 450 ℃ for 2 hours at a heating rate of 200 ℃ / hour. Weigh it and place it in a rolling pan. Dissolve 7.8g of citric acid in 172ml of clean water, add 5.4g of cobalt carbonate, boil to dissolve, after cooling, add 25% ammonia water to 170ml, add 8.4g ammonium molybdate to the above solution, and dissolve it with 25% ammonia water The volume of the solution was adjusted to 200ml, and it was kept airtight. Use 156ml of molybdenum and cobalt ammonium solution for spray immersion. After the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 18 hours, dry at 110°C for 3 hours, and then increase the temperature at a rate of 200°C / hour. Ca...
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