Preparation method for modified gamma-Al2O3 carrier for mechanical industry
A technology of mechanical industry and modification, which is applied to catalyst carriers, chemical instruments and methods, catalysts for physical/chemical processes, etc., can solve the problems of surface property defects of alumina carrier, decrease in mechanical strength, etc. Increase the effect of expanding the pore size and increasing the specific surface area
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0029] Weigh 200g of alumina monohydrate dry rubber powder, wash with water to remove impurities, and then use an airflow dryer to quickly dry to a moisture content of 35%; then soak in a mixed solution of 10% acetic acid and 5% sucrose for 1 hour; Wash with water to remove unadsorbed acetic acid and sucrose, and air-dry at 100°C to obtain modified alumina; add 4.0g KCl, 4.0ml H 3 PO 4 , and an appropriate amount of H 2 O, fully mixed, kneaded into a plastic shape and extruded into clover strips (Ф = 1.4mm). After air drying overnight, it was dried at 110°C for 2 hours.
[0030] Place the dried sample in a high-temperature furnace, raise the temperature to 200°C at a rate of 3°C per minute, and
[0031] Roasting at constant temperature for 2.0 hours. Then, the temperature was raised to 485° C. at a rate of 4° C. per minute, and was roasted at a constant temperature at this temperature for 2.0 hours, and then the temperature was raised to 600° C. at a rate of 4° C. per minu...
Embodiment 2
[0033] Weigh 200g of alumina monohydrate dry rubber powder, wash with water to remove impurities, and then use an airflow dryer to quickly dry to a moisture content of 5%; then soak in a mixed solution of 10% acetic acid and 5% sucrose for 1 hour; Wash with water to remove unadsorbed acetic acid and sucrose, and air-dry at 100°C to obtain modified alumina; add 4.0g NaCl, 4.0ml H to the modified alumina 3 PO 4 , and an appropriate amount of H 2 O, fully mixed, kneaded into a plastic shape and then extruded into clover strips (Ф = 2.4mm). After air drying overnight, it was dried at 110°C for 2 hours.
[0034] Place the dried sample in a high-temperature furnace, raise the temperature to 200°C at a rate of 3°C per minute, and
[0035] Roasting at constant temperature for 2.0 hours. Then, the temperature was raised to 485°C at a rate of 4°C per minute, and then roasted at a constant temperature for 2.0 hours at this temperature, and then the temperature was raised to 700°C at ...
Embodiment 3
[0037] Weigh 250g of alumina monohydrate dry rubber powder, wash it with water to remove impurities, and then quickly dry it with an airflow dryer to a moisture content of 5%; then soak it in a mixed solution of 10% acetic acid and 5% sucrose for 1 hour; Wash with water to remove unadsorbed acetic acid and sucrose, and air-dry at 100°C to obtain modified alumina; add 8.0g NaCl, 4.0ml H to the modified alumina 3 PO 4 , and an appropriate amount of H 2 O, fully mixed, kneaded into a plastic shape and then extruded into clover strips (Ф = 1.0mm). After air drying overnight, it was dried at 110°C for 2 hours.
[0038] Place the dried sample in a high-temperature furnace and raise the temperature to 200°C at a rate of 3°C per minute, and at this temperature
[0039]Roasting at constant temperature for 2.0 hours. Then, the temperature was raised to 485° C. at a rate of 4° C. per minute, and was roasted at a constant temperature at this temperature for 2.0 hours, and then the tem...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More