Supported solid alkali catalyst for synthesis of propylene glycol
A solid base catalyst, propylene glycol ether technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, organic chemistry, etc., can solve problems such as equipment corrosion and product post-treatment process complexity, and achieve Low cost, simple preparation method, and easy-to-obtain raw materials
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Embodiment 1
[0020] Roast magnesium oxide, calcium oxide, zinc oxide, and zirconium oxide at 400°C for 3 hours, then press KNO 3 15%, MgO, CaO, ZnO, ZrO 2 Impregnation of magnesium oxide, calcium oxide, zinc oxide, zirconium oxide into KNO for a composition (weight percent) of 85% 3 In the solution, vacuumize, stand still for 12 hours, dry at 120°C, and activate at 600°C for 5 hours to obtain the catalyst KNO 3 / MgO, KNO 3 / CaO, KNO 3 / ZnO, KNO 3 / ZrO 2 , respectively denoted as catalysts A, B, C, D.
Embodiment 2
[0022] Prepare the catalyst according to the same conditions as in Example 1, except that the loaded substance is changed to potassium fluoride to obtain catalyst KF / MgO, KF / CaO, KF / ZnO, KF / ZrO 2 , respectively denoted as catalysts E, F, G, H.
Embodiment 3
[0024] According to the ratio of magnesium oxide and zinc oxide each accounting for 50% when MgO-ZnO is formed, magnesium nitrate and zinc nitrate are made into a mixed salt solution, and 20% ammonia water is used as a precipitant for reaction, filtered, washed, and the filter cake is dried at 120 ° C. , and then baked at 400 ° C for 3 hours to obtain MgO-ZnO.
[0025] All the other prepare catalyst KNO according to the same conditions of embodiment 1 3 / MgO-ZnO, denoted as catalyst I.
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