Table 9. Condensation of Acetone to Mesityl Oxide.
Entry | T ( °C) | P (bar) | Reactor | Time | Catalyst | Conv (%) | Sel (%) | Yield (%) | Ref |
---|---|---|---|---|---|---|---|---|---|
1 | RT | batch | n.a. | H2SO4,conc. | 25.0 | (106) | |||
2 | RT | batch | 12 h | POCl3 | 17.5 | (106) | |||
3 | Reflux | H3PO4 | 100 | (106) | |||||
4 | RT | batch | 21 d | HClanhydr. | 75.0 | (106) | |||
5 | RT | batch | n.a. | AlCl3 | 62.0 | (106) | |||
6 | 150 | batch | 5 h | BeCl3 | 19–27 | (106) | |||
7 | 0–10 | batch | 16 h | ZnCl2 | 49.1 | (106) | |||
8 | RT | batch | 0.8 h | SiCl4 on Zn | 60 | 25.9 | (106) | ||
9 | 110 | 6 | Batch/continuous | n.a. | Sulfonic cation exchanger | 27.1 | 6.6 | (106) | |
10 | 55 | Fixed-bed | 20–40 min contact time | Anion exchange resin | 55.0 | (106) | |||
11 | 120 | Fixed-bed | Pd-Zn over Zr phosphate | 33.4 | (106) | ||||
12 | 550 | Fixed-bed | LHSV 0.1–5.0 h–1 | ZnO | 15.0 | (106) | |||
13 | 450 | Adiabatic | LHSV 0.7 h–1 | 82% ZnO–18% ZrO2 | 77.2 | 17.9 | (106) | ||
14 | 370 | Fixed-bed | LHSV 0.5 h–1 | MgO–CaCO3–SiO2 (27.5:70.5:2.0) | 71.7 | 7.1 | (106) | ||
15 | 100 | 2.7 | Fixed-bed | γ-Alumina | 78.2 | 13.0 | (106) | ||
16 | 255 | Fixed-bed | Al2O3–MoO3 | 18.4 | 9.5 | (106) | |||
17 | 300 | Fixed-bed | LHSV 0.3 h–1 | ZnO–Cr2O3 with Fe2O3 | 87.7 | 14.2 | (106) | ||
18 | 280 | Fixed-bed | ZnO–Cr2O3–CaO–Fe2O3 | 80.9 | 9.8 | (106) | |||
19 | 120 | Batch | 1 h | ZrO2 | 28.1 | (106) | |||
20 | 200 | Batch | 2 h | ZrO2–Cr2O3 | 15.5 | (106) | |||
21 | 120 | 20 | Fixed-bed | Zr phosphate + ZnCl2 | 98 | 19.9 | (106) | ||
22 | 500 | Fixed-bed | 1000 h–1 | Pd on MgO | 38.5 | (106) | |||
23 | 350–450 | Fixed-bed | MgO (94%)–V2O5 (6%) | 11.4 | (106) | ||||
24 | 100 | 3 | Batch | 0.5 h | KOH | 11.8 | (106) | ||
25 | 115 | 5 | Batch | 4 h | Group IV metal phosphates | 99.0 | (106) | ||
26 | 115 | 5 | Fixed-bed | LHSV 4.0 h–1 | Titanium phosphate | 98.3 | 10.0 | (106) | |
27 | 120 | 4.3 | Batch | 1 h | Ti, Zr, Hf, Sn phosphate | 95.3 | 28.1 | (106) | |
28 | 250 | 100 | Batch | 12 h | NH4Cl, NH4Br | 38.8 | 8.3 | (106) | |
29 | 300 | 1 | Flow Reactor | 1.2 h–1 | Al2O3 | 59 | 20 | 12 | (113) |
30 | Mg0.7AlO | 72 | 17 | 12 | (113) | ||||
31 | Mg1.0AlO | 78 | 7 | 5 | (113) | ||||
32 | Mg3.5Al0 | 68 | 10 | 5 | (113) | ||||
33 | Mg6.5AlO | 58 | 12 | 7 | (113) | ||||
34 | MgO | 39 | 71 | 28 | (113) | ||||
35 | 300 | 1 | Flow Reactor | 1.19 h–1 | MgO | 16.9 | 67 | (114) | |
36 | Ca/MgO | 17.9 | 66 | (114) | |||||
37 | Sr/MgO | 16.2 | 68 | (114) | |||||
38 | Ba/MgO | 17.4 | 67 | (114) | |||||
39 | Li/MgO | 14.2 | 49 | (114) | |||||
40 | Na/MgO | 14.8 | 70 | (114) | |||||
41 | K/MgO | 13.5 | 71 | (114) | |||||
42 | Cs/MgO | 12.6 | 71 | (114) | |||||
43 | 210 | Flow Reactor | Mo2N | 25 | 49 | (111) | |||
44 | USY zeolite | 25 | 60 | ||||||
45 | 150 | Batch | Sulfated zirconia | 34 (1 h) | 100 | (115) | |||
68 (3 h) | 82 | ||||||||
83 (9 h) | 49 |