| Title | Double Catalyst-Catalyzed: An Environmentally Friendly Sustainable Process to Produce Methallyl Alcohol |
|---|---|
| ID_Doc | 19184 |
| Authors | Shang, FF; Chu, QY; Yang, HY; Yu, HX; Diao, TH; Wang, P; Liu, H; Wang, M |
| Title | Double Catalyst-Catalyzed: An Environmentally Friendly Sustainable Process to Produce Methallyl Alcohol |
| Year | 2020 |
| Published | Catalysis Letters, 150.0, 9 |
| Abstract | A green, sustainable process route to produce methallyl alcohol via tandem reaction concluding alpha-H oxidation, esterification and hydrolysis reaction is discussed. Pd-Au bimetallic nanocatalysts over SiO(2)mixed oxides incorporating K(2+)and Al(3+)like promoters were prepared by equivalent volume impregnation, which is using catalyzed the tandem reaction. Homo-dispered ZnO-S(2)O(8)(2-)nanoparticles supported on ZSM-5 were prepared by ultrasonic adsorption method, which is using catalyzed hydrolysis reaction. Characterization by transmission electron microscopy confirmed that alloyed Pd/Au nanoparticles with a mean diameter of 0.5 to 1.0 nm were formed. The results of X-ray diffraction confirmed that the crystal structure were Pd/Au(111). The electronic effect and geometric effect of Pd/Au significantly improved the catalytic performance. The effects of reaction pressure, temperature, and ratio of material were discussed in details. The catalytic activity of ZnO-S2O82-/ZSM-5 exhibited more excellent than H(2)SO(4)and other reported catalysts with 100% conversion and selectivity. The excellent catalytic activity of ZnO-S2O82-/ZSM-5 may be attributed to the synergistic effect from the nano-effect of ZnO-S(2)O(8)(2-)nanoparticles and the mesostructure of ZSM-5, and the pore size, number of Bronsted acid sites. The reaction temperature are critical factors affecting the catalytic activity for this system. Based on the results, a supposed mechanism of the tandem and hydrolysis reaction was proposed. Graphic Atom economic green reaction: acetyl oxidation and hydrolysis reaction. |
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