Development of Catalytic Coating on Inner Surface of Microcapillary Reactor for Selective Hydrogenation of Acetylenic Alcohol
Доклады на конференциях
Microreactor technology for catalytic reactions in fine organic synthesis directed to solve the problems of environmental safety and control of selectivity in sequential reactions. Recently, the use of mixed metal oxide systems has been highlighted to improve the stability or/and texture of catalytic coatings.1,2 With the aim to create catalytic coatings on inner surface of microcapillary reactor for selective hydrogenation of 2-methyl-3-butyn-2-ol (MBY), modification of titania nanomaterials TixM1-xO2 (M = Ce, Zr) with embedded PdZn nanoparticles were performed by means of self-assembly.
The productivity of the microcapillary reactor after 88 hours of continuous stream increases in the series PdZn/TiO2 < PdZn/Ti0.95Ce0.05O2 < PdZn/Ti0.8Zr0.2O2. PdZn/TiO2 was the most selective to MBE (more than 96%), stable during long-term test up to 88 hours and reduction treatment. The effect of the support on the stability and reactivity of the PdZn nanoparticles can be explained by charge transfer to or from the nanoparticles.