Alsalahi W, Tylus W, Trzeciak A M
Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland.
Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27 St., 50-370 Wroclaw, Poland.
Dalton Trans. 2021 Aug 4;50(30):10386-10393. doi: 10.1039/d1dt01842f.
Pd/ZrO2 and PdO/ZrO2 composites, containing Pd or PdO nanoparticles, were prepared using an original one-step methodology. These nanocomposites catalyze the hydrogenation of acetophenone (AP) at 1 bar and 10 bar of H2 in an aqueous solution. Compared to unsupported Pd or PdO nanoparticles, a remarkable increase in their activity was achieved as a result of interaction with zirconia. An unsupported PdO hydrogenated AP mainly to ethylbenzene (EB), while excellent regioselectivity towards 1-phenylethanol (PE) was obtained with PdO/ZrO2 and it was preserved during recycling. Similarly, regioselectivity to PE was higher with Pd/ZrO2 compared to unsupported Pd NPs. PdO and zirconia resulted in high selectivity to alcohols in the hydrogenation of substituted acetophenones.
采用一种原创的一步法制备了含有钯或氧化钯纳米颗粒的Pd/ZrO₂和PdO/ZrO₂复合材料。这些纳米复合材料在水溶液中，于1巴和10巴氢气压力下催化苯乙酮（AP）的氢化反应。与无载体的钯或氧化钯纳米颗粒相比，由于与氧化锆相互作用，其活性显著提高。无载体的氧化钯将AP主要氢化为乙苯（EB），而PdO/ZrO₂对1-苯乙醇（PE）具有优异的区域选择性，并且在循环使用过程中得以保持。同样，与无载体的钯纳米颗粒相比，Pd/ZrO₂对PE的区域选择性更高。在取代苯乙酮的氢化反应中，氧化钯和氧化锆对醇类具有高选择性。
