Leal-Duaso Alejandro, Favier Isabelle, Pla Daniel, Pires Elísabet, Gómez Montserrat
Department of Organic Chemistry, Faculty of Science, University of Zaragoza, Calle Pedro Cerbuna, 12, E-50009 Zaragoza, Spain.
Instituto de Síntesis Química y Catálisis Homogénea (ISQCH-CSIC). Faculty of Science, University of Zaragoza, Pedro Cerbuna, 12, E-50009 Zaragoza, Spain.
ACS Sustain Chem Eng. 2021 May 17;9(19):6875-6885. doi: 10.1021/acssuschemeng.1c01694. Epub 2021 Apr 30.
Twenty-one green solvents, including glycerol-derived ethers, and their eutectic mixtures with two renewable ammonium salts, were used for the straightforward synthesis, stabilization, and immobilization of palladium nanoparticles (Pd NPs). The nature of the solvent allows tuning of the characteristics and properties of resulting catalytic systems in terms of particle size and morphology, stability, reactivity, and recoverability. Pd NPs immobilized in glycerol-based solvents were applied in the catalytic hydrogenation of alkenes, alkynes, and carbonyl compounds, as well as in the selective semihydrogenation of alkynes to alkenes. The optimal experimental parameters and the influence on the reactivity of the physicochemical properties of solvent, mainly the viscosity, were studied. Moreover, the most active and recoverable catalytic system, , was fully characterized both in the liquid phase and in the solid state, and its deactivation upon recovery was analyzed.
二十一种绿色溶剂，包括甘油衍生的醚类，以及它们与两种可再生铵盐的低共熔混合物，被用于直接合成、稳定化和固定钯纳米颗粒（Pd NPs）。溶剂的性质使得可以根据粒径和形态、稳定性、反应性和可回收性来调节所得催化体系的特性和性能。固定在甘油基溶剂中的钯纳米颗粒被应用于烯烃、炔烃和羰基化合物的催化氢化反应，以及炔烃选择性半氢化制烯烃的反应。研究了最佳实验参数以及溶剂的物理化学性质（主要是粘度）对反应性的影响。此外，对活性最高且可回收的催化体系在液相和固态下进行了全面表征，并分析了其回收后的失活情况。
