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Immobilized palladium nanoparticles on Schiff base functionalized ZnAl layered double hydroxide: A highly stable and retrievable heterogeneous nanocatalyst towards aryl halide cyanations
Abstract In this study, a new nanocatalyst system with economical, environmental, moisture, and air-stable features was developed through immobilization of Pd nanoparticles (Pd NPs) on Schiff base-functionalized Zn-Al layered double hydroxide (ZnAl LDH-Sch). The system was named as Pd NPs@ZnAl LDH-Sch, and its structure was fully authenticated with several techniques. The catalytic potential of Pd NPs@ZnAl LDH-Sch nanocatalyst was then evaluated in the aryl halide cyanations for the fabrication of various benzonitriles using K4[Fe(CN)6]. These tests indicated that Pd NPs@ZnAl LDH-Sch nanocatalyst is tolerant against various functional groups, and the desired benzonitrile products were acquired with good to high yields within 2 h. The hot filtration experiment revealed that Pd NPs@ZnAl LDH-Sch acts heterogeneously in the reactions. Because of its heterogeneous manner, Pd NPs@ZnAl LDH-Sch was readily recovered via simple filtration and reused up to 11 successive runs by protecting its stability/durability. Moreover, it was found that the synthesized Pd NPs@ZnAl LDH-Sch nanocatalyst shows a performance in the aryl halide cyanations better than other reported catalysts.
Graphical abstract Display Omitted
Highlights A novel Pd nanocatalyst based on Schiff base-functionalized ZnAl layered double hydroxide was synthesized. Pd NPs@ZnAl LDH-Sch displayed superior activity in the cyanation of aryl halides. Pd NPs@ZnAl LDH-Sch can be reused at 11 consecutive cycles. Pd NPs@ZnAl LDH-Sch showed heterogeneous characteristic in the catalytic reactions.
Immobilized palladium nanoparticles on Schiff base functionalized ZnAl layered double hydroxide: A highly stable and retrievable heterogeneous nanocatalyst towards aryl halide cyanations
Abstract In this study, a new nanocatalyst system with economical, environmental, moisture, and air-stable features was developed through immobilization of Pd nanoparticles (Pd NPs) on Schiff base-functionalized Zn-Al layered double hydroxide (ZnAl LDH-Sch). The system was named as Pd NPs@ZnAl LDH-Sch, and its structure was fully authenticated with several techniques. The catalytic potential of Pd NPs@ZnAl LDH-Sch nanocatalyst was then evaluated in the aryl halide cyanations for the fabrication of various benzonitriles using K4[Fe(CN)6]. These tests indicated that Pd NPs@ZnAl LDH-Sch nanocatalyst is tolerant against various functional groups, and the desired benzonitrile products were acquired with good to high yields within 2 h. The hot filtration experiment revealed that Pd NPs@ZnAl LDH-Sch acts heterogeneously in the reactions. Because of its heterogeneous manner, Pd NPs@ZnAl LDH-Sch was readily recovered via simple filtration and reused up to 11 successive runs by protecting its stability/durability. Moreover, it was found that the synthesized Pd NPs@ZnAl LDH-Sch nanocatalyst shows a performance in the aryl halide cyanations better than other reported catalysts.
Graphical abstract Display Omitted
Highlights A novel Pd nanocatalyst based on Schiff base-functionalized ZnAl layered double hydroxide was synthesized. Pd NPs@ZnAl LDH-Sch displayed superior activity in the cyanation of aryl halides. Pd NPs@ZnAl LDH-Sch can be reused at 11 consecutive cycles. Pd NPs@ZnAl LDH-Sch showed heterogeneous characteristic in the catalytic reactions.
Immobilized palladium nanoparticles on Schiff base functionalized ZnAl layered double hydroxide: A highly stable and retrievable heterogeneous nanocatalyst towards aryl halide cyanations
Çalışkan, Melike (Autor:in) / Baran, Talat (Autor:in)
Applied Clay Science ; 219
28.01.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch