Green Synthesis and Characterization of Zeolite X-Palladium Nanoparticles as a Suitable Catalyst for Suzuki Coupling Reaction
- سال انتشار: 1397
- محل انتشار: بیستمین سمینار شیمی معدنی ایران
- کد COI اختصاصی: IICC20_079
- زبان مقاله: انگلیسی
- تعداد مشاهده: 482
نویسندگان
Department of Chemistry, Iran University of Science and Technology, Tehran, Narmak, Iran
Department of Chemistry, Iran University of Science and Technology, Tehran, Narmak, Iran
چکیده
Zeolites are nanoporous crystalline materials with a uniform pore size distribution on a molecular scale and with high thermal, mechanical and chemical stability [1]. Zeolites have shown their potential for several emerging applications, with exciting examples appeared in the field of heterogeneous catalysis, ion-exchange, adsorptive separation, storage and biomedical-related applications. Ultrasonic wave is a type of mechanical energy, distinguished by vibrations with a frequency greater than 20 kHz. When the ultrasonic wave interacts with a liquid, local high pressures and high temperatures are generated. There are many reports about the use of ultrasound as source energy in the synthesis of micrometer sized molecular sieves [2]. The palladium-catalyzed Suzuki coupling reaction between an aryl halide and a phenylboronic acid has been among the most powerful tools for constructing C-S, C-N and C-C bonds in organic synthesis [3]. Because biaryl moieties are used as the building block of a wide range of pharmaceuticals, herbicides, natural products, polymers, and etc [4]. In this study, a simple and green energy method, sonochemical, was applied to synthesis of zeolite X-palladium nanoparticles. The advantages of this method are applying green energy, short time synthesis, and creating regular zeolite. The structure and properties of zeolite X-palladium nanoparticles were characterized by various techniques. To investigate the performance of zeolite X-palladium nanoparticles, it was used in Suzuki coupling reaction as catalyst. The zeolite X-palladium nanoparticles showed high activity in carbon-carbon coupling reaction, and, interestingly, fluorobenzene could react with phenylboronic acid in presence of this catalyst.کلیدواژه ها
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