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صفحه اصلی
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اولین کنفرانس ملی شیمی، نانو مواد، پلیمر- چالش ها و کاربردها
Copper supported on metformin-functionalized rice husk-derived nano-silica as a catalyst for organic transformations
نویسندگان :
Pouya Taheri (دانشگاه مازندران) , Mahmood Tajbakhsh (دانشگاه مازندران)
کلمات کلیدی :
Rice husk silica،Agricultural Waste،Biginelli reaction،Surface modification،Catalysis
چکیده :
Agricultural waste such as rice husk (RH) is primarily burned or discarded, which is problematic for human health and the environment in particular in poor and developing countries [1]. Comparing with commercial nano-silica, the extraction of amorphous silica from rice husk ash (RHA) is cost-effective, offering a substitute for the existing high-energy procedures. The high surface area of rice husk ash makes it an excellent catalyst and support material for catalysis [2]. Various synthesis methods have been reported for preparing mesoporous silica from rice husk. In this study, the efficient copper-immobilized metformin functionalized SiO2 nanoparticles extracted from RH were prepared. Using the Biginelli reaction, this catalyst was studied as an effective, recoverable, economically viable, eco-friendly, and stable catalyst for dihydropyrimidinone synthesis. Herein, the RHA silica showed excellent catalytic activity compared to the copper supported on metformin-functionalized commercial-grade nano SiO2 in terms of reaction rate and yield.
لیست مقالات
ثمین همایش، سامانه مدیریت کنفرانس ها و جشنواره ها - نگارش 34.5.2