مشخصات پژوهش

عنوان	Magnetic Thiaminum Octamolybdate Nanocatalyst for Oxygenation of Styrenes to Benzaldehydes and Tandem Synthesis of Benzimidazoles
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	octamolybdate, thiamine, silica-coated γ-Fe2O3, styrene oxygenation, benzimidazoles
چکیده	Silica-coated maghemite nanoparticles (γ-Fe2O3) decorated with octamolybdate-containing thiaminium (protonated vitamin B1) produced a four-component nanocatalyst (γ-Fe2O3@ SiO2/VB1/α-Mo8O26 = SMNPB1Mo). The as-prepared material with particle sizes ranging from 10 to 50 nm and a specific surface area of 57 m2/g showed high activity with a TOF of 312 h−1 and excellent selectivity for the conversion of styrenes to benzaldehydes using tert-butyl hydroperoxide as an oxidant followed by a one-pot synthesis of benzimidazoles under solvent-free conditions. A radical pathway was suggested based on scavenging experiments. The catalyst proved to be easily recoverable using a ferromagnet and usable for at least five runs while retaining its activity and structural integrity.
پژوهشگران	مریم رستمی نسب (نفر اول)، عبدالرضا رضائی فرد (نفر دوم)، معصومه جعفرپور (نفر سوم)، اکسل کلاین (نفر چهارم)