نتایج جستجو برای: magnetic heterogeneous nanocatalyst
تعداد نتایج: 462271 فیلتر نتایج به سال:
A new magnetically separable organic-inorganic nanohybrid catalyst denoted as CuFe2O4@SiO2@C3-Pyrazole-C4SO3-H2PW was successfully prepared by grafting of a functionalized ionic liquid containing a pyrazolium cation with a phosphotungstic count...
Inactivation tests of Ascaris eggs (Ae) were performed using hydrogen peroxide and a Fenton type nanocatalyst supported on activated carbon (AC) (FeOx/C). Blank inactivation tests were also carried out using H2O2 and H2O2/AC as oxidation systems. The FeOx/C nanocatalyst was synthesized through a novel hybrid method developed in this work. The method is based on the incipient impregnation techni...
In this investigation, a facile and green sonochemical route has been developed for the synthesis of 2-Ketomethylquinolines by using 2-methylquinolines and several acyl chlorides in the presence of nanocrystalline MgAl2O4 as an efficient heterogeneous catalyst. The combination of nanocatalyst and ultrasonic process afforded corresponding ketomethyl quinolines in shorter re...
This research describes application of a mesoporous nanostructured material based on basic ionic liquid anchored to silica, i.e. nano-2-(dimethylamino)-N-(silica-n-propyl)-N,N-dimethylethanaminium chloride {nano-[DMSPDE][Cl]}, as a highly effective and heterogeneous nanocatalyst for the production of 2-amino-4H-chromenes. The one-pot multi-component ...
In this research, a new magnetic nanocatalyst CuFe2O4@Si-Imid-PMo containing acidic ionic liquid based on imidazolium cation and phosphomolybdic acid anion immobilized on CuFe2O4@SiO2 magnetic nanoparticles was prepared and characterized using FT-IR, EDX, SEM, and VSM techniques. Then, the catalytic activity of CuFe2O4@Si-Imid-PMo was evaluated in the synthesis of 2,4,5-trisubstituted imidazole...
In this study, the nano-SiO2/hexamethylenetetramine as a new basic heterogeneous nanocatalyst was prepared and used for the synthesis of pyranopyrazole via the four-component reaction. Various aldehydes, hydrazine hydrate, ethyl acetoacetate and malononitrile were reacted at room temperature under solvent-free and grinding conditions. The morphology and structure of nano-cat...
بررسی کارایی CoFe2O4 با پایه گرافن در فعال سازی پراکسی مونوسولفات و حذف آموکسی سیلین از محیط های آبی
Background and purpose: Nowadays, amoxicillin is one of the most important and most frequently used antibiotics that has received especial attention as it causes resistance in bacteria. This compound enters the aquatic environment through different routes including sewage and waste disposal of medical centers, veterinary centers and industries. The aim of this study was to evaluate the performa...
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