We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Highly efficient and recyclable novel spindles Fe<sub>2</sub>O<sub>3</sub>@SiO<sub>2</sub>/In<sub>2</sub>O<sub>3</sub> nanomagnetic catalyst designed for green synthesis of azomethine compounds.
- Authors
El-Attar, Heba G.; Salem, Mohamed A.; Ibrahim, Seham A.; Bakr, Eman A.
- Abstract
A novel and reusable nanomagnetic catalyst, Fe2O3@SiO2/In2O3, was synthesized by a facile chemical approach in three successive steps. The nanocatalyst was characterized by FT-IR, XRD, SEM, EDX, TEM, and VSM. The XRD pattern displays the characteristic peaks of Fe2O3 and SiO2, accompanied by new peaks assigned to different planes of In2O3 that confirm the formation of In2O3 on the surface of Fe2O3@SiO2 core/shell spindles. The TEM micrographs show spindle-like particles of Fe2O3 covered with SiO2 shell, and the In2O3 nanoparticles in an average diameter of 20 nm are hung on the surface of the Fe2O3@SiO2. The nanomagnetic catalyst Fe2O3@SiO2/In2O3 was used for the transformation of the (4-nitrophenyl)-1-phenyl-1H-pyrazole-5-amine, and chalcones derivatives, into valuable azomethine compounds of 3-(substituted)-1-(pyridine-2-yl)allylidene)-3-(4-nitrophenyl)-1-phenyl-1H-pyrazole-5-amine with high rate and efficient catalyst recovery. The yield obtained through the catalytic route reached 90–95% in shorter reaction times compared with uncatalyzed reaction method.
- Subjects
SUSTAINABLE design; CATALYSTS; NANOPARTICLES; CHALCONES; SCHIFF bases
- Publication
Research on Chemical Intermediates, 2023, Vol 49, Issue 2, p469
- ISSN
0922-6168
- Publication type
Article
- DOI
10.1007/s11164-022-04894-4