Preparation and application of ZnFe2O4@SiO2–SO3H, as a novel heterogeneous acidic magnetic nanocatalyst for the synthesis of tetrahydrobenzo[b]pyran and 2,3-dihydroquinazolin-4(1H)-one derivative

l-Methionine-Zr complex supported on magnetic ZnFe2O4 as a novel, green, and efficient heterogeneous magnetic nanocatalyst for the synthesis of 1H-tetrazole and polyhydroquinoline derivatives

“…Moreover, X-ray mapping analysis of the recovered catalyst was carried out to study the physical stability of the magnetic nanoparticles during the reaction (Fig. 5 (10)(11)(12)(13)(14)(15)(16)(17)(18)). The ordered distribution of Zn, Fe, C, Si, S, N, O, and Zr on the spent catalyst surface shows the high stability of the prepared catalyst under the reaction conditions.…”

“…9 Nowadays, due to the tedious recycling of heterogeneous catalysts via filtration and the inevitable loss of solids in the recovery process, magnetic nanoparticles have been developed as suitable alternatives for catalytic reactions. [10][11][12] In catalytic studies, the recovery and reusability of the catalyst due to its adaptability to the environment are important features of the catalytic process that have received much attention in recent years. [13][14][15] Recently, the use of magnetic nanoparticles as a catalytic support in the preparation of nanocatalysts via green methods has been considered by scientific researchers.…”

Simple Synthesis of Novel Cr-EDTA-MOF: A Green, Reusable, and Versatile Catalyst for the Production of Biodiesel Fuel from Oleic Acid and Palmitic Acid

“…Biodiesel can be used as a green fuel in engines in pure form or mixed with diesel in different ratios in compression combustion engines. , Transesterification of pure triglycerides, which are mainly found in expensive feedstocks such as vegetable oils, has been one of the most useful and widely used methods to produce biodiesel based on free fatty acids. − In recent years, many countries have emphasized and encouraged the use of alternative green fuels such as biodiesel fuel by governmental pathways by means of both incentives and prescriptive volumetric necessities . Biodiesel has been generally regarded as the most promising alternative fuel in comparison to petroleum-based diesel owing to its nontoxic, − sulfur-free, and biodegradable . Despite many efforts, to compete with fossil fuels, the cost of biodiesel production is a challenge for the stages of industrialization and commercialization of this green fuel .…”

Fe3O4 Nanoparticles Catalyzed Tandem Synthesis of Fluorescent 3‐(4,5‐diaryl‐1H‐imidazol‐2‐yl) quinoline‐2‐amines: Solvatochromic, DFT and Biological Studies

“…[9,10] Nanoparticles are intriguing for applications in industry and biomedicine and mainly in catalysis as magnetically separable catalysts. [11] Catalysts are widely used in many fields, particularly in organic synthesis. This is especially true in industrial production environments, where they enable the manufacturing of various pharmaceutical products in abundance at the minimal expense.…”

“…Advances in nanotechnology have led to a rise in the requirement for multifunctional materials, which are in high demand due to their recyclability and vast surface area [9,10] . Nanoparticles are intriguing for applications in industry and biomedicine and mainly in catalysis as magnetically separable catalysts [11] . Catalysts are widely used in many fields, particularly in organic synthesis.…”