نتایج جستجو برای: epoxidation of alkenes

تعداد نتایج: 21164396  

Journal: :Journal of the Indian Chemical Society 2021

The new cis-dioxomolybdenum (VI) complexes [MoO2(L2)(H2O)] (2) and [MoO2(L3)(H2O)] (3) containing the tridentate hydrazone-based ligands (H2L2 = N'-(3,5-di-tert-butyl-2-hydroxybenzylidene)-4-methylbenzohydrazide H2L3 N'-(2-hydroxybenzylidene)-2-(hydroxyimino)propanehydrazide) have been synthesized characterized via IR, 1H 13C NMR spectroscopy, mass spectrometry, single crystal X-ray diffraction...

Journal: :Chemical synthesis 2022

The photocatalytic process employing nanostructured semiconductor materials has attracted great attention in energy production, CO2 reduction, and water/air purification for decades. Recently, applying heterogeneous photocatalyst the synthesis of valuable chemicals is gradually emerging considered as a promising conversion cheap resources (i.e., biomass derivatives, polyols, aromatic hydrocarbo...

Journal: :Journal of CO2 utilization 2023

The development of efficient catalysts that include the advantages homogeneous and heterogeneous is a challenge can be achieved with metal-organic frameworks (MOFs) since they incorporate different functionalities in their structure make them promising for processes. Herein, two new isoreticular nitrogen-rich naphthalene cobalt-MOFs, Co-NDTz Co-NDPhTz, were successfully prepared under solvother...

Parvaneh Pakravan Shahla Masoudian

Iron (III) meso-tetrakis(p-sulfonatophenyl)-β-octabromoporphyrin supported on Amberlite IRA- 400 [Fe(Br8 TPPS)-Ad-400] is a robust and efficient catalyst for oxidation of alkenes and alcohols at room temperature. The catalyst exhibits a high activity and stability in hydrocarbon oxidation by H2 O2 . The method was useful in the oxidation of various primary, secondary-aliphatic, alicyclic and ar...

   Mo-doped SnO2 nanoparticles were prepared using hydrothermal method. The average grain size obtained by varying calcinations temperature from 160 to 500 oC showed the different sizes. Prepared materials characterized by X-Ray diffraction (XRD) and scanning electron microscopy (SEM). Also the FTIR and the UV–Vis absorptive spectra have been carried out. Mo- doped SnO...

2014
Angel T. Martínez Francisco J. Ruiz-Dueñas Christiane Liers René Ullrich Martin Hofrichter

Most industrial enzymes are hydrolases, such as glycosidases and esterases. However, oxidoreductases have an unexploited potential for substituting harsh (and scarcely selective) chemical processes. A group of basidiomycetes are the only organisms degrading the aromatic lignin polymer, enabling the subsequent use of plant polysaccharides. Therefore, these fungi and their ligninolytic peroxidase...

Ti-MCM-41 was synthesized at pH 3, 7 and 11. The titanium content was determined by AAS and found to be 4%, 3.2% and 4.5%, respectively. In order to increase the titanium content in Ti-MCM-41, Ti(IV) ions were grafted onto Ti-MCM-41 using TiCl4 in toluene and Ti(OBu)4 in ethanol. The incorporation of Ti was determined to be 28% and 30%, respectively. The oxidation of olefins such as cyclopenten...

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