Synthesis and Characterization of Magnesium Hydroxide & Cerium Oxide Composite: Application in Organic Transformation

Abstract

A new catalytic route was established for oxidation of alcohols, imines formation, and knoevenagel condensation. Magnesium hydroxide and cerium oxide composite was synthesized using co-precipitation method and was employed in various organic transformations like oxidation, imines formation and knoevenagel condensation. Magnesium hydroxide and cerium oxide composite was characterized by fourier-transform Infrared (FT-IR), X-ray diffraction (XRD), scanning electron microscope (SEM) techniques. The effect of temperature, amount of catalyst, different solvents, and time-course were performed to find out the optimization condition for these three organic transformations. Results and Discussion Characterization of catalystsNickel cerium hydroxide (NiCe-HD), cobalt cerium hydroxide (CoCe-HD), mixed magnesium hydroxide and ceria (MgCe-HDO) and zinc ferric hydroxide (ZnFe-HD) were prepared using the co-precipitation method and were characterized with IR, XRD [a] R.

Synthesis and characterization of bis nitrato[4-hydroxyacetophenonesemicarbazone) nickel(II) complex as ionophore for thiocyanate-selective electrode

“…The general procedure was used to prepare the electrode as reported earlier [11,12,20]. A thiocyanate selective polymeric membrane electrode was prepared by dissolving the mixture of fixed amount of ionophore, PVC powder, plasticizer and cation additive in the w/w ratio of 4% ionophore, 31% PVC, 63% NPOE and 2% TOMAC in 5 mL of THF.…”

Successive oxidation–condensation reactions using a multifunctional gold-supported nanocomposite (Au/MgCe–HDO)

“…310), which agreed with the previously reported XRD data of the MgCe-HDO nanocomposite. 41 The XRD pattern shows no characteristic peak for gold in the nanocomposite. The presence of gold (Au) in the catalyst is confirmed by XPS, SEM and SEM-EDS.…”

“…MgCe-HDO was prepared via the sol-gel method using Na 2 CO 3 Á10H 2 O (30 mmol), NaOH (70 mmol), Mg(NO 3 ) 2 Á6H 2 O (30 mmol), Ce(NO 3 ) 3 Á6H 2 O (10 mmol) and water, which was reported by us previously. 41…”

Development of bioactive 2-substituted benzimidazole derivatives using an MnOx/HT nanocomposite catalyst

“…Similarly, hydrotalcite-like compounds are known for their basic behaviour and are used as a support for the nanoparticles of various metals and metal oxides. 39–45…”