Synthesis and characterization of a Mn‐Schiff base complex anchored on modified MCM‐41 as a novel and recyclable catalyst for oxidation of olefins

Abstract

Mn-Schiff base complex has been covalently attached to the surface of Mobil Composite Material No. 41 (MCM-41) using a 1,4-diisocyanatobutane (DIC-4) as a binder. The prepared heterogeneous catalyst was characterized by X-ray diffraction pattern (XRD), Brunauer-Emmett-Teller (BET), Fourier transform infrared (FT-IR) spectroscopy, X-ray fluorescence analysis (XRF), inductively coupled plasma (ICP) spectrometry and Transmission Electron Microscopy (TEM). The BET results indicated that the surface area and pore size of MCM-41 were decreased after modification. The obtained catalyst was used as a highly efficient, heterogeneous and recyclable catalyst for the oxidation of a wide range of alkenes with hydrogen peroxide (H 2 O 2 ) as a green oxidant.The effect of various parameters such as catalyst and imidazole (co-catalyst) concentration, tempreture, and reaction time on the conversion effecincy and selectivity of the reaction have been studied. The catalyst was used in five consecutive experiment without any loss of activity, confirming the success of the anchoring process and the catalyst stability.

Synthesis and catalytic applications of organo‐functionalized MCM‐41 catalyst: A review

“…However, this catalyst was used five times effectively without any harm in catalytic activity, showing negligible leaching of Mn into the M12 material. [ 75 ]…”

“…However, this catalyst was used five times effectively without any harm in catalytic activity, showing negligible leaching of Mn into the M12 material. [75] In 2018, Louloudi and co-workers developed following two approaches for the development of heterogeneous catalysts (M13 and M14) as shown in Scheme 7.…”

Functionalized MCM-41 based recyclable catalyst for the epoxidation of alkenes using tert-BuOOH

“…A widely adopted strategy to design a heterogenous catalyst is the immobilization of transition metal complexes on a suitable solid support. The reported solid supports for the immobilization are MCM-41 [25], polymer [26,27], alumina [28], SBA-15 [29],…”

Synthesis of Some New Carbazole-Metal Complexes and Their Thermal, Electronic, Spectral and Catalytic Alkene Oxidation Properties

“…Recently, a carbazole based Schiff base derivative was synthesized and used for detection of HSO4-ion in aqueous medium [26]. In addition above all, many different metal coordination compounds of different Schiff bases have been and are still being used in various kinds of oxidation reactions of both saturated and unsaturated hydrocarbons [27][28][29].…”