Binuclear molybdenum Schiff-base complex: An efficient catalyst for the epoxidation of alkenes

Epoxidation of Podocarpus Falcatus Oil by Sulphuric Acid Catalyst: Process Optimization and Physio-chemical Characterization

“…Nevertheless, as the temperature increase from 50 to 60°C the conversion was highly increased while it was reached the design space at 60°C the percentage of conversion then starts to drop as the Process Optimization and Physio-chemical Characterization temperature tend to increase above the center limit. This indicated that as temperature increase from 50 to 60°C iodine degradation rate was increased [14], These results related to, higher rate of depletion or disappearance [16]; bond occurred due to more rapid epoxidation with the establishment and use of peroxyformic acid in the reaction [17]. From these, we conclude that the epoxidation of p. falcatus oil seemed that the free radical chain of polymerization because as soon as the reaction begins while the formation of the polymerized or epoxidized of p. falcatus.…”

Remarkable binuclear Schiff‐based complex catalyze the epoxidation of alkenes: effects of substituent group

“…The catalytic activity of the catalyst varies with the change of the substituted group connected to the benzene ring(−diethylamino> − tert‐butyl>‐H > ‐Cl). Substituent group of activated ligands, such as ‐diethylamino(95.30 ± 2 kJ·mol −1 and 7.90 × 10 10 mol −1 ·dm 3 ·s −1 ), −tert‐butyl et al , could increase the catalytic activity of the catalyst by reducing the activation energy and increasing the collision frequency of the reaction. As shown in the result, 92.00% conversion and almost 100.00% selectivity within 1 hr was obtained for DMSBC.…”

“…Moreover, Schiff base could be modified by introducing substituents on the aromatic rings to enhance/stabilize the catalytic action of the Mo complex. In the previous work, our group have designed and synthesized dimolybdenum Schiff‐base complex (DMSBC) which has high‐efficiency catalytic performance and can be used for multiple times . Herein, a series of DMSBC with different substituents are designed and synthesized to investigate the effect of functional group on the catalytic activity.…”

Asymmetrical Gemini Surfactants Directed Synthesis Of Hierarchical ZSM‐5 Zeolites and Their Immobilization of Molybdenum Complex for the Catalytic Epoxidation of Alkenes

“…The conversion of olefin and the selectivity of the obtained product were quantified by comparison with the standard additives. [52] Chemical analysis: IR spectra were obtained with a Nicolet is50 spectrometer in the range of 4000 to 400 cm À 1 . X-ray diffraction (XRD) patterns were recorded using a PANalytical X'Pert3 Powder X-ray diffractometer with Cu Kα radiation (λ = 1.5405 Å, 40 kV to 40 mA) at room temperature.…”