Synthesis of Nopol over MCM-41 Catalysts.

Nopol synthesis over Sn-MCM-41. The effect of solvent and Sn precursor

Introduction Nopol is an unsaturated alcohol useful for the synthesis of fragrances, pesticides and household products [1]. It has been traditionally obtained by condensation of β-pinene and paraformaldehyde at high temperatures or using homogeneous Lewis acid catalysts [2]. Recently, heterogeneous catalysts: FePO4, Sn-MCM-41 and Zn-Al-MCM-41, have been reported for nopol synthesis under mild c...

decomposition of NO over zeolite and MCM-41 molecular sieve supported catalysts

Real-Time Raman Monitoring during Photocatalytic Epoxidation of Cyclohexene over V-Ti/MCM-41 Catalysts

A series of Vand/or Ti-loading MCM-41 catalysts are successfully synthesized with a hydrothermal method. The photocatalytic and thermal epoxidations of cyclohexene in the presence of tert-butyl hydroperoxide (t-BuOOH) were investigated with real-time monitored by NIR-Raman spectroscopy. It suggests that both Vand Ti-loading can be responsible for the cyclohexene epoxidation. Moreover, the compl...

Synthesis Characterization and Catalytic Evaluation of Mesoporous Fe-MCM-41 and Si-MCM-41 Materials

Environmental concern associated with safe handling disposal of corrosive mineral acids such as HF have encouraged the development of safer and non waste producing alternative for application in catalysis. In this sense ,mesoporous materials attracted much attention of catalysis to transform big molecules into its useful products. In the present study we have synthesized, mesoporous Fe-MCM-41an...

Synthesis of Single Walled Carbon Nanotubes Using Cobalt Grafted on MCM-41 Catalysts

In this work single walled carbon nanotubes (SWNT) have been synthesized by high pressure CO disproportionation using cobalt grafted on MCM-41 by means of grafting method employing cobalt (II) acetylacetonate. The reduction temperature of the metal species of these catalysts and their physical properties characterized by XRD, nitrogen physisoption and temperature reduction programmed are compar...