Cobalt molybdenum catalysts supported on novel activated carbon-HZSM-5 composites with different mass ratios were prepared by wet-impregnation method and pre-sulfided CS2. Characterization of these was done using X-ray powder diffraction, Fourier transform infrared spectroscopy, N2 adsorption-desorption, scanning electron microscope analytics. Their activity for the hydrodesulfurization reactio...

In this paper, Ag/ZnO/HZSM-5ternary nanocomposites with different Ag loadings were prepared by the photo precipitation method. The prepared photocatalysts were characterized by XRD, BET, SEM and TEM. The photocatalytic activity of ZnO/HZSM-5 for 4-nitrophenol (4-NP) degradation was increased by silver doping. Effects of various parameters such as the initial concentration of 4-NP, pH and Ag loa...

Nanocrystal HZSM-5 zeolite aggregates with different SiO2/Al2O3 molar ratios were prepared under low temperature and were used to catalyze the conversion of methanol to propylene and butene. The coke location, coke content, and coke species deposited on HZSM-5 aggregates were investigated. The near-graphite carbon on the external surface of HZSM-5 zeolite (SiO2/Al2O3 molar ratio = 400) was dist...

Introduction Phenol is an important chemical in industry but has been produced from benzene by the three-steps of cumene process. Direct phenol synthesis from benzene is one of the important subjects. However, no selective catalyst with good performance in an economically and environmentally favourable benzene-O2 system has been discovered to date. We have found Re/HZSM-5 promoted the direct ph...

A series of micro-mesoporous zeolitic catalysts synthesized using recrystallization two different zeolites (HZSM-5 and beta) were impregnated with Pt other notable metals. The resulting bifunctional characterized tested for the hydrocracking a model municipal waste plastic mixture. Actual mixture same composition was also employed comparison. experiments carried out in Parr stirred batch reacto...

Naphthenic acids are naturally occurring carboxylic in crude oil with cyclic or aromatic rings their structure. These responsible for the acidity of oil, leading to corrosion problems refinery equipment and deactivation catalysts while creating a continuous need maintenance. Therefore, removing naphthenic has become an important requirement refining acidic oil. In this paper, experiments conduc...