Authors:P. V. Surse, S. Wagholikar, S. Mayadevi, and S. Sivasanker
, β-unsaturated organic acids as acylating agents is given by Castro et al. [ 5 ]. Bellussi et al. [ 6 ] have studied the liquid phase alkylation of benzene with light olefins. They have reported that H-beta is a more active catalyst than zeolite Y for
Authors:B. Dragoi, V. Rakic, E. Dumitriu, and A. Auroux
This work is focused on the gas and liquid-phase adsorption of pollutants: propanol, 2-butanone, phenol and nicotine onto
zeolites (H-BETA, H-ZSM-5, H-MCM-22, and clinoptilolite). Textural properties and origin of zeolites were taken into account
as criteria of adsorbents selection. The aldehyde and the ketone were adsorbed in the gas phase using microcalorimetry linked
to a volumetric line to evaluate adsorption. Adsorptions in water were carried out for phenol and nicotine and the evolved
heats during adsorption were measured by a differential heat flow reaction calorimeter with stirring. Results are discussed
in relation with the pore sizes and various interactions which could occur between the adsorbent and the adsorbate.
A liquid target is irradiated and a continuous gas-liquid extraction of parent123Xe is performed. After a short growth time the daughter123I is dissolved and treated for various applications. The radionuclidic purity is very high, only125I is detectable with a maximum of 0.2% to the end of the preparation process. In this production of carrier-free123Xe and123I, the major chemical problem consists of a separation into microquantities. Attempts to find a solution to various technical
problems are also described.
Authors:Szabolcs Harnos, György Onyestyák, and Dénes Kalló
nanoclusters are supported on H-ZSM-5 and H-Beta of various Si/Al ratios [ 29 ], for the conversion of the non-edible microalgae oil without competing with food production. This approach opens a new route to produce sulfur-free high grade green diesel with the