Solid acid catalysts based on trifluoromethanesulfonic acid (TFMS) were synthesized using two different activated carbons as supports. They were characterized by FT-IR, DTA-TGA and BET, and their acidity was measured by ...

Mesoporous titania materials have been synthesized by using urea as a template via sol–gel reactions of titaniumisopropoxide, followed by the removal of urea by extraction with water. The solid was dried, calcined at ...

Density functional theory calculations at the B3LYP/6-31G(d,p) level of theory were performed on the members of the isoelectronic series CF3SO2X (X = F, OH, NH2, CH3), in order to obtain the optimized geometric parameters ...

The 3-triethylammonium propane sulfonic (TEA-PS+) cation associated with the anion tetrafluoroborate, hydrogen sulfate or trifluoromethanesulfonate leads to the formation of the new protic ionic liquids (ILs) 3-triethylammonium ...

The main objective of the present work was to reavaluate the strategy of the use of trifluoromethanesulfonic acid (TFMSA) in the step of final cleavage of peptides from the support resin. The main reason for investing in ...

In this thesis was evaluated the synthesis of the derivate 1-benzyl-2-phenyl-1Hbenzimidazole, by the reaction between o-phenylenediamine and benzaldehyde in presence of natural clays modified with different acids and ...