Buscar
Mostrando ítems 11-20 de 91
Immobilization of metallocene within silica–titania by a non-hydrolytic sol–gel method
(2009)
Bis(cyclopentadienyl)zirconium dichloride was immobilized within binary oxides of SiO2–TiO2 via a
non-hydrolytic sol–gel route. Different coordinatively unsaturated Ti species were identified within the
oxide structure ...
Encapsulated alizarin red species: The role of the sol–gel route on the interaction with silica matrix
(Powder Technology, 2013)
Solid acid–base sensors were prepared by encapsulating alizarin red pH indicator within a silica matrix using
the sol–gel method with four different routes: (1) non-hydrolytic, (2) acid catalyzed, (3) basic catalyzed and
(4) ...
Cagelike precursors of high-molar-mass silsesquioxanes formed by the hydrolytic condensation of trialkoxysilanes
(American Chemical Society, 2000-03-01)
High-molar-mass silsesquioxanes (SSQO) based on (3-glycidoxypropyl)trimethoxysilane (GPMS) and (3-methacryloxypropyl)trimethoxysilane (MPMS) were synthesized. The hydrolytic condensation of GPMS was performed using HCOOH ...
Catalysis and temperature dependence on the formation of ZnO nanoparticles and of zinc acetate derivatives prepared by the sol-gel route
(Amer Chemical Soc, 2003-01-16)
The chemical and structural nature of powders prepared from the zinc acetate-derived precursor using the sol-gel route is discussed. The influence of the synthesis temperature and of the hydrolytic catalyst on the structural ...
Catalysis and temperature dependence on the formation of ZnO nanoparticles and of zinc acetate derivatives prepared by the sol-gel route
(Amer Chemical Soc, 2003-01-16)
The chemical and structural nature of powders prepared from the zinc acetate-derived precursor using the sol-gel route is discussed. The influence of the synthesis temperature and of the hydrolytic catalyst on the structural ...
Poly(silsesquioxanes) derived from the hydrolytic condensation of organotrialkoxysilanes containing hydroxyl groups
(Elsevier Science Sa, 2003-12)
Organotrialkoxysilanes containing secondary hydroxyl groups were synthesized by reacting 1 mole of (3-aminopropyl)triethoxysilane (APS) with 1 or 2 mole of phenylglycidylether (PGE). Resulting products, APS-PGE and APS-PGE2, ...
Azepines from the intramolecular Prins cyclization of an aminoderivative of lapachol
(Pergamon-elsevier Science LtdOxfordInglaterra, 2002)
Peptide Synthesis Using Proteases as Catalyst
(Springer, 2018)
Proteolytic enzymes (proteases) comprise a group of hydrolases (EC 3.4, NC-IUBMB) which share the common feature of acting on peptide bonds. Proteases are among the best studied enzymes in terms of structure-function ...