Acidity and Characterization of 12-Tungstophosphoric Acid Supported on Silica-Alumina
نویسندگان
چکیده
منابع مشابه
Tungstophosphoric Acid Supported on Silica-encapsulated γ-Fe2O3 Nanoparticles Catalyzed Oxidative Amidation
We have used tungestophosphoric acid to catalyze oxidative amidation reaction from benzyl alcohols and methylarens with hydrochloride salts of amines. To achieve this purpose, modified magnetic nanoparticles (γ-Fe2O3@SiO2@H3PW12O40) were applied as catalyst and TBHP as external oxidant. After optimizing, different derivates of be...
متن کاملtungstophosphoric acid supported on silica-encapsulated γ-fe2o3 nanoparticles catalyzed oxidative amidation
we have used tungestophosphoric acid to catalyze oxidative amidation reaction from benzyl alcohols and methylarens with hydrochloride salts of amines. to achieve this purpose, modified magnetic nanoparticles (γ-fe2o3@sio2@h3pw12o40) were applied as catalyst and tbhp as external oxidant. after optimizing, different derivates of benzamides were synthesized in good yields. also, the result of two ...
متن کاملA Highly Hydrogen Permeable Silica Membrane Supported on Porous Alumina
In previous chapters, the synthesis of a highly hydrogen selective membrane formed by the deposition of a silica layer on top of a Vycor glass substrate was discussed. In this chapter, the preparation of a composite membrane using a porous alumina support is described. This membrane showed a high hydrogen permeance of the order of 10 mol m s Pa at 873 K with selectivity of hydrogen over CH4, CO...
متن کاملCharacterization of Bronze Surface Layer Formed by Microarc Oxidation Process in 12-Tungstophosphoric Acid
This paper is a brief review of our recent research into novel uses for heteropoly compounds as precursors for thin films that can be used as catalysts and materials with good optical, conductive and other characteristics. In view of this, we have chosen thin film obtained with 12-tungsphosphoric acid on aluminum substrates. In all cases, a relatively new, microarc oxidation technique has been ...
متن کاملAcid-base bifunctional catalysis of silica-alumina-supported organic amines for carbon-carbon bond-forming reactions.
Acid-base bifunctional heterogeneous catalysts were prepared by the reaction of an acidic silica-alumina (SA) surface with silane-coupling reagents possessing amino functional groups. The obtained SA-supported amines (SA-NR2) were characterized by solid-state 13C and 29Si NMR spectroscopy, FT-IR spectroscopy, and elemental analysis. The solid-state NMR spectra revealed that the amines were immo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Brazilian Chemical Society
سال: 2016
ISSN: 0103-5053
DOI: 10.5935/0103-5053.20160183