Biobased furanics like 5-hydroxymethylfurfural (5-HMF) are interesting platform chemicals for the synthesis of biofuel additives and polymer precursors. 5-HMF is typically prepared from C6 ketoses like fructose, psicose, sorbose and tagatose. A known byproduct is 2-hydroxyacetylfuran (2-HAF), particularly when using sorbose and psicose as the reactants. We here report an experimental and kineti...

Methyl acetate is produced through catalytic esterification of acetic acid with methanol. Catalytic acceleration is induced by sulfuric acid or ion exchange resins respectively. Acceptable product yield is obtained by reactive distillation. Separation and isolation of methyl acetate has to overcome two azeotropes (methyl acetate – water and methyl acetate methanol). Scope of this project has be...

Ionic liquids are composed of an organic cation and a highly delocalized perfluorinated anion, which remain tight to each other neutral across the extended liquid framework. Here we show that n-alkanes in millimolar amounts enable sufficient ion charge separation release innate acidity ionic catalyze industrially relevant alkylation phenol, after generating homogeneous, self-stabilized, surfact...

Two ultrathin ZnTi-LDH nanosheets with different thickness (1.4 and 4.0 nm) were prepared to study the interplay between active site catalytic performance in photocatalytic synthesis of N-benzylideneanilline via a tandem reaction. nanosheet possesses dual isolated sites including coordinatively unsaturated Ti atoms (Lewis acid sites) H OH groups (Brönsted sites), achieving activation benzyl alc...

The kinetics of hydrogen exchange between the molecules of propane-d8, propane-1,1,1,3,3,3-d6, propane-2,2-d2, and Brönsted acid sites of the zeolite H-ZSM-5 have been monitored in situ by 1H MAS NMR spectroscopy in the temperature range of 230–280 ◦C. The intramolecular hydrogen transfer was estimated by in situ 13C MAS NMR spectroscopy of the kinetics of 13C-label scrambling in adsorbed propa...

In this work, surface properties evaluated by catalytic conversion of isopropanol and ammonia Temperature Programmed Reduction (NH3-TPD) over ferrite spinel nanoparticles was investigated. Bulk NiFe2O4 with specific area 114 m2/g crystallites size 6 nm prepared hydrothermal synthesis using nitrates as precursors. X-ray diffraction (XRD), Raman spectroscopy, B.E.T, Scanning Electron Microscopy (...

The investigation on the modification of NaY zeolite on LaHY and AEHY (AE refers Ca and Sr and the molar ratio of Ca and Sr is 1:1) zeolites was proformed by XRD, N2-physisorption (BET), XRF, XPS, NH3-TPD, Py-IR, hydrothermal stability, and catalytic cracking test. These results indicate that HY zeolite with ultra low content Na can be obtained from NaY zeolite through four exchange four calcin...

The present paper should be considered as a review of the application of Fourier Transform Infra-Red for surface clay characterization. The application of surface clay materials for water treatment, oil adsorption, excipients or as active in drugs has largely increased these recent years. The surface clay material presents hydroxyl groups, which can link very easily water molecules. These hydro...