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Transformations of citral over bifunctional Ru-H-Y-80 extrudates in a continuous reactor
<p>One-pot transformations of citral were investigated over Ru-catalysts in a batch and a continuous mode over a powder catalyst and extrudates, respectively. Ru/H-Y-80 catalysts were prepared by different impregnation ...
Continuous synthesis of menthol from citronellal and citral over Ni-beta-zeolite-sepiolite composite catalyst
<p>One-pot continuous synthesis of menthols both from citronellal and citral was investigated over 5 wt% Ni supported on H-Beta-38-sepiolite composite catalyst at 60–70 °C under 10–29 bar hydrogen pressure. A relatively ...
Catalytic conversion of glucose to methyl levulinate over metal-modified Beta zeolites
Methyl levulinate was selectively formed from glucose and methanol over a copper modified Beta zeolite bifunctional catalyst at 180 degrees C under argon atmosphere. The selectivity to methyl levulinate substantially ...
Mono- and Bimetallic Ni-Co Catalysts in Dry Reforming of Methane
<p>Several bimetallic Ni-Co catalysts supported on theta-Al2O3 together with 10 wt % Ni and 10 wt % Co on theta-Al2O3 were prepared via the incipient wetness method, characterized by X-ray diffraction (XRD), nitrogen ...
Diffusion measurements of hydrocarbons in H-MCM-41 extrudates with pulsed-field gradient nuclear magnetic resonance spectroscopy
Mesoporous materials are promising catalysts for production of biofuels. Herein, H-MCM-41 catalysts with different concentrations of the silica Bindzil binder (10-50 wt%) were prepared and characterized using pulsed-field ...
Cascade transformations of (±)-citronellal to menthol over extruded Ru-MCM-41 catalysts in a continuous reactor
<p>Cascade transformations of (±)-citronellal in a continuous mode were investigated over a bifunctional shaped ruthenium catalyst bearing metal clusters of the size 7–13 nm. Four types of Ru/H-MCM-41 extrudates (1.5 × 10 ...
Citral-to-Menthol Transformations in a Continuous Reactor over Ni/Mesoporous Aluminosilicate Extrudates Containing a Sepiolite Clay Binder
One-pot continuous synthesis of menthols from citral was performed over 5 wt % Ni supported on a mesoporous aluminosilicate catalyst with sepiolite as a binder at 70 degrees C with a selectivity of 75% to menthols. Catalyst ...
Synthesis of Florol via Prins cyclization over heterogeneous catalysts
In this work, several heterogeneous micro- and mesoporous, acidic catalysts were tested for the selective synthesis of Florol (R), an industrial product formed via condensation and rehydration starting from isoprenol and ...
The physicochemical and catalytic properties of clay extrudates in cyclization of citronellal
<p>Four clay materials, namely, bentonite, bleaching earth, attapulgite and sepiolite, were shaped into the cylindrical body by extrusion. Clays were characterized in depth by TEM, SEM-EDX, N2 physisorption, pyridine FTIR, ...
One-Pot Transformation of Citronellal to Menthol Over H-Beta Zeolite Supported Ni Catalyst: Effect of Catalyst Support Acidity and Ni Loading
Citronellal was converted to menthol in a one-pot approach using H-Beta zeolite-based Ni catalyst in a batch reactor at 80 degrees C, under 20 bar of total pressure. The effects of H-Beta acidity (H-Beta-25 with the molar ...