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Potassium Salt Outperforms Precious Metals As a Catalyst
Potassium Salt Precious Metals a Catalyst
2015/3/4
"We have shown for the first time that you can efficiently make carbon–silicon bonds with a safe and inexpensive catalyst based on potassium rather than ultrarare precious metals like platinum, pallad...
Highly Efficient Synthesis of Clean Biofuels from Biomass Using FeCuZnAlK Catalyst
Biomass Biofuel Higher alcohol Liquid hydrocarbon FeCuZnAlK catalyst
2012/4/5
Highly efficient synthesis of clean biofuels using the bio-syngas obtained from biomass gasi-fication was performed over Fe1.5Cu1Zn1Al1K0.117 catalyst. The maximum biofuel yield from the bio-syngas re...
Vapor phase alkylation of toluene using various alcohols over H3PO4/MCM-41 catalyst: influence of reaction parameters on selectivity and conversion
Alkylation toluene mesoporous MCM-41 vapor phase H3PO4
2010/12/20
A mesoporous MCM-41 molecular sieve material with a molar ratio of SiO2/Al2O3 = 70 and loaded with H3PO4 was used as a catalyst for the alkylation of toluene, using various alcohols, namely methanol, ...
Bromodimethylsulfonium bromide/tetrabutylammonium nitrite: an efficient catalyst mixture for the nitration of phenols
Bromodimethylsulfonium bromide nitration nitrophenol tetrabutylammonium nitrite
2010/12/3
Nitrophenols were obtained via direct nitration of phenols with tetrabutylammonium nitrite in the presence of bromodimethylsulfonium bromide at room temperature in high yields under aprotic conditions...
Bromodimethylsulfonium Bromide/ Tetrabutylammonium Nitrite: An Efficient Catalyst Mixture for the Nitration of Phenols
Bromodimethylsulfonium bromide nitration, nitrophenol tetrabutylammonium nitrite
2010/10/19
Nitrophenols were obtained via direct nitration of phenols with tetrabutylammonium nitrite in the presence of bromodimethylsulfonium bromide at room temperature in high yields under aprotic conditions...
Sulfonic acid-functionalized silica: a remarkably efficient heterogeneous reusable catalyst for the one-pot synthesis of 1,4-dihydropyridines
1,4-Dihydropyridine b-dicarbonyl compounds solid acid SiO2-R-SO3H
2010/10/19
An efficient one-pot method for the synthesis of 1,4-dihydropyridines from b-dicarbonyl compounds, aldehyde, and ammonium acetate is reported using sulfonic acid-functionalized silica at 90 °C under s...
Silica supported polyphosphoric acid (PPA-SiO2): an efficient and reusable heterogeneous catalyst for the one-pot synthesis of a -amino phosphonates
a -Amino phosphonates PPA-SiO2 heterogeneous catalyst
2010/10/19
An efficient green protocol is described for the preparation of a -amino phosphonates, employing a one-pot three-component condensation reaction between aldehydes, amines, and trialkyl phosphites in t...
An efficient one pot synthesis of 1,4-dihydropyridines using alumina sulfuric acid (ASA) catalyst
Hantzsch 1 4-dihydropyridines ASA catalyst one pot conversion
2010/4/8
An efficient synthetic method for 1,4-dihydropyridines has been developed using 3 or 4 component condensation reactions of aldehydes, 1,3-dicarbonyl compounds, and ammonium acetate in the presence of ...
One-pot synthesis of amidoalkyl naphthols using NaHSO4.SiO2 as an efficient and recyclable heterogeneous catalyst
NaHSO4.SiO2 amidoalkyl naphthol multi-component reaction heterogeneous catalyst amide
2010/4/8
An efficient synthesis of amidoalkyl naphthols using silica supported sodium hydrogen sulphate as heterogeneous catalyst under a thermal solvent-free green procedure is described. This simple protoco...
Investigation of the fuel properties of biodiesel produced over an alumina-based solid catalyst
Biodiesel fuel properties transesterification heterogeneous basic catalyst
2010/4/9
The present study investigated the transesterification process used in the production of canola oil methyl ester from canola oil and methanol over synthesized KF/Al2O3 catalysts. Different amounts of ...
H2{SO}4-silica as an efficient and chemoselective catalyst for the synthesis of acylal from aldehydes under solvent-free conditions
Acylals aldehydes catalysis solvent-free reactions
2010/4/9
A variety of aldehydes react with acetic anhydride in the presence of a catalytic amount of H2SO4-silica to afford the corresponding 1,1-diacetates (acylals) in excellent yields. Ketones are not affec...
Investigation of Biodiesel Production from Canola Oil Using Amberlyst-26 as a Catalyst
Biodiesel heterogeneous catalyst Amberlyst-26
2010/4/9
The transesterification of canola oil to fatty acid methyl esters was studied using Amberlyst-26 as a solid catalyst. The influence of reaction conditions, such as the reaction time, methanol to oil m...
Ferric Hydrogen Sulfate as an Efficient Heterogeneous Catalyst for Environmentally Friendly Greener Synthesis of 1,8-Dioxo-Octahydroxanthenes
Fe(HSO4)3 dimedone heterogeneous catalyst 1,8-dioxo-octahydroxanthene
2010/4/9
Ferric hydrogen sulfate was used as an environmentally friendly heterogeneous acidic catalyst for the greener, 1-pot, 3-component synthesis of 1,8-dioxo-octahydroxanthene via condensation reactions be...
Preparation of 1,5-Diketones by Addition of Cyclohexanone to Chalcones under Solvent-free Phase Transfer Catalyst Condition
Chalcones 1,5-Diketones Solvent-free Phase Transfer Catalyst Michael Addition
2010/4/16
Eight different chalcone-1,5-diketone derivatives (5a-h) were prepared by the reaction of chalcone derivatives (3a-h) with cyclohexanone under the solvent-free phase transfer catalyst condition with m...
Zeolites are crystalline hydrated aluminosilicates of alkaline and alkaline earth metals. The basic zeolite structure is an anionic frame of Si and Al T-atoms, which are tetrahedral and coordinated wi...