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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, ...
Density functional theory investigation of electrophilic addition reaction of chlorine to tricyclo[4.2.2.22,5]dodeca-1,5-diene
DFT calculations intrinsic reaction coordinates transannular reactions
2010/10/14
Potential energy surface (PES) of the tricyclo[4.2.2.22,5]dodeca- 1,5-diene (TCDD)-Cl2 system was studied by B3LYP/6-311+G(d,p) method and the configurations [reactants, molecular charge-transfer (CT)...
Methanol dehydration reaction to produce clean diesel alternative dimethylether over mesoporous aluminosilicate-based catalysts
DME aluminosilicate silicotungstic acid methanol dehydration
2010/4/9
Due to its good burning characteristics and high cetane number, dimethylether (DME) is considered as a highly attractive and clean alternative to diesel fuel. This ether can be produced by methanol de...
Water-Gas Shift Reaction over Bimetallic Pt-Ni/Al2O3 Catalysts
Water-gas shift Pt-Ni CO removal high temperature shift (HTS)
2010/4/9
The water-gas shift (WGS) activity of bimetallic Pt-Ni/Al2O3 catalysts was investigated in the temperature range 200-450 °C using an idealized feed composition consisting of 3% CO and 6%-10% H2O. The ...
Behaviour of Salicylaldehyde and Some of Its Derivatives in the Biginelli Reaction for the Preparation of Aryl Tetrahydropyrimidines
Salicylaldehyde derivatives Biginelli reaction Michael addition
2010/4/16
Salicylaldehyde and some of its derivatives react with urea (or thiourea) and ethyl acetoacetate (the Biginelli reaction) to give products that depend on the type of the substituent in the ortho-posit...
Synthesis of Nitrogen-Containing Heterocycles from the Reaction of Amidrazones with a-Haloesters
Amidrazones a-haloesters 4,5-dihydro-1,2,4-triazin-6-one
2010/4/16
The reaction of amidrazones 1 with a-haloesters 2 formed 1,3,5-substituted 4,5-dihydro-1,2,4-triazin-6-ones (4a-z) rather than 1,2,4-triazin-5-one derivatives (5a-z). The microanalysis and spectral da...
Attempted Synthesis of 1-Cyclohepta-1,2-dien-1-ylbenzene and Wurtz-Like Condensation Products in the Reaction of 1-(2,3-Dibromocyclohept-1-en-1-yl)benzene with Zinc
Substituted strained cyclic allene dehydrobomination Wurtz-like condensation zinc
2010/4/19
7,7-Dibromo-1-phenylbicyclo[4.1.0]heptane 4 was synthesized and its thermal and silver ion-catalyzed rearrangements were studied. Alcohol 8 was converted to 1-(2,3-dibromocyclohept-1-en-1-yl)benzene 6...
Synthesis of Some New Isoxazolidines by 1,3-Dipolar Cycloaddition Reaction of Nitrones and Olefins
Isoxazolidine Nitrones 1,3-Dipolar Cycloaddition
2010/4/20
A series of new isoxazolidines 5a-j were synthesized by 1,3-dipolar cycloaddition reaction of different nitrones with substituted olefins under reflux condition. The yields of products following recry...
Color Reaction of 2-(2-Quinolylazo)-5-Dimethylaminoaniline with Palladium and Its Application
2-(2-quinolylazo)-5-dimethylaminoaniline palladium spectrophotometry
2010/4/20
A new chromogenic reagent, 2-(2-quinolylazo)-5-dimethylaminoaniline (QADMAA) was synthesized. A sensitive, selective and rapid method for the determination of palladium based on the rapid reaction of ...
An Efficient Synthesis of Substituted 4-Aryl-3-Cyano-2-Amino Thiophenes by a Stepwise Gewald Reaction
Aminothiophenes bromocrotonitriles substituted aminothiophenes
2010/4/20
The title compounds were efficiently synthesised starting from aryl methyl ketones in 3 steps. Knoevenagel condensation of aryl methyl ketones with malononitrile gave the corresponding crotonitriles (...
The Kinetics of the Photochemical Reaction of Methylene Green with Methylamine and Ethylamine
Photochemical reduction methylene green amines kinetics mechanism thermodynamic parameters
2010/4/20
The Kinetics of the Photochemical Reaction of Methylene Green with Methylamine and Ethylamine.
Reaction Mechanism and Kinetics of Aqueous Solutions of 2-Amino -2 Methyl-1,3- Propanediol and Carbonyl Sulphide
Reaction Mechanism Kinetics of Aqueous Solutions 2-Amino -2 Methyl-1,3- Propanediol Carbonyl Sulphide
2010/6/27
The mechanism and kinetics of the reaction between aqueous solutions of COS and a sterically hindered primary amine, 2-amino-2-methyl-1,3-propanediol (AMPD), were investigated at 288-303 K using a sto...
Further Studies on the Reaction of Unsaturated Acids with o-Phenylenediamine and 4-Substituted o-Phenylenediamines in Acid Medium
Further Studies the Reaction of Unsaturated Acids o-Phenylenediamine 4-Substituted o-Phenylenediamines in Acid Medium
2010/6/30
Condensation of methylcrotonic acid with 4-chloro-o-phenylenediamine in 4N HCl yielded 5-chloro-2-(1-isobutenyl)benzimidazole and 7-chloro-4, 4-dimethyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepin-2-one. ...
Polarographic Studies on the Kinetics of the Electrode Reaction of 4-Benzoyl-1,5 Diphenyl Pyrazole-3-Carboxylic Acid
Polarographic Studies the Kinetics of the Electrode Reaction 4-Benzoyl-1,5 Diphenyl Pyrazole-3-Carboxylic Acid
2010/6/30
The polarographic behavior of 4-Benzoyl-1,5 diphenyl pyrazole-3- Carboxylic acid (BDPPCA) in aqueous ethanol solution (76 % v/v) at 25oC was studied as a function of pH using Mcl buffer solution. One ...
Potential Utilization of Fusel Oil: A Kinetic Approach for Production of Fusel Oil Esters Through Chemical Reaction
fusel oil esterification kinetics
2010/7/1
Fusel oil is a by-product of the distillation of ethyl alcohol from the fermentation of molasses and contains mainly C3-C5 alcohols. Acetic acid and butyric acid esters of its major alcohol components...