FTIR Product Distribution Study of the Cl and OH Initiated Degradation of Methyl Acrylate at Atmospheric Pressure

2010 ◽  
Vol 44 (18) ◽  
pp. 7031-7036 ◽  
Author(s):  
María B. Blanco ◽  
Iustinian Bejan ◽  
Ian Barnes ◽  
Peter Wiesen ◽  
Mariano A. Teruel
Keyword(s):  
Methyl Acrylate ◽  
Atmospheric Pressure ◽  
Product Distribution ◽  
Distribution Study

scholarly journals Continuous-flow Heck synthesis of 4-methoxybiphenyl and methyl 4-methoxycinnamate in supercritical carbon dioxide expanded solvent solutions

2013 ◽  
Vol 9 ◽  
pp. 2886-2897 ◽  
Author(s):  
Phei Li Lau ◽  
Ray W K Allen ◽  
Peter Styring
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Methyl Acrylate ◽  
Heck Reaction ◽  
Continuous Flow ◽  
Flow Reactor ◽  
Product Distribution ◽  
Internal Diameter ◽  
Palladium Metal ◽  
Supercritical Carbon

The palladium metal catalysed Heck reaction of 4-iodoanisole with styrene or methyl acrylate has been studied in a continuous plug flow reactor (PFR) using supercritical carbon dioxide (scCO2) as the solvent, with THF and methanol as modifiers. The catalyst was 2% palladium on silica and the base was diisopropylethylamine due to its solubility in the reaction solvent. No phosphine co-catalysts were used so the work-up procedure was simplified and the green credentials of the reaction were enhanced. The reactions were studied as a function of temperature, pressure and flow rate and in the case of the reaction with styrene compared against a standard, stirred autoclave reaction. Conversion was determined and, in the case of the reaction with styrene, the isomeric product distribution was monitored by GC. In the case of the reaction with methyl acrylate the reactor was scaled from a 1.0 mm to 3.9 mm internal diameter and the conversion and turnover frequency determined. The results show that the Heck reaction can be effectively performed in scCO2 under continuous flow conditions with a palladium metal, phosphine-free catalyst, but care must be taken when selecting the reaction temperature in order to ensure the appropriate isomer distribution is achieved. Higher reaction temperatures were found to enhance formation of the branched terminal alkene isomer as opposed to the linear trans-isomer.

Product distribution study of the Cl-atom initiated oxidation of ethyl methyl sulfide and diethyl sulfide

2014 ◽  
Vol 85 ◽  
pp. 41-47 ◽  
Author(s):  
Gabriela Oksdath-Mansilla ◽  
Alicia B. Peñéñory ◽  
Ian Barnes ◽  
Peter Wiesen ◽  
Mariano A. Teruel
Keyword(s):  
Product Distribution ◽  
Diethyl Sulfide ◽  
Methyl Sulfide ◽  
Distribution Study ◽  
Ethyl Methyl ◽  
Cl Atom

scholarly journals High Selectivity of Alkanes Production by Calcium Basic Soap Thermal Decarboxylation

2018 ◽  
Vol 156 ◽  
pp. 03035
Author(s):  
Godlief F. Neonufa ◽  
Meiti Pratiwi ◽  
Tatang H. Soerawidjaja ◽  
Tirto Prakoso
Keyword(s):  
Atmospheric Pressure ◽  
High Selectivity ◽  
Catalytic Effect ◽  
Batch Reactor ◽  
Palm Stearin ◽  
Product Distribution ◽  
Fuel Production ◽  
Renewable Fuel ◽  
Catalytic Decarboxylation ◽  
Thermal Decarboxylation

Renewable fuel production from vegetable oil and fat or its fatty acids by direct decarboxylation has been widely reported. An innovative approach to produce drop-in fuel via thermal catalytic decarboxylation of basic soap derived from palm stearin reported in this research. The catalytic effect of the calcium and magnesium metals in the basic soap and its decarboxylation on drop-in fuel yield and product distribution was studied. The catalytic effect was tested in the temperature range up to 370°C and atmospheric pressure for 5 hours in a batch reactor. It has been proved that the calcium basic soap decarboxylation, effectively produce the drop-in fuel in carbon ranges C8 – C20, in which more than 78% selectivity toward alkane. Whereas, only 70% selectivity toward alkane has been resulted from the magnesium basic soap decarboxylation.

Oxidation sites in dealuminated mordenite. A combined EPR, NMR and product distribution study

1996 ◽  
Vol 92 (11) ◽  
pp. 2027 ◽  
Author(s):  
Gillian Harvey ◽  
Roel Prins ◽  
Rowena Crockett ◽  
Emil Roduner
Keyword(s):  
Product Distribution ◽  
Distribution Study

scholarly journals FTIR product study of the Cl-initiated oxidation products of CFC replacements: (E/Z)-1,2,3,3,3-pentafluoropropene and hexafluoroisobutylene

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12739-12747
Author(s):  
Cynthia B. Rivela ◽  
Rodrigo G. Gibilisco ◽  
Carmen M. Tovar ◽  
Ian Barnes ◽  
Peter Wiesen ◽  
...  
Keyword(s):  
Product Distribution ◽  
Oxidation Products ◽  
Distribution Study ◽  
Product Study

An experimental product distribution study and the atmospheric implications of the reactions of Cl with two fluorinated alkenes is provided.

Replacing benzyl chloride with benzyl alcohol in heterogeneous catalytic benzylation of aromatic compounds

2012 ◽  
Vol 84 (3) ◽  
pp. 427-437 ◽  
Author(s):  
Natalia Candu ◽  
Stefan Wuttke ◽  
Erhard Kemnitz ◽  
Simona M. Coman ◽  
Vasile I. Pârvulescu
Keyword(s):  
Benzyl Alcohol ◽  
Atmospheric Pressure ◽  
Reaction Rate ◽  
Product Distribution ◽  
Batch Reactors ◽  
Reaction Products ◽  
Resonance Effects ◽  
Heterogeneous Catalytic ◽  
Beta Zeolites ◽  
Inorganic Fluorides

Comparative catalytic liquid-phase benzylation of aromatic compouds (e.g., benzene and ethylbenzene) to diphenylmethane (DPM) derivatives with benzyl alcohol (BnOH) was investigated over various catalysts like zeolite (HSZ 600 mordenite, CBV 20A mordenite, H-beta zeolites with Si/Al ratios of 10.8 and 35.8, respectively) and nano-structured inorganic fluorides (MgF2) at 80–120 °C under atmospheric pressure. The reactions were carried out in batch reactors using two methodologies: (i) by introducing both the solution of substrate and BnOH at the beginning of the reaction, and (ii) by drop-wise addition of BnOH (1–2 drops/min for 4 h) to the reaction mixture. The analysis of the reaction products indicated that the conversion and product distribution depend on the experimental method and the nature of the catalyst. The reaction rate was found to correlate to the nucleophilicity of the substrates and their ability to delocalize the positive charge in the Wheland intermediate by inductive and resonance effects.

scholarly journals Gas-phase degradation of 2-butanethiol initiated by OH radicals and Cl atoms: kinetics, product yields and mechanism at 298 K and atmospheric pressure

RSC Advances ◽  
2019 ◽  
Vol 9 (39) ◽  
pp. 22618-22626
Author(s):  
Alejandro L. Cardona ◽  
Rodrigo G. Gibilisco ◽  
María B. Blanco ◽  
Peter Wiesen ◽  
Mariano Teruel
Keyword(s):  
Gas Phase ◽  
Atmospheric Pressure ◽  
Relative Rate ◽  
Product Distribution ◽  
Rate Coefficients ◽  
Oh Radicals ◽  
Product Yields ◽  
Cl Atoms ◽  
Relative Rate Coefficients

Relative rate coefficients and product distribution of the reaction of 2-butanethiol (2butSH) with OH radicals and Cl atoms were obtained at atmospheric pressure and 298 K.

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