The fluorogenic substrate 4-methylumbelliferyl heptanoate (MUH) has been reported to be suitable for measurement of lipase activity in cereal grains. In the present study, MUH hydrolysis was compared with a conventional lipase assay which measured the release of free fatty acids (FFA) from endog...

Post combustion CO2 capture (PCC) through reactive absorption is a promising technology to tackle climate change. The application of new solvents enables a reduction in energy demand. This research work discusses the suitability of aqueous sodium glycinate (NaGly) as a CO2 absorption solvent.Lab...

Thermal decomposition of perfluoro(dimethylaminoacetic) acid alkali salts was carried out at 220–310°C. A potassium salt gave CF3NCF2 as the principal product in moderate yield, together with CF3NCFCF3 and (CF3)2NCFCF2. Sodium and lithium salts gave (CF3)2NCFCFN(CF3)2 and (CF3)2NCF2C(O...

Auto de-bromine-coupling reactions of 1-aryl-7-bromocycloheptenes to a new series of [7-6-6] tricyclic system were described. A variety of substituents at the para-position of the phenyl were amenable to this transformation, including electron-donating groups and halides. The presence of electro...

Reactions of 1 - bromo - 7 - (2 - hydroxyethoxy)cycloheptene 2 and its chloro analogue 3 with potassium t-butoxide in dimethyl sulphoxide or tetrahydrofuran gave cycloheptatriene and cis - 8,11 - dioxabicyclo[5.4.0]undec - 2 - ene 18 as the major products together with small amounts of the trans...

The synthesis of the four optical isomers of known absolute configuration of O-2-butyl S-2-(dimethylammonium)ethyl ethylphosphonothioate hydrogen oxalate is described. Values for the affinity constant (Ka), phosphonylation constant (kp), and bimolecular inhibition rate constant (ki) for the inhi...

Crystals of magnesium oxomethoxoniobate, Mg2Nb2O2(OMe)10(MeOH)4 (1), resulting from partial decomposition of bimetallic alkoxoniobate, MgNb2(OMe)12·2MeOH (2), have been isolated with moderate yields from solutions obtained by interaction of magnesium and niobium methoxides in MeOH. Compound 1 i...

A series of activated Mg-based alloys with low-melting-point metals (Zn, Sn, Bi, and In) are prepared by ball milling and characterized by scanning electron microscope and X-ray diffraction. Their hydrogen generation properties are systematically investigated in seawater and methanol. The result...

The effects of the size of the alkoxy group on the thermal decomposition behavior of magnesium alkoxides (magnesium methoxide and ethoxide) and the crystallization behavior of MgO was investigated using thermogravimetry, Fourier-transformed infrared spectroscopy, X-ray powder diffraction, and tr...

The X-ray diffraction study of the crystals deposited from the solution obtained by the reaction of magnesium with methanol allowed the formulation of the product as Mg(OMe)2·3.5MeOH (I). Its structure is built of the residues of four types, namely cubane [Mg4(μ3-OR)4(OR)4(ROH)8] neutral molec...

The effects of diethanolamine (DEA) addition on the crystallization behavior of magnesium methoxide and the stabilization behavior of the Mg-alkoxide were investigated using differential scanning calorimetry, thermogravimetry, X-ray powder diffraction, transmission electron microscopy, and X-ray...

A solution of Mg(OCH3)2 in methanol, in-house prepared solid MgOx(OCH3)2−2x, and commercial Ca(OCH3)2 were tested at 60 °C in transesterification of tributyrin with methanol—a model reaction for biodiesel production. The homogeneous magnesium methoxide acts fast at the beginning of the reactio...

The use of magnesium methoxide for the deprotection of alkyl esters is described. This mild reagent provides a good method to cleave esters efficiently and more importantly, allows for effective differentiation between two different esters. The order of the reactivity of this reagent towards acy...

This study was performed for the development of a green and promising approach for the synthesis of methyl acrylate and acrylic acid by a one-step aldol condensation reaction of dimethoxymethane and methyl acetate over cesium oxide-supported on ZSM-35 zeolite catalysts; the effect of base sites ...

The rate coefficient of the reaction of dimethoxymethane with OH radicals was determined in a slow-flow reactor with pulsed laser photolysis/laser-induced fluorescence technique. Temperatures ranged from 297 to 570 K at nominal pressures of 2, 5, and 10 bar (bath gas: helium). The very weak temp...

In this work, thermal oxidation reaction of dimethoxymethane (DMM) at low temperature was investigated with a custom-designed mini closed pressure vessel test (MCPVT) employed. The initial auto-oxidation, thermal decomposition and deep radical oxidation processes were revealed by analyzing the b...

A composite material VOx/g-C3N4 was prepared and its composition and structure was characterized by FT-IR, XRD, SEM, TEM and XPS. The results showed that VOx was grafted on g-C3N4 surface with molecularlevel dispersion via V or O atoms interacting with the characteristic groups on g-C3N4 surface...

In this work, ionic liquid (IL) as green solvent was first proposed for capturing methanol and dimethoxymethane (DMM) gases released in the fuel synthesis process. The hydrophilic IL [EMIM][BF4] was selected from 192 kinds of ILs by the COSMO-RS model. The separation mechanism was revealed at th...

In this study (Part II), the oxidation of dimethoxymethane (DMM) is investigated and a detailed chemical reaction model developed for a comprehensive description of both high- and low-temperature oxidation processes. The sub-mechanism of DMM is implemented using AramcoMech2.0 as the base mechani...

The pyrolysis and low- to intermediate temperature oxidation chemistry of dimethoxymethane (DMM), the simplest oxymethylene ether, is studied theoretically and experimentally in a JSR setup. The potential energy surfaces for peroxy species relevant during the low-temperature oxidation of dimetho...