The bio-based plasticizers have been extensively developed due to their high compatibility and low toxicity. In this study, the bio-based plasticizers of methyl 10-(2-methoxy-2-oxoethansulfonyl) octadecanoate (MDA) and ethyl 10-(2-ethoxy-2-oxoethanesulfonyl) octadecanoate (EDA) were synthesized ...
Sulfuric acid can sulfonate acetic anhydride (but not acetic acid) to sulfoacetic acid, and also to methanedisulfonic acid in the presence of 3,5-dimethylpyrazole. Under the experimental conditions employed, sulfonation of 3,5-dimethylpyrazole with concentrated sulfuric acid in acetic anhydride/...
By sulfonation of 3-R-1-adamantylacetic acids 1 with H2SO4 in trifluoroacetic anhydride (TFAA), the previously unknown α-(3-R-adamantyl)sulfoacetic acids 2 were obtained. In the case of 1-adamantylacetic acid 1a, the use of ∼1 equiv of H2SO4 led to only 1-adamantylacetic acid 2a, while with an...
Solubilities between 323.15 and 413.15 K and equilibrium data between 323.15 and 373.15 K for the water + 4-hydroxy-4-methyl-2-pentanone + benzyl alcohol ternary system are reported in order to obtain the extractive properties of benzyl alcohol for separating 4-hydroxy-4-methyl-2-pentanone from ...
The reaction of 4-hydroxy-4-methyl-2-pentanone (4H4M2P) with Cl atoms was studied for the first time experimentally and theoretically. Relative kinetic measurements were carried out at room temperature and 1 bar of synthetic air/N2 in two different environmental chambers: a 300 L Teflon bag and ...
The reaction of 4-hydroxy-4-methyl-2-pentanone (4H4M2P) with OH radicals was investigated in the gas-phase using an absolute rate method at room temperature and over the pressure range of 10 to 745 Torr in He and air as diluent gases. The rate coefficients were measured with the Pulsed Laser Pho...
This study provides the first kinetic and mechanistic study of the photolysis of 4-hydroxy-4-methyl-2-pentanone (4H4M2P) and the determination of the temperature dependence of the relative rate coefficient for the reaction of OH radicals with 4H4M2P. The UV absorption spectrum of 4H4M2P was dete...
The equilibrium conditions of methane hydrate in the presence of additives of cyclopentanone (C5H8O) or 4-hydroxy-4-methyl-2-pentanone (C6H12O2, also known as diacetone alcohol) in aqueous solutions were experimentally measured in this study. The hydrate-liquid water-vapor (H-Lw-V) three-phase e...
In this present work, we report the effects of different concentrations of various cholinium-based ionic liquids (ILs) on the structural and thermal stability of β-lactoglobulin (β-LG). Results indicated that anions in ILs have played an important role in affecting the thermal and structural s...
In this contribution, we report the cooperative structure-directing effect of choline hydroxide and aluminosilicate *BEA zeolite in the synthesis of aluminogermanosilicate IWR zeolites for the first time. *BEA zeolites, at variance with any other aluminosilicate zeolites, can serve as heterogene...
Dimethylaminoethanol (DMAE) and its salts have been used to treat numerous disorders in humans and hence safety of its use is a concern. DMAE is a close structural analog of choline, an essential nutrient. Exposure to DMAE may affect choline uptake and synthesis. The current investigation charac...
Salt-free catanionic systems based on fatty acids exhibit a broad polymorphism by simply tuning the molar ratio between the two components. For fatty acid combined with organic amino counter-ions, very few data are available on the phase behavior obtained as a function of the molar ratio between...
In a previous study we have shown that the substitution of alkali ions in common fatty acid soaps by choline as a counterion of biological origin increases the solubility of the respective soaps without lowering the biocompatibility. Nevertheless, while choline dodecanoate (ChC12), myristate (Ch...
An environmentally benign and rapid thiolysis of epoxides using a biodegradable, choline-based task-specific ionic liquid has been developed. The ring opening reaction of aryl and alkyl epoxides proceeded rapidly and afforded the corresponding β-hydroxysulfides in high yields with excellent reg...
Nowadays, in most industrial units, biodiesel is produced through transesterification of edible oil and methanol using homogeneous basic catalysts in stirred-tank reactors. The drawbacks of this method include the high cost of feedstock, long reaction time, high energy consumption, and excessive...
In this work hybrid mesoporous SBA-15 and mesoporous silica microspheres functionalized with choline hydroxide ionic liquid have been prepared. A two-step process inspired by the industrial production of choline hydroxide has been developed to synthesize the hybrid SBA-15 material with choline h...
Choline hydroxide was used to accelerate the Al-water reaction to produce hydrogen efficiently and steadily, with only water and aluminum consumption. The effects of parameters such as initial aluminum mass, alkali concentration and temperature on the reaction rate and yield were studied. Compar...
The volumetric properties (apparent molar volumes and partial molar volumes) of ammonium nitrate in N-methylformamide (NMF) have been evaluated from the density data and discussed in the term of respective ionic and dipole interactions. The densities of the NMF + ammonium nitrate mixtures were m...
N-methylformamide (NMF), the major metabolite of the N,N-dimethylformamide (DMF) in human body, is regarded as biomarker of DMF intoxication and represents the internal dose of DMF exposure in human body. Now we developed a novel and feasible method for NMF detection with luminescent Eu3+ functi...
A headspace solid phase microextraction (SPME) method has been developed to determine metabolites of dimethylformamide, N-hydroxymethyl-N-methylformamide, and N-methylformamide (NMF) as NMF in urine by gas chromatography with nitrogen–phosphorus detector (GC-NPD). An SPME holder with a 65-μm P...
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