The extraction of glycolic acid from an aqueous glycolonitrile hydrolysate with tri-n-octylamine (TOA) in diluents of 1-octanol and kerosene was investigated in this article. The influences of TOA concentration, extraction temperature and phase ratio, O/W (volume ratio of organic phase to aqueou...

To isolate glycolonitrile-hydrolyzing microorganisms, a simple and rapid high-throughput screening method based on a colorimetric reaction of glycolic acid with β-naphthol in sulfuric acid solution was developed. Four strains able to convert glycolonitrile to glycolic acid were isolated from so...

The separation of glycolic acid (GA) from glycolonitrile hydrolysate by using adsorption resins (HPD 950, HPD450, and AB-8) was studied, and the adsorption kinetics and the dynamic adsorption and the dynamic desorption were investigated systematically. The results indicated that a higher quality...

It is a trade-off between sugar loss in pretreatment and sugar release in hydrolysis for most pretreatment. Here, a stepwise mild pretreatments of aqueous ammonia pretreatment and ethylenediamine was developed to reduce the sugar loss during pretreatment process and improve the sugar release in ...

Ethylenediamine-modified graphene oxide-based three-dimensional aerogels were fabricated by one-step hydrothermal technique. The influence of oxidation conditions and starting graphite material was studied by elemental analysis, X-ray photoelectron spectroscopy, Raman spectroscopy and Scanning e...

In this work, a theoretical investigation on the electron interactions with 1,2-ethylenediamine and dimethyldiazene (also known as azomethane) is presented. Differential cross sections (DCS), integral cross sections (ICS), and momentum transfer cross sections (MTCS) for elastic scattering as wel...

Detailed voltammetric investigations that demonstrate the potential of 1-butyl-3-methyl imidazolium tetrafluoroborate ([BMIM][BF4]), a commonly used room-temperature ionic liquid (RTIL), to enhance the stickiness in the sticky dissociative electrodetoxification pathway for chloroacetonitrile are...

The electrocarboxylation of chloroacetonitrile (NC–CH2–ClRCl) mediated by [CoIIL2]2+ (L = terpyridine) was investigated by cyclic voltammetry. Electrochemical studies under argon atmosphere showed that the monoelectronic reduction of [CoIIL2]2+ yielded a Cobalt(I) complex which after the loss ...

In this work the thermodynamic properties such as volumetric and viscosity properties of binary mixtures of propionitrile with dimethylsulfoxide (or diethylsulfoxide) have been investigated with the use of density and viscosity measurements over the full range of compositions at temperatures fro...

The plasma polymerization of allylamine was often investigated to modify polymer surfaces with primary amino groups. However, this deposition process is characterized by a significant loss of NH2 groups originally present in allylamine. To compensate this loss of NH2 groups in the deposited plas...

We report here the dry, one-step, and low-temperature modification of FTO surfaces using pulsed plasma polymerization of allylamine (PPAAm). PPAAm/FTO surfaces were characterized by X-ray photoelectron spectroscopy, spectroscopic ellipsometry, and contact angles to understand the morphological, ...

Relative permittivities at 1 MHz, εr, and refractive indices at the sodium D-line, nD, are reported at 0.1 MPa and at (293.15–303.15) K for the binary systems 1-alkanol + di-n-propylamine (DPA). Their corresponding excess functions are calculated and correlated. For the methanol mixture, posit...

We report the hydrothermal synthesis of SAPO-47 crystals by using n-propylamine (NPA) as template. The resulting product sensitively depends on the gel compositions and synthesis procedure. By optimizing the molar ratio of SiO2/Al2O3, content of HF and NPA, large perfect cubic-shaped SAPO-47 cry...

The kinetics of CO2 absorption into unloaded aqueous solutions of 3-dimethylamino-1-propanol (3DMA1P) and 1-(2-hydroxyethyl)pyrrolidine (1-(2HE)PRLD) blended with 3-(methylamino)propylamine (MAPA) were studied in the temperature range of 29 - 63 °C using a string of discs contactor. In addition...

This work studies the potential of using the tertiary amines 3-dimethylamino-1-propanol (3DMA1P), 3-diethylamino-1-propanol (3DEA1P) and 1-(2-hydroxyethyl)pyrrolidine (1-(2HE)PRLD) as an alternative to 2-(diethylamino)ethanol (DEEA) in the blend with 3-(methylamino)propylamine (MAPA). Vapour pre...

We synthesized 6-chloro-7-propylamine-5,8-quinolinedione and 7-chloro-6-propylamine-5,8-quinolinedione and characterized these new compounds by X-ray diffraction and IR spectroscopy techniques supplemented by DFT calculations. Analyses were performed with the special attention to the structural ...

The micro-heterogeneous structure of neat and aqueous propylamine is examined through computer simulations. Neat propylamine is found to have a pre-peak in the nitrogen-nitrogen structure factor, due to the presence of branched chain-like aminogen clusters. Aqueous propylamine mixtures are found...

α-Ti(HPO4)2·H2O (α-TiP) and its propylamine intercalation product, Ti(HPO4)2·2C3H7NH2·H2O (α-TiPPr), have been synthesized and characterized. Later, their sorption capacity for europium(III) was investigated, and this purpose was accomplished by treating α-TiP and α-TiPPr with europium(I...

Binary mixtures of liquid surfactants, owing to the amphiphilic nature of the molecules involved, can exhibit nano-segregation and peculiar transport properties. The amphiphilicity, and consequently the resulting self-assembly, can be tuned by changing the length of the alkyl chains and the natu...

The adsorption on anatase (101) TiO2 surface of two model amines, diaminoethane (DAE) and propylamine (PPA), was investigated using Density Functional Theory-Dispersion included (DFT-D) calculations. The investigated coverage is ranging from 0.25 monolayer to full coverage (one amine molecule pe...