The kinetics of the synthesis of n-propyl-tert-butyl ether from isobutene and 1-propanol on sulfonated Amberlyst 15 copolymer in gas phase was investigated. The Langmuir–Hinshelwood equations were adjusted to the results of the kinetic experiment using the values of the adsorption equilibrium c...

The (liquid + liquid) equilibria of a ternary system (water + dodecane + propylene glycol n-propyl ether) were measured at T = (288.15, 298.15, and 308.15) K under atmospheric pressure. At T = 298.15 K, the system exhibits one three-liquid-phase-coexisting tie triangle and three two-liquid-phase...

The fish-shaped phase diagram of the ternary system (water + hexadecane + dipropylene glycol n-propyl ether) under atmospheric pressure was performed at constant water/hexadecane mass ratio (1/1). The upper critical solution temperature of the ternary system was determined as 314.00 K. Liquid + ...

Isobaric (vapour + liquid + liquid) equilibria were measured for the (di-n-propyl ether + n-propyl alcohol + water) and (diisopropyl ether + isopropyl alcohol + water) system at 100 kPa.The apparatus used for the determination of (vapour + liquid + liquid) equilibrium data was an all-glass dynam...

Azeotropic mixtures are impossible to separate by ordinary distillation. Two of the most common methods for separating a binary homogeneous azeotrope are pressure-swing distillation (PSD) and extractive distillation (ED). The PSD process is effective if the azeotropic composition changes signifi...

Fish-shaped phase diagrams at a fixed water/oil mass ratio (1/1) were measured under atmospheric pressure and were used to determine the upper and lower critical solution temperatures of the ternary systems: water + dodecane + propylene glycol n-propyl ether and water + tetradecane + propylene g...

Removal of contaminants such as acid gases, i.e. CO2, H2S, and sulfur components is the main step in a natural gas treatment process. In this study, the simultaneous solubility of carbon dioxide and ethyl mercaptan (ETM) in the different mixtures of the chemical and physical solvents are measure...

Amine-based absorption/stripping is one of the promising technology for CO2 capture from natural and industrial gas streams. During the process, amines and CO2 undergo irreversible reactions to produce undesired compounds, which cause corrosion, foaming, increased viscosity and breakdown of equi...

Lead-containing wastewater comes mainly from batteries, petroleum refining, dyes, lead mine drainage and so on. Here, the nanosilica functionalized with diethanolamine (DPM-SNPs) was utilized as an adsorbent to remove lead ions from aqueous solution. TEM, SEM, XPS, FT-IR, Zeta potential and BET ...

Alkanolamines are widely used in the purification of the sour gas sweetening process. During the sour gas absorption process, CO2 significantly degrades the amine solvent and creates enormous problems for plant operation. In this work, CO2 induced degradation of aqueous diethanolamine (DEA) solu...

ObjectiveTo determine in vitro spermatotoxic effect of diethanolamine on human spermatozoa.

The curing of diglycidyl ether of bisphenol A (DGEBA) epoxy with diethanolamine (DEA) is studied. DEA has three reactive groups, a secondary amine hydrogen and two hydroxyls. The secondary amine reacts rapidly, forming an adduct containing tertiary amines, epoxides and hydroxyls. The epoxides an...

An inhalation reference concentration (RfC) was developed for diethanolamine (DEA), based principally on evaluation of three animal studies (Gamer et al., 1993, 1996, 2008). The RfC (25 μg/m3) was based on statistically significantly increased relative liver weight in female rats in Gamer et al...

ObjectiveTo determine the toxic effect of diethanolamine on testicular steroidogenesis and its possible amelioration by curcumin in mice.

Diethanolamine functionalized cellulose based on rice husk (DEA-EPI-RH) was prepared to separate gallium ions from As(III) or/and Ge(IV) mixtures. The contents of hydroxyl functional group in the DEA-EPI-RH were up to 1.48 mmol g−1, and the maximum adsorption capacity for Ga(III) achieved to 130...

Speciation analysis of inorganic arsenic, chromium and selenium in environmental waters is of great significance for the monitoring of environmental pollution. In this work, 3-(2-aminoethylamino) propyltrimethoxysilane (AAPTS) functionalized multi-wall carbon nanotubes (MWCNTs) were synthesized ...

Toward liquid ammonia at −75°, hn complexes of Pt(II, IV) and Pd(II) exhibit the following types of behavior: (1) No reaction, (2) partial or complete ligand substitution, (3) deprotonation accompanied by ligand substitution and (4) partial ligand substitution followed by disproportionation. Wi...

Three new copper (II) complexes, [Cu(L)(H2O)]ClO4 (1), [Cu(L1)(ClO4)]+ (2) and [Cu(L1)]2+ (3), where HL = 2-(E)-(2-(2-aminoethylamino)methyl)-4-bromophenol, L1 =(19E, 27E)-N1,N2-bis(phenyl(pyridine-2-yl)-methylene)-ethane-1, 2-diamine, have been synthesized and characterized by using various phy...

A procedure for separation and preconcentration trace amount of Cu(II), Fe(III) and Pb(II) by 2-((2-aminoethylamino)methyl)phenol-functionalized activated carbon (AC-AMP) packed column has been proposed. Under the optimized conditions (pH 4, flow rate 2.0 mL min−1), Cu(II), Fe(III) and Pb(II) we...

The 3-[2-(2-aminoethylamino)ethylamino]propyl-trimethoxysilane(AAAPTS) functionalized silica gel (AAAPTS/SiO2) was synthesized and used as a potential adsorbent for the As(V) removal from aqueous solutions. AAAPTS/SiO2 was characterized by IR, nitrogen adsorption and point of zero charge (pHpzc)...