In natural gas treatment, the removal of CO2 and H2S in acid gases is a critical concern. There are various purification technologies that can be used for the removal of acid gas impurities. Absorption of acid gas into amines is one preferred method in gas industries. In the past, single amines was used, but recently in order to improve absorption performance, mixed amines with different solubi...

in natural gas treatment, the removal of co2 and h2s in acid gases is a critical concern. there are various purification technologies that can be used for the removal of acid gas impurities. absorption of acid gas into amines is one preferred method in gas industries. in the past, single amines was used, but recently in order to improve absorption performance, mixed amines with different solubi...

separation of some biogenic amines via rp-hplc using mixed micellar mobile phase was investigated. the compounds were derivatized before hand by dansyl chloride as a chromophoric reagent. appropriate conditions for separation, were determined by studying factors such as temperature, type and percentage of organic modifier, concentration of surfactants (sds and brij-35) and the ph of the mobile ...

Aliphatic amines, such as n-hexylamine (primary), di-n-hexylamine (secondary) and tri-n-hexylamine (tertiary amine), react with tetrabromophenolphthalein ethyl ester molecules (TBPEH) to form reddish or red-violet charge-transfer complexes (CT complexes) in 1,2-dichloroethane (DCE). The absorption maxima of the CT complexes with all primary amines occur at around 560 nm, with secondary amines a...

• The observation that tissues depleted of norepinephrine no longer respond normally to certain sympathomimetic amines" led Burn and Rand to hypothesize that these amines exert their effect by releasing norepinephrine from storage sites in the postganglionic adrenergic nerve endings. On the basis of their effect on denervated or reserpine-pretreated tissues, the sympathomimetic amines have been...

Although gastric and intestinal contents from rats failed to show amino acid decarboxylase activity when tested against five different amino acids (glutamic acid, arginine, lysine, tyrosine, and histidine), the feces contained at least seven different amines, some known to be pharmacologically active. Putrescine, histamine, and tyramine were identified by means of paper chromatography in both i...

In order to select the best mixed amines in CO2 capture process, absorption of was explored at required concentrations by using monoethanolamine (MEA) as a basic solvent, with diisopropanolamine (DIPA), triethanolamine (TEA), 2-amino-2-methyl-1-propanol (AMP), and piperazine (PZ). Here, bubble column used scrubber, continuous operation adopted. The Taguchi method for experimental design. condit...

A new gelator 1 based on a simple naphthalimide derivative was synthesized and fully characterized. It was found that the organogel 1 was formed only in a mixed solvent of methanol and H2O (1/1, v/v). The organogel was thoroughly characterized by using various microscopic techniques including field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and UV-vis, fluorescence ...