Amine absorber

Fluorine systems, e.g., BF3, Freon Moderate foaming, e.g., oil absorbers, amine and. 90... 

Medium MW hydrocarbons Mineral oil absorbers Amines, glycols... 

This process helps to correctly balance the gas mixture but now there will be too much carbon dioxide which must be stripped out using absorbing amine or hot bicarbonate solution. 

Moderate foaming, as in oil absorbers, amine, and glycol regenerators 0.85 Heavy foaming, as in amine and glycol absorbers 0.73... 

Light Absorbing Amines Upon light exposure, such an amine (10.38) can be directly excited and then react with an acrylate monomer (see Ref. [2c]). A radical is thus created on the monomer (the monomer acts as an electron acceptor) an alkyl radical is obviously formed on the amine. 

Initiator No Wavelength (nm) Amine Absorbance Amine Wavelength (nm) Absorbance... 

Solvent incorrect] incorrect concentration of active ingredient for amine absorbers [amine concentration too high or too low] for glycol dehydration solvent concentration TEG < specifications/[solvent stripping inadequate] /[solvent feed temperature too hot] /[solvent contaminated]. ... 

Figure 7.18 shows selected DRIFTS spectra of the quartz treated for 1 h in solutions of C12-ACI and C -AAc. (The spectrum of untreated quartz is shown in Fig. 7.14.) All spectra display typical bands in the 3000-2800-cm range due to the vCH vibrations of alkyl chains. A broad structural band centered at 3250-3000 cm is attributed to H bonded vN+H, vOH, and vNH stretching vibrations. A close inspection of these spectra reveals that twice the position of this band shifts abruptly and bathychromically at a concentration close to the CHC and when the bulk amine precipitates (vide infra). It is well known [445] that a red shift of any H bonded stretching mode indicates an increase in H bond strength. In all the spectra a negative 3745-cm band for free surface silanols is observed, suggesting that the silanols interact with absorbed amine. This interaction is likely H bonding between a proton of the head group of amine cations and the SiOH oxygen. In addition, adsorption of the C12-ACI at Cfe = Cpr > 2 X 10 M results in appearance of a series of new bands at 3330,...

Condensation of carboxylated carbohydrates with UV-absorbing amines in the presence of carbodiimide ... 

The imaging of thicker films of poly(amic esters) could also be carried out using a long wavelength absorbing amine photogenerator. The o-nitrobenzyl carbamate derivatives when substituted with electron donating substituents have... 

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