Kinetics of COS Amines with Primary and Secondary in Aqueous Solutions
نویسندگان
چکیده
The reaction between COS and aqueous solutions of primary andsecondary amines has been studied by means of the stirred cell technique. Kinetic experiments at temperatures 283 to 333 K were carried out with MEA, DGA, DEA, DIPA, MMEA, AMP, and MOR. All kinetic experiments could be described by a zwitterion reaction mechanism similar to the mechanism proposed by Caplow (1968) for the reaction between CO, and secondary amines: COS + R2NH * R2NHf COSR2NHi COS+ B * R2NCOS+ BHi
منابع مشابه
Reaction Mechanism and Kinetics of Aqueous Solutions of 2-Amino -2 Methyl-1,3- Propanediol and Carbonyl Sulphide
Aqueous solutions of amines are often used to remove CO2, H2S and COS from a large number of industrial gas streams. There are several different processes, each suiting a certain application. A recent advance in gas treating technology is the application of sterically hindered amines, which offer capacity advantages for CO2 over commercial amines such as monoethanolamine (MEA) (Sartori and Sava...
متن کاملCorrelation and Prediction of Solubility of CO2 in Amine Aqueous Solutions
The solubility of CO2 in the primary, secondary, tertiary and sterically hindered amine aqueous solutions at various conditions was studied. In the present work, the Modified Kent-Eisenberg (M-KE), the Extended Debye-Hückel (E-DH) and the Pitzer models were employed to study the solubility of CO2 in amine aqueous solutions. Two explicit equations are presented to evalu...
متن کاملKinetics of Co2 with Primary and Secondary Amines in Aqueous Solutions-i. Zwitterion Deprotonation Kinetics for Dea and Dipa in Aqueous Blends of Alkanolamines
The deprotonation kinetics of the DEA--C02 and the DIPA-COZ zwitterions have been studied in aqueous blends of an&es at 298 K. Amine mixtures investigated were: DEA-TEA, DEA-MDEA. DEL-DMMEA, DEA-DEMEA, DIPA-TEA, DIPA-MDEA, DIPA-DMME~ DIPA-DEMEA. FOG each blend the zwitterion deprotonation constant of the additonal base present in solution (i.e. the tertiary amine) was determined. The observed d...
متن کاملEvaluating the effectiveness of Tamarindus indica partially activated seed coat biomass in removing of nitrates from aqueous solutions
Biomass derived from Tamarindus indica partially activated seed coat was investigated for the removal of nitrate ions from aqueous solutions. Batch experiments were performed to evaluate the parameters like pH, contact time, sorbent dose and initial nitrate concentration. pH of the solution played vital role. The maximum sorption observed at pH=7, sorbent dose 300mg, contact time at 120min, ini...
متن کاملChemoselective N-tert-butoxycarbonylation and N-formylation of Amines by B(OSO3H)3/SiO2 as an Efficient Heterogeneous and Recyclable Catalyst
A simple, efficient, and cost-effective procedure for the N-tert-butoxycarbonylation and N-formylation of amines (primary, secondary) respectively, with di-tert-butyl dicarbonate and 85% aqueous formic acid under solvent-free condition using B(OSO3H)3/SiO2 (SBSA) as a heterogeneous and recyclable catalyst has been developed. We demonstrated that the resulting catalyst is applicable to various a...
متن کامل