Non-oxidative thermal degradation of amines: GCMS/FTIR spectra analysis and molecular modeling

ATR-FTIR Model Development and Verification for Qualitative and Quantitative Analysis in MDEA–H2O–MEG/TEG–CO2 Blends

“…The RMSE for both MEG and TEG in CO 2 -loaded MDEA-MEG/TEG blends was <0.0098 wt% and in CO 2 -loaded MDEA-H 2 O-MEG/TEG blends, it was 0.016 wt% and 0.0401 wt%, respectively. The thermal degradation of MDEA was low and the change in MDEA spectra was in agreement with Handojo et al [28], and the predicted values of MEG/TEG were close to the initial chemical values, which verified that MEG/TEG did not degrade at 135 • C. The largest deviations were seen for H 2 O. Even though the water was not predicted as accurately as the rest, the overall results are acceptable.…”

“…Cuccia et al reviewed the data available in the literature where FTIR was used to analyze degradation byproducts in the liquid phase for post-combustion CO 2 capture processes [27]. Handojo et al [28] used FTIR to identify thermal degradation byproducts in aqueous MDEA degradation at 120 • C with continuous CO 2 absorption and verified it with GC-MS. Haghi et al [29] used a PLS model with both near-infrared and ultraviolet spectroscopy to determine the concentration of both MEG and sodium chloride in solutions. A combined acid gas and water removal system solvent can consist of amine and MEG/TEG, and during the regeneration step it will also have absorbed water and acid gas, which need to be stripped for the regeneration of the solvent.…”

Effect of Various Parameters on the Thermal Stability and Corrosion of CO2-Loaded Tertiary Amine Blends

“…Both stirred cell reactors [32,33,36,39] and metal cylinders [10,21,28,37] have been used to study amine solutions' thermal stability. In this work, metal cylinders were selected, as various amine solutions at different concentrations could be tested in multiple cylinders at the same time, consequently reducing the overall experimental duration.…”

CO2 Absorption Performance and Electrical Properties of 2-Amino-2-methyl-1-propanol Compared to Monoethanolamine Solutions as Primary Amine-Based Absorbents

“…Although the MEA utilization increases theoretically to about 1.0 mol CO 2 /mol MEA by carbamate (RNHCOO – ) hydrolysis in the low-concentration MEA solution or high CO 2 partial pressure, the utilization is generally controlled so as to not exceed 0.5 mol CO 2 /mol MEA using a high-concentration MEA solution to prevent the corrosion of the equipment. In addition, the high energy consumption for solvent regeneration needs to be decreased in order to improve the economy of the process. , Hence, many studies have been carried out to investigate a novel catalyst, new chemical absorbent, and hybrid systems to diminish the presently excessive energy consumption. 2-Amino-2-methyl-1-propanol (AMP), a primary and sterically hindered amine, is considered an attractive absorbent to substitute for MEA because an AMP system can be operated with a high theoretical utilization of 1.0 in high AMP concentrations and as the energy requirements for solvent regeneration are relatively low due to the steric hindrance effect. , However, the system’s slow reaction rate, when using solely AMP alone as a solvent, has prohibited its practical use .…”

“…In addition, the high energy consumption for solvent regeneration needs to be decreased in order to improve the economy of the process. 10,11 Hence, many studies have been carried out to investigate a novel catalyst, new chemical absorbent, and hybrid systems to diminish the presently excessive energy consumption. 2-Amino-2-methyl-1-propanol (AMP), a primary and sterically hindered amine, is considered an attractive absorbent to substitute for MEA because an AMP system can be operated with a high theoretical utilization of 1.0 in high AMP concentrations and as the energy requirements for solvent regeneration are relatively low due to the steric hindrance effect.…”