Comparison of different Solvents from the Solvent Degradation Rig with Real Samples

Important Aspects Regarding the Chemical Stability of Aqueous Amine Solvents for CO2 Capture

“…This includes instrumentation for both gas and liquid chromatography (GC and LC, respectively), often coupled with mass spectrometry (MS) or other detectors. Common variations of GC and LC are GC−MS, ,,,,− GC coupled with nitrogen chemoluminescence detection (GC-NCD) , or flame ionization detection (GC-FID), LC with tandem mass spectrometry (LC–MS/MS), ,,,,, high-performance LC (HPLC) ,,,,, and HPLC coupled with time-of-flight MS detection (HPLC TOF-MS). ,, Other important analytical methods include ion chromatography (IC), ,,,,,,,,,,,, capillary electrophoresis (CE), , nuclear magnetic resonance (NMR), ,,,, and Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR–MS). , A combination of several of these is required for analyzing all degradation compounds; GC-NCD is often used specifically for the analyses of total nitrosamines, while IC is often used for carboxylic acids or other anionic compounds or the amine itself. GC–MS and LC–MS/MS, HPLC techniques are used for various degradation compounds.…”

“…Quantitative data (based on commercial standards) for OZD, AEEA/HEEDA, and HEIA are available from thermal degradation experiments, e.g., ,, SINTEF solvent degradation rig, and from the MEA campaign at Technology Centre Mongstad (TCM) . Additionally, MEA-urea data is available from thermal degradation experiments and from SINTEF’s solvent degradation rig. , MEA-trimer and TriHEIA were identified by Davis, and AEHEIA was quantified using a compound of similar structure da Lepaumier et al and Silva et al , In thermal degradation experiments, HEIA is often a significant component. It is a far less significant degradation component in cycled degradation setups and pilot plants.…”

“…127 Additionally, MEA-urea data is available from thermal degradation experiments and from SINTEF's solvent degradation rig. 28,104 MEAtrimer and TriHEIA were identified by Davis, 64 and AEHEIA was quantified using a compound of similar structure da Lepaumier et al and Silva et al 46,55 In thermal degradation experiments, HEIA is often a significant component. It is a far less significant degradation component in cycled degradation setups and pilot plants.…”

“…This includes instrumentation for both gas and liquid chromatography (GC and LC, respectively), often coupled with mass spectrometry (MS) or other detectors. Common variations of GC and LC are GC−MS, 12,15,29,46,108−112 GC coupled with nitrogen chemoluminescence detection (GC-NCD) 56,104 or flame ionization detection (GC-FID), 113 LC with tandem mass spectrometry (LC−MS/MS), 27,29,46,54,56,109 high-performance LC (HPLC) 22,23,26,66,114,115 and HPLC coupled with time-offlight MS detection (HPLC TOF-MS). 66,108,116 Other important analytical methods include ion chromatography (IC), 15,22,23,26,27,46,54,66,108,109,111,115,116 capillary electrophores i s ( C E ) , 1 1 4 , 1 1 7 n u c l e a r m a g n e t i c r e s o n a n c e (NMR), 15,22,109,110,118 and Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR−MS).…”

“…One reason for the low abundance of cyclic degradation studies is the complexity of these rigs, in effect increasing the experimental cost. The following amines have been studied in cycled systems: MDEA, MEA, AMP, Pz, 2-methylpiperazine (2-MPZ), and MDEA/Pz. ,,,,, Mostly, the main focus of these studies has been assessing the solvents’ chemical stability when repeatedly exposed to low and high temperatures. However, one study also investigated how different inhibitors behave under these conditions …”