Table 1.
Normalized CID Neutral Loss/Product Ion Abundances for the Carbamate Derivatives of CO2 Capture Amines Investigated in this Work. T-cell bias = 12 V. Dissociation Products Specific to a Particular Carbamate are not Presented
| Normalized carbamate CID product abundance (%), T-cell bias = 12 V | ||||||
|---|---|---|---|---|---|---|
| R-carbamate, R = | 2-hydroxyethyl | 2-aminoethyl | Bis(2-hydroxyethyl) | Piperazine-1a | (1-hydroxypropan-2-yl) | 1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl |
| Parent amine (see Figure 1) | MEA | EN | DEA | Pz | AMP | Tris |
| Neutral loss/product ion: | ||||||
| -H2O | 1.3 | 32.0 | 4.7 | − | − | 18.9 |
| -2 × H2O | − | − | 0.6 | − | − | 2.0 |
| -CO2 | 76.1 | 40.8 | 72.0 | 84.4 | 89.1 | 54.9 |
| -46 | 19.2 | 20.0 | 12.3 | 13.7 | 10.9 | 2.4 |
| -48 | 2.3 | 2.9 | − | − | − | − |
| NCO– | 0.1 | 3.2 | <0.1 | − | − | − |
| CN– | 1.0 | 1.2 | − | − | − | − |
aPiperazine-1-carboxylate