Zeolite catalyst | A║ [mT] | g║ | g⊥ | Intensity of EPR catalyst signal [a. u.] |
---|---|---|---|---|
Cu-MFIa | 12.0 | 2.371 | 2.129 | 17.25 |
Cu,Al-MFIc | 12.4 | 2.372 | 2.072 | 2.53 |
Cu,Zn-MFId | 12.4 | 2.392 | 2.081 | 1.83 |
Zeolite catalyst | Method of preparation | Si/Al ratio | Copper content [wt.%] | Surface area [m2·g−1] | Pore volume [cm3·g−1] |
---|---|---|---|---|---|
Cu-MFIa | ion exchange | 40 | 1.92 | 395.2 | 0.175 |
Cu-MFIb | ion exchange | 28 | 3.65 | 425.6 | 0.193 |
Cu,Al-MFIc | direct hydrothermal synthesis | 40 | 3.65 | 0.56 | 0.160 |
Cu,Al-MFId 1.14 wt.% of Zn (no Al) | direct hydrothermal synthesis | →∞ | 1.39 | 423.6 | 0.209 |