Formation and properties of nanostructured colloidal manganese oxide particles obtained through the thermally controlled transformation of manganese carbonate precursor phase

In situ Generation of Intimacy in MnOx+SAPO‐34 Mechanical Mixture for the Conversion of Syngas to Light Olefins

“…TEM images of the prepared MnCO 3 precursor show well defined spherical porous nanoparticles with a mean diameter of 466±44 nm (Figures 2a and b). SEM image of MnO x (Figure 2c) shows that the morphology has been retained after thermal treatment and further reveals that the porous spheres are composed of smaller nanoparticles when the thermal treatment temperature remains below 900 °C, as reported in the literature [16] . The adsorption isotherms of the solids before and after thermal treatment were of type V with H 2 hysteresis (Figure S1) [17–19] revealing the presence of mesoporosity in the solids.…”

“…SEM image of MnO x (Figure 2c) shows that the morphology has been retained after thermal treatment and further reveals that the porous spheres are composed of smaller nanoparticles when the thermal treatment temperature remains below 900 °C, as reported in the literature. [16] The adsorption isotherms of the solids before and after thermal treatment were of type V with H 2 hysteresis (Figure S1) [17][18][19] revealing the presence of mesoporosity in the solids. The mesopore diameter strongly increased from 8 to 24 nm upon thermal treatment (Figure S2).…”