Currently, the use of syngas obtained from CO2-rich Natural Gas for the production of liquid fuels is strongly limited, considering that CO2 is hardly and uneconomically convertible via Fischer-Tropsch process [1]. However, the direct hydrogenation of CO2 into DME (as a modern "energy vector" for stationary/automotive applications) is attracting more and more research interest [2], allowing to achieve an effective recycling and utilization of atmospheric CO2, also making sustainable the whole process chain if hydrogen can be produced from renewable sources. Recently, it has been demonstrated how the development of new hybrid multi-component systems based on CuZnZr-zeolite for the one-pot CO2-to-DME hydrogenation is fundamental not only to achieve high CO2 conversion rates, but also to maximize DME selectivity. Despite these interesting catalytic results obtained in presence of bifunctional Cu-based catalyst formulations [3-4], many aspects concerning the catalytic functionality and stability of these nano-hybrid systems are still to be clarified, so that this work aims to identify the key aspects inducing deactivation during reaction, through a systematic analysis of the catalyst surface prior (calcined/reduced samples), during (analysis "in operando") and after reaction (used samples).
CO2 conversion to MeOH-DME fuels: catalytic and technological aspects
F Frusteri;C Cannilla;F Costa;A Mezzapica;G Bonura
2019
Abstract
Currently, the use of syngas obtained from CO2-rich Natural Gas for the production of liquid fuels is strongly limited, considering that CO2 is hardly and uneconomically convertible via Fischer-Tropsch process [1]. However, the direct hydrogenation of CO2 into DME (as a modern "energy vector" for stationary/automotive applications) is attracting more and more research interest [2], allowing to achieve an effective recycling and utilization of atmospheric CO2, also making sustainable the whole process chain if hydrogen can be produced from renewable sources. Recently, it has been demonstrated how the development of new hybrid multi-component systems based on CuZnZr-zeolite for the one-pot CO2-to-DME hydrogenation is fundamental not only to achieve high CO2 conversion rates, but also to maximize DME selectivity. Despite these interesting catalytic results obtained in presence of bifunctional Cu-based catalyst formulations [3-4], many aspects concerning the catalytic functionality and stability of these nano-hybrid systems are still to be clarified, so that this work aims to identify the key aspects inducing deactivation during reaction, through a systematic analysis of the catalyst surface prior (calcined/reduced samples), during (analysis "in operando") and after reaction (used samples).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
