One Step Dimethyl Ether (DME) Synthesis from CO2 Hydrogenation over Hybrid Catalysts Containing Cu/ZnO/Al2O3 and Nano-Sized Hollow ZSM-5 Zeolites

Karima Krim (1) , Alexander Sachse (2) , Anthony Le Valant (2) , Yannick Pouilloux (2) , Smain Hocine (1)

1 LCAGC - Laboratoire de Chimie appliquée & génie chimique [Tizi-Ouzou]
2 IC2MP [Poitiers] - Institut de chimie des milieux et matériaux de Poitiers [UMR 7285]

The study has focused on the development of bifunctional catalytic materials for the direct DME synthesis from CO 2 /H 2. The industrial Cu/ZnO/Al 2 O 3 is used as the copper based catalyst for the first step of the methanol synthesis from CO 2 / H 2. It will be combined with hollow nano-ZSM-5 zeolites with mesoporous shell as the acid catalyst of the second step the methanol dehydration to DME. The bifunctional materials will be tested in the direct DME synthesis from CO 2 /H 2 under the following conditions: T = 225 °C, p = 30 bar, H 2 /CO 2 = 3. Under our reaction conditions, CO was not observed, only the DME majority product (77.5%) and CH 3 OH (22.5%) were obtained.

Mots clés: DME synthesis; CO2 hydrogenation; Nano-sized hollow ZSM-5; Cu/ZnO/Al2O3

Domaines: Chimie organique; Catalyse

Karima Krim, Alexander Sachse, Anthony Le Valant, Yannick Pouilloux, Smain Hocine. One Step Dimethyl Ether (DME) Synthesis from CO2 Hydrogenation over Hybrid Catalysts Containing Cu/ZnO/Al2O3 and Nano-Sized Hollow ZSM-5 Zeolites. Catalysis Letters, 2023, 153, pp.83-94. ⟨10.1007/s10562-022-03949-w⟩. ⟨hal-03647214⟩