Structuring Cu/ZnO/Al2O3 catalyst for methanol synthesis: Slurry additive effect in the washcoating method

• Structuration of the CZA catalyst by washcoating was successfully obtained Inorganic colloids are crucial for obtaining good adherence on monolith Nevertheless, inorganic affect to catalytic properties Acidity like Al 2 O 3 and SiO is able dehydrate methanol DME CZA_10%Al formulation coated monoliths showed excellent activity performances. The best slurry prepare a structured synthesis reaction method investigated. effect different oxide in preparation Cu/ZnO/Al studied: colloidal ZnO, , . addition all these an improvement Fecralloy® monoliths, but exhibited performance. Adherence >80% with lower amount than other colloids. additives changes parent catalyst. Adding high decreases copper metallic surface area which active phase reaction. Moreover, gave rise dehydration dimethyl ether (DME) due acidity that presents. Something similar happens less extent present weak acidity. In contrast, basic character ZnO neutralizes catalyst's low reducing selectivity DME. Finally, containing 10% yield. Hence, prepared powder