1 research outputs found
Tungsten-Doped Molybdenum Sulfide with Dominant Double-Layer Structure on Mixed MgAl Oxide for Higher Alcohol Synthesis in CO Hydrogenation
Improving
the C<sub>2</sub>+ alcohols selectivity is highly desirable
for higher alcohols synthesis in CO hydrogenation. Herein, an effective
method was developed for Mo-based supported catalysts by the combination
of tungsten-doping and surfactant-assisted hydrothermal strategy.
The tungsten-doping enhanced the interaction between Ni and W/Mo metal
species to form more of the Ni-MoW-S phase with tunable slab size
and stacking layers, and thus promoted the chain growth of alcohol
to form a greater amount of higher alcohols in CO hydrogenation. The
optimal K,Ni–Mo<sub>0.75</sub>W<sub>0.25</sub>/MMO-S exhibited
a dominant double-layer structure (∼39.0%) and highly synergetic
effects between Ni and W/Mo species, resulting in the highest total
alcohol selectivity (76.1%) and in higher alcohols selectivity. This
work provides a new route for tuning the morphology of MoS<sub>2</sub>/WS<sub>2</sub> and synergetic effects between Ni and W/Mo species
in supported catalysts to improve the selectivity of higher alcohols