Multicomponent Pt-Based Zigzag Nanowires as Selectivity Controllers for Selective Hydrogenation Reactions.

Area of Science:

• Heterogeneous catalysis
• Materials science
• Organic synthesis

Background:

• Selective hydrogenation of α, β-unsaturated aldehydes is critical but challenging due to multiple reactive sites.
• Developing catalysts with high selectivity for specific products (unsaturated alcohols or saturated aldehydes) remains a key goal.

Purpose of the Study:

• To investigate platinum-based zigzag nanowires (ZNWs) as selective hydrogenation catalysts.
• To control selectivity towards unsaturated alcohols (UOL) and saturated aldehydes (SA) in α, β-unsaturated aldehyde hydrogenation.

Main Methods:

• Synthesis of a series of Pt-based ZNWs.
• Testing catalyst performance in α, β-unsaturated aldehyde hydrogenation reactions.
• Analysis of surface properties and composition to understand selectivity.

Main Results:

• PtFe ZNWs demonstrated excellent UOL selectivity (>95%).
• PtFeNi ZNWs combined with AlCl₃ achieved high SA selectivity (>94%).
• Lower electron density of surface Pt atoms in PtFe ZNWs correlated with UOL selectivity.
• Synergistic effects between PtFeNi ZNWs and AlCl₃ contributed to SA selectivity.

Conclusions:

• Pt-based ZNWs act as effective selectivity controllers in α, β-unsaturated aldehyde hydrogenation.
• Precisely controlled surface and composition of Pt-based NWs are vital for catalytic performance.
• This work highlights the potential of engineered nanomaterials for selective chemical transformations.