Pd–Au bimetallic catalysts supported on ZnO for selective 1,3-butadiene hydrogenation

Abstract

The effect of the ZnO morphology on the properties of Pd–Au bimetallic catalysts has been discussed.

One-pot, ligand-free, room-temperature synthesis of Au/Pd/ZnO nanoclusters with ultra-low noble metal loading and synergistically improved photocatalytic performances

“…[25][26][27] Meanwhile, Pd nanoparticles (NPs) has a higher electron trapping capability than Au and Ag NPs and consequently improves photocatalytic activity by inhibiting the recombination of photoinduced electron-hole pairs. [28][29][30] Hence, the combination of ZnO with noble metals to form noble metal/semiconductor hybrid nanostructures has been proposed as an efficient way to increase photocatalytic efficiency. [31][32][33] Bimetallic (such as AuPd, 24,[28][29][30]34,35,42 AuPt, [36][37][38][39] AgPd 40,41 ) NPs couple with semiconductors have better performance in comparison with monometallic NPs due to the synergistic effects.…”

Recent Advances in Supported Bimetallic Pd–Au Catalysts: Development and Applications in Organic Synthesis with Focused Catalytic Action Study

“…The zinc oxide (ZnO) supported Pd–Au BMC also have been developed and targeted for selective hydrogenation of 1,3-butadiene where the reaction performance completely relies on shape of ZnO support (Table , entry 17). In this work, the needle shaped ZnO (ZnO-n) support was found slightly more active than tetrapod shaped (ZnO-t) under studied catalyst reduction temperatures (i.e., 523 K, 623 K) and Pd–Au bimetallic combination leads to a slight improvement in selectivity toward the trans -2-butene product . To achieve the highest catalytic performance, various metal hydroxides have also been targeted as catalytic support, which led to some interesting organic transformations in an efficient way.…”

Bimetallic Au–Pd alloy nanoparticles supported on MIL-101(Cr) as highly efficient catalysts for selective hydrogenation of 1,3-butadiene

“…Bachiller-Baeza et al prepared bimetallic PdAu-ZnO-n and PdAu-ZnO-t catalysts with 0.3-0.4 Au : Pd mole ratio using two differently shaped ZnO supports (needles ZnO-n and tetrapods ZnO-t) by wet impregnation method. 86 They found that both bimetallic PdAu-ZnO-n and PdAu-ZnO-t catalysts displayed the similar BD conversion and selectivity in the selective BD hydrogenation reaction. 86 The BD conversions and butene selectivities over PdAu-ZnO-n and PdAu-ZnO-t were 92% and 23%, and 99% and 32%, respectively, at 40 C. 86 Hugon et al compared the catalytic properties of Al 2 O 3 supported bimetallic DP-Au/Pd(90) and monometallic DP-Au catalysts for the selective BD hydrogenation reaction.…”

“…86 They found that both bimetallic PdAu-ZnO-n and PdAu-ZnO-t catalysts displayed the similar BD conversion and selectivity in the selective BD hydrogenation reaction. 86 The BD conversions and butene selectivities over PdAu-ZnO-n and PdAu-ZnO-t were 92% and 23%, and 99% and 32%, respectively, at 40 C. 86 Hugon et al compared the catalytic properties of Al 2 O 3 supported bimetallic DP-Au/Pd(90) and monometallic DP-Au catalysts for the selective BD hydrogenation reaction. 87 The results showed that bimetallic DP-Au/Pd(90) catalyst presented better catalytic active than the monometallic DP-Au catalyst: BD conversion is reached 100% at 120 C and 170 C, respectively.…”