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Atomically Precise Strategy to a PtZn Alloy Nanocluster Catalyst for the Deep Dehydrogenation of n -Butane to 1,3-Butadiene

2018-11-02
Camacho-Bunquin, Jeffrey
Ferrandon, Magali S.
Sohn, Hyuntae
Kropf, A. Jeremy
Yang, Ce
Wen, Jianguo
Hackler, Ryan A.
Liu, Cong
Çelik, Gökhan
Marshall, Christopher L.
Stair, Peter C.
Delferro, Massimiliano
The development of on-purpose 1,3-butadiene (BDE) technologies remains an active area in catalysis research, because of the importance of BDE in industrial polymer production. Here, we report on a nonoxidative dehydrogenation catalyst for the production of BDE prepared by atomically precise installation of platinum sites on a Zn-modified SiO2 support via atomic layer deposition (ALD). In situ reduction X-ray absorption spectroscopy (XAS), X-ray photoelectron spectroscopy (XPS), CO chemisorption, and high-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM) imaging of activated PtZn/SiO2, revealed the formation of a uniform, well-distributed subnanometer- to nanometer-sized PtZn (1.2 +/- 0.3 nm) alloy as the active catalytic species.