000199686 001__ 199686
000199686 005__ 20181203023521.0
000199686 0247_ $$2doi$$a10.1002/cctc.201301043
000199686 022__ $$a1867-3880
000199686 02470 $$2ISI$$a000332072300017
000199686 037__ $$aARTICLE
000199686 245__ $$aSize and Shape-controlled Pd Nanocrystals on ZnO and SiO2: When the Nature of the Support Determines the Active Phase
000199686 260__ $$aWeinheim$$bWiley-VCH Verlag Berlin$$c2014
000199686 269__ $$a2014
000199686 300__ $$a5
000199686 336__ $$aJournal Articles
000199686 520__ $$aThe structure sensitivity of acetylene hydrogenation was studied over size-controlled cubic and octahedral Pd nanocrystals (NCs) supported on ZnO and SiO2. Acetylene hydrogenation was found to be structure sensitive [with Pd(111) in octahedra being more active than Pd(100) in cubes]. However, the response was found to vary depending on the redox properties of the support. The catalytically active and selective palladium carbide (PdCx) phase was readily formed on the SiO2-supported Pd NCs (much faster on cubes than on octahedra), whereas a markedly less active PdZn phase was preferentially formed on the ZnO-supported Pd nanocrystals. Here we show that the structure sensitivity of a chemical reaction is a complex phenomenon that originates from the reconstruction of the active phase in response to the reactive environment, which is ultimately determined by the support used.
000199686 6531_ $$aacetylene
000199686 6531_ $$acarbide
000199686 6531_ $$ahydrogenation
000199686 6531_ $$ananocrystals
000199686 6531_ $$apalladium
000199686 6531_ $$astructure sensitivity
000199686 6531_ $$asupport effects
000199686 700__ $$0242306$$aCrespo-Quesada, Micaela$$g177765$$uEcole Polytech Fed Lausanne, Grp Catalyt React Engn, CH-1015 Lausanne, Switzerland
000199686 700__ $$aYoon, Songhak$$uSwiss Fed Labs Mat Sci & Technol, Lab Solid State Chem & Catalysis, CH-8600 Dubendorf, Switzerland
000199686 700__ $$aJin, Mingshang$$uFrontier Inst Sci & Technol, Met Nanomat & Catalysis Res Grp, Xian 710054, Peoples R China
000199686 700__ $$aXia, Younan$$uGeorgia Inst Technol, Sch Chem & Biochem, Wallace H Coulter Dept Biomed Engn, Atlanta, GA 30332 USA
000199686 700__ $$aWeidenkaff, Anke$$uSwiss Fed Labs Mat Sci & Technol, Lab Solid State Chem & Catalysis, CH-8600 Dubendorf, Switzerland
000199686 700__ $$0240077$$aKiwi-Minsker, Lioubov$$g105553$$uEcole Polytech Fed Lausanne, Grp Catalyt React Engn, CH-1015 Lausanne, Switzerland
000199686 773__ $$j6$$k3$$q767-771$$tChemcatchem
000199686 909C0 $$0252033$$pLGRC$$xU10178
000199686 909CO $$ooai:infoscience.tind.io:199686$$particle
000199686 917Z8 $$x175844
000199686 937__ $$aEPFL-ARTICLE-199686
000199686 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000199686 980__ $$aARTICLE