caa a22 4500 475844718 CHVBK 20180406123910.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1023/A:1019116117973 doi (NATIONALLICENCE)springer-10.1023/A:1019116117973 Fabrication and characterization of the Ag‐based high‐technology model nanocluster catalyst for ethylene epoxidation manufactured by electron beam lithography [Elektronische Daten] [Armen Avoyan, Günther Rupprechter, Aaron Eppler, Gabor Somorjai] Nanocluster catalysis is an area where greater fundamental knowledge is needed to understand the behavior of aggregates of metal atoms in determining product selectivity of chemical reactions. While catalysis is practiced industrially with economic success there is still a great need to eliminate wasteful side‐reactions which hurt overall yields. Here we report on fabrication of a Ag‐based high‐technology model nanocluster catalyst by using electron beam lithography (EBL) designed for systematic studies of the ethylene epoxidation reaction. The catalyst is made of a square array of cylinder‐shaped Ag nanoclusters that are 200 Å in diameter, deposited on a four inch silicon wafer, precovered with a 100 Å thick film of α‐alumina. The height of the particles and interparticle distance can vary, and were chosen to be 150-300 and 1000 Å, respectively. The high technology catalyst was characterized by X‐ray photoelectron spectroscopy (XPS), high‐resolution transmission electron microscopy (TEM), scanning electron microscopy (SEM), and atomic force microscopy (AFM). The thermal stability of Ag nanoclusters in vacuo was investigated. Kluwer Academic Publishers, 2000 electron beam lithography nationallicence ethylene epoxidation nationallicence nanocluster catalyst nationallicence Avoyan Armen Department of Chemistry, University of California, 94720, Berkeley, CA, USA aut Rupprechter Günther Department of Chemistry, University of California, 94720, Berkeley, CA, USA aut Eppler Aaron Department of Chemistry, University of California, 94720, Berkeley, CA, USA aut Somorjai Gabor Department of Chemistry, University of California, 94720, Berkeley, CA, USA aut Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 10/1-2(2000-03-01), 107-113 1022-5528 10:1-2<107 2000 10 11244 https://doi.org/10.1023/A:1019116117973 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1019116117973 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Avoyan Armen Department of Chemistry, University of California, 94720, Berkeley, CA, USA aut NATIONALLICENCE 700 1- Rupprechter Günther Department of Chemistry, University of California, 94720, Berkeley, CA, USA aut NATIONALLICENCE 700 1- Eppler Aaron Department of Chemistry, University of California, 94720, Berkeley, CA, USA aut NATIONALLICENCE 700 1- Somorjai Gabor Department of Chemistry, University of California, 94720, Berkeley, CA, USA aut NATIONALLICENCE 773 0- Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 10/1-2(2000-03-01), 107-113 1022-5528 10:1-2<107 2000 10 11244 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer