TY - JOUR T1 - Propylene hydrogenation over cubic Pt nanoparticles deposited on alumina JF - BULLETIN-KOREAN CHEMICAL SOCIETY Y1 - 2004 A1 - Yoo, J. W. A1 - Lee, S.M. A1 - Kim, H.T. A1 - El-Sayed, Mostafa A AB - Pt nanoparticles loaded on alumina through an impregnation at room temperature was prepared using K2PtCl4 and acrylic acid as capping material. Transmission electron microscopy showed that the deposited Pt particles indicate ca. 80% cubic shapes with a narrow distribution of 8-10 nm in size. Propylene hydrogenation over the catalyst has been carried out to evaluate their catalytic performance by the values of activation energy. It is determined from the initial rate, reaction order, and rate constant and is found to be 9.7 ± 0.5 kcal/mol. This value has been discussed by comparing to those of encapsulated- and truncated octahedral Pt nanoparticles deposited on alumina, respectively, to study influence of the particle size and shape, and capping material used on the activation energy. PB - Korean Chemical Society VL - 25 SN - 0253-2964 UR - http://www.journal.kcsnet.or.kr/main/j_search/j_abstract_view.htm?code=B040616&qpage=j_search&spage=b_bkcs&dpage=ar CP - 6 ER - TY - JOUR T1 - Shape control of platinum nanoparticles by using different capping organic materials JF - BULLETIN-KOREAN CHEMICAL SOCIETY Y1 - 2004 A1 - Yoo, J. W. A1 - Lee, S.M. A1 - Kim, H.T. A1 - El-Sayed, Mostafa A KW - Cube KW - Nanoparticle KW - Platinum KW - Transmission electron microscopy KW - Truncated octahedra AB - No Abstract VL - 25 UR - http://newjournal.kcsnet.or.kr/main/j_search/j_abstract_view.htm?code=B040315&qpage=j_search&spage=b_bkcs&dpage=ar CP - 3 ER -