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  1. No Access

    Article

    Ethanol Oxidation in Water Catalyzed by Gold Nanoparticles Supported on NiO Doped with Cu

    Ethanol oxidation in water by molecular oxygen on supported gold nanoparticles (NPs) has been investigated at a temperature as low as 120 °C. Among various base metal oxide supports, NiO provided the highest c...

    Takashi Takei, Junya Suenaga, Tamao Ishida, Masatake Haruta in Topics in Catalysis (2015)

  2. No Access

    Article

    Gas-phase propene epoxidation over coinage metal catalysts

    Propene oxide (PO) is a very important bulk chemical and is produced on a scale of about 7.5 million tons per year. In industry, PO is produced via multiple reaction steps in the liquid phase, using hazardous ...

    Jiahui Huang, Masatake Haruta in Research on Chemical Intermediates (2012)

  3. No Access

    Article

    Synthesis of Acetoaldehyde, Acetic Acid, and Others by the Dehydrogenation and Oxidation of Ethanol

    Following gradual shift of primary resources from fossil towards renewable ones in chemical industry, biomass based ethanol has been attracting growing interests as a fuel to replace gasoline and as a chemical...

    Takashi Takei, Norihiko Iguchi, Masatake Haruta in Catalysis Surveys from Asia (2011)

  4. No Access

    Article

    Gas-phase radical generation by Ti oxide clusters supported on silica: application to the direct epoxidation of propylene to propylene oxide using molecular oxygen as an oxidant

    A new catalytic system consisting of titanium oxide clusters supported on silica was found for radical production at relatively low temperature (~573 K). The clusters give rise to selective oxidation products,...

    Naoki Mimura, Susumu Tsubota, Kazuhisa Murata, Kyoko K. Bando… in Catalysis Letters (2006)

  5. No Access

    Article

    Effect of Impurity and Pretreatment Conditions on the Catalytic Activity of Au Powder for CO Oxidation

    Recent X-ray photoelectron spectrometer(XPS) analysis of Au powder synthesized by evaporating high purity gold metal (> 99. 99%) in an inert gas detected impurity metals such as Ag and In at levels which far e...

    Yasuo Iizuka, Aya Kawamoto, Kazuhiro Akita, Masakazu Daté… in Catalysis Letters (2004)

  6. No Access

    Article

    Catalysis of Gold Nanoparticles Deposited on Metal Oxides

    Gold in bulk is chemically inert and has often been regarded to be poorly active as a catalyst. However, when gold is small enough—with particle diameters below 10 nm—it turns out to be surprisingly active for...

    Masatake Haruta in CATTECH (2002)

  7. No Access

    Article

    Growth of Pd particles in methanol synthesis over Pd/CeO2

    The metal–support contact structure of Pd–CeO2 changed with increasing the temperature of reduction. Upon high temperature reduction, severe sintering of Pd particles occurred, while sintering of the ceria suppor...

    Wen-Jie Shen, Atsuko Kobayashi, Yuichi Ichihashi, Yasuyuki Matsumura… in Catalysis Letters (2001)

  8. No Access

    Article

    Effect of calcination temperature on the catalytic activity of Au colloids mechanically mixed with TiO2 powder for CO oxidation

    In order to elucidate the role of the contact structure between gold and metal oxide support in low-temperature CO oxidation, a mechanical mixture of colloidal gold with TiO2 powder was prepared and calcined at d...

    Susumu Tsubota, Toshiko Nakamura, Koji Tanaka, Masatake Haruta in Catalysis Letters (1998)

  9. No Access

    Article

    A kinetic study of methanol decomposition catalyzed over plate-type palladium catalyst

    A kinetic study of the catalytic methanol decomposition to carbon monoxide and hydrogen has been carried out in the pressure range of methanol up to 8 atm at 200 and 250°C over a palladium catalyst supported o...

    Shinji Shiizaki, Ikuo Nagashima, Yasuyuki Matsumura, Masatake Haruta in Catalysis Letters (1998)

  10. No Access

    Article

    Effect of support on the conversion of methane to synthesis gas over supported iridium catalysts

    A partial oxidation of methane was carried out using iridium catalysts supported on several metal oxides. The productivity of the synthesis gas from methane was strongly affected by the choice of support oxide...

    Kiyoharu Nakagawa, Kengo Anzai, Naoko Matsui, Naoki Ikenaga… in Catalysis Letters (1998)

  11. No Access

    Article

    Chemical vapor deposition of gold on Al2O3, SiO2, and TiO2 for the oxidation of CO and of H2

    In order to clarify the effect of metal oxide support on the catalytic activity of gold for CO oxidation, gold has been deposited on SiO2 with high dispersion by chemical vapor deposition (CVD) of an organo-gold ...

    Mitsutaka Okumura, Shyunichi Nakamura, Susumu Tsubota… in Catalysis Letters (1998)

  12. No Access

    Article

    Novel catalysis of gold deposited on metal oxides

    Gold exhibits a unique catalytic nature and action when it is deposited as nanoparticles on a variety of metal oxides. Most reactions are noticeably structure sensitive over such supported gold catalysts. Typi...

    Masatake Haruta in Catalysis Surveys from Asia (1997)