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- Publications
- Influence
Chemoselective Hydrogenation of Nitroaromatics by Supported Gold Catalysts: Mechanistic Reasons of Size- and Support-Dependent Activity and Selectivity
- K. Shimizu, Y. Miyamoto, T. Kawasaki, T. Tanji, Y. Tai, A. Satsuma
- Chemistry
- 16 September 2009
Supported Au nanoparticles (NPs) prepared by colloid deposition method were well characterized, and their catalytic performance was tested for chemoselective reduction of a nitro group of substituted… Expand
C-3 alkylation of oxindole with alcohols by Pt/CeO2 catalyst in additive-free conditions
- Chandan Chaudhari, S. A. Siddiki, K. Kon, A. Tomita, Y. Tai, K. Shimizu
- Chemistry
- 11 March 2014
In a series of transition metal-loaded CeO2 catalysts and Pt-loaded catalysts on various supports, Pt-loaded CeO2 shows the highest activity for the selective C-3 alkylation of oxindole with octanol.… Expand
Mechanism of Low-Temperature CO Oxidation on Pt/Fe-Containing Alumina Catalysts Pretreated with Water
- A. Tomita, K. Shimizu, K. Kato, T. Akita, Y. Tai
- Chemistry
- 7 January 2013
In a previous article (Catal. Commun. 2012, 17, 194), we reported that Pt/Fe-containing alumina catalysts pretreated with water could catalyze CO oxidation even below room temperature. To clarify the… Expand
Structures and CO oxidation activities of size-selected Au nanoparticles in mesoporous titania-coated silica aerogels
- Y. Tai, W. Yamaguchi, K. Tajiri, H. Kageyama
- Chemistry
- 31 July 2009
Abstract We have prepared Au/Titania-coated silica aerogel catalysts from Au nanoparticles (AuNPs) having well-regulated sizes in the range 1.4–6.4 nm, through heat-treatment of thiol-capped AuNPs,… Expand
Depletion of CO oxidation activity of supported Au catalysts prepared from thiol-capped Au nanoparticles by sulfates formed at Au–titania boundaries: Effects of heat treatment conditions on catalytic…
- Y. Tai, W. Yamaguchi, +5 authors H. Kageyama
- Chemistry
- 1 April 2010
Abstract We have investigated the effects of heat treatment in air and H 2 /Ar on Au/titania-coated silica aerogel catalysts prepared through adsorption of thiol-capped Au nanoparticles (AuNPs).… Expand
Pt/Fe-containing alumina catalysts prepared and treated with water under moderate conditions exhibit low-temperature CO oxidation activity
- A. Tomita, K. Shimizu, K. Kato, Y. Tai
- Materials Science
- 5 January 2012
Abstract Pt/Fe-containing alumina catalysts were prepared and treated with water under moderate conditions. From transmission electron microscopy and Pt LIII extended X-ray absorption fine structure… Expand
Excimer formation of pyrene as a probe to investigate the recombination of geminate pairs : ODESR and fluorescence study of dilute pyrene in squalane
- M. Okazaki, Y. Tai, R. Nakagaki, K. Nunome, K. Toriyama
- Chemistry
- 23 February 1990
Abstract It is shown that the monomer fluorescence and the excimer fluorescence from a dilute pyrene solution in squalane at room temperature are mainly from “delayed” geminate pairs (Py−, S+) and… Expand
Synthesis of Zinc Sulfide Nanocrystals and Fabrication of Nanocrystal Superlattice
- T. Kuzuya, Y. Tai, S. Yamamuro, T. Hihara, D. Peng, K. Sumiyama
- Materials Science
- 20 August 2004
We report synthesis of zinc sulfide nanocrystals (NCs) via formation of polymetallic thiolate cages. Nearly monodisperse ZnS NCs with size ranging from 2.2 to 7 nm were obtained by thermolysis of… Expand
Selective hydrogenation of nitrocyclohexane to cyclohexanone oxime by alumina-supported gold cluster catalysts
- K. Shimizu, T. Yamamoto, Y. Tai, A. Satsuma
- Chemistry
- 5 July 2011
Abstract Metal oxides (Al2O3, SiO2, MgO)-supported Au cluster catalysts prepared by colloid deposition method and well established Au/TiO2 prepared by deposition–precipitation method were tested for… Expand
Size- and support-dependent selective amine cross-coupling with platinum nanocluster catalysts
- K. Shimizu, K. Ohshima, Y. Tai, Masazumi Tamura, A. Satsuma
- Chemistry
- 29 March 2012
γ-Alumina-supported Pt nanoclusters with an average particle size of 0.8 nm, Pt/Al2O3-0.8, act as an effective heterogeneous catalyst for mono-N-alkylation of amines with different amines. To… Expand