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Article
Cyclohexane photooxidation under visible light irradiation by WO3–TiO2 mixed catalysts
Cyclohexane photocatalytic oxidation was performed over WO3 photocatalysts under visible light irradiation with molecular oxygen. Cyclohexanone and cyclohexanol were obtained with high selectivity. The yield of c...
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Chapter
Photocatalytic Decomposition of NH3 Over Fe-Doped TiO2 Prepared by Solid-State Impregnation
Pt/Fe-TiO2 photocatalysts which deposited Pt on Fe-doped TiO2 catalyzed the photodecomposition of NH3 aqueous solution to H2 and N2 under UV irradiation at room temperature. In addition, it was indicated that hyd...
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Chapter
Application of Metal Ion Implantation for the Design of Visible Light-Responsive Titanium Oxide Photocatalysts
An ion beam technology using accelerated metal ions, a metal ion implantation and an ionized cluster beam (ICB) method have been applied to design unique photocatalysts as new concept for the design of effecti...
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Article
XAFS study of the complex of an acetylacetonate-based ligand and copper ion
An X-ray absorption fine structure (XAFS) study has been conducted to reveal the local structure and chemical state of the copper in the complex of an acetylacetonate-based ligand (L1) and copper ion in acetonitr...
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Article
Photodecomposition of water with methane over titanium oxide photocatalysts modified with metal
Metal-loaded titanium oxide photocatalysts produced hydrogen in the photodecomposition of water vapor with methane in the flow reactor. Ag/TiO2 has the highest activity in comparison with other metal-loaded catal...
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Article
One-Step Oxidation of Benzene to Phenol over Cu/Ti/HZSM-5 Catalysts
The gas-phase catalytic oxidation of benzene over copper supported on HZSM-5 added with titanium (Cu/Ti/HZSM-5) was carried out by using molecular oxygen as an oxidant. Phenol was effectively produced by the t...
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Article
Direct photo-oxidation of benzene to phenol over Ti/Si binary oxide prepared by sol-gel method
Titanium-silicon (Ti/Si) binary oxides having a varying Ti content were prepared using the sol-gel method and used as photocatalysts. The photo-oxidation of benzene to phenol was carried out using Ti/Si binary...
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Article
Liquid-Phase Oxidation of Benzene to Phenol by Molecular Oxygen over La Catalysts Supported on HZSM-5
The liquid-phase oxidation of benzene to phenol over lanthanum oxide catalysts (LaOx/HZSM-5) supported on HZSM-5 was studied in the presences of oxygen as an oxidant and ascorbic acid as a reducing regent. LaOx/H...
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Article
Effect of H2O on the partial photo-oxidation of ethylene over Cu/SiO2 photocatalyst
Ethylene can be catalytically photo-oxidised with water as an oxidant over silica-supported copper oxide evacuated at 973 K. Presence of Cu+ cations in the catalyst is evidenced by X-ray Absorption Near-Edge Stru...
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Article
Catalytic Methanol Decomposition Over Palladium Deposited on Mesoporous Cerium Oxide
Ultrafine palladium particles can be deposited on mesoporous cerium oxide by a deposition–precipitation method. After reduction with hydrogen at 300 °C, palladium on the mesoporous compound is cationic with a ...
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Article
Methanol Synthesis from Carbon Monoxide and Hydrogen over Ceria-Supported Copper Catalyst Prepared by a Coprecipitation Method
High catalytic activity in the synthesis of methanol from carbon monoxide and hydrogen can be produced with ceria-supported copper catalysts prepared by a coprecipitation method. The activity at 468 K is compa...
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Article
A Comparative Study of Palladium and Copper Catalysts in Methanol Synthesis
Catalytic activity of copper supported on cerium oxide (Cu/CeO2) in methanol synthesis from carbon monoxide and hydrogen at 473 K is similar to that of ceria-supported palladium (Pd/CeO2). Both catalysts contain ...
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Article
Catalytic Activity of Palladium Supported on Mesoporous Zirconium Oxide in Low-Temperature Methanol Decomposition
Methanol decomposition to hydrogen and carbon monoxide can be effectively catalyzed at 160–220°C over palladium supported on mesoporous zirconium oxide by the deposition–precipitation method. The electronic st...
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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...
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Article
Structural change of palladium particles supported on cerium oxide in catalytic methanol synthesis
Ultrafine palladium particles supported on cerium oxide by the coprecipitation method effectively catalyzes the methanol synthesis from carbon monoxide and hydrogen, while the catalytic activity increases in t...
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Article
Methanol synthesis from carbon monoxide and hydrogen catalyzed over Pd/CeO2 prepared by the deposition–precipitation method
Ceria‐supported palladium catalysts prepared by the deposition–precipitation method are highly active for the methanol synthesis from carbon monoxide and hydrogen in comparison with the catalyst prepared by th...
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Article
Characterization of Ti/Si binary oxides prepared by the sol-gel method and their photocatalytic properties: The hydrogenation and hydrogenolysis of CH3CCH with H2O
Titanium-silicon (Ti/Si) binary oxides having different Ti content were prepared by the sol-gel method and utilized as photocatalysts for the hydrogenation and hydrogenolysis of CH2CCH with H2O. The photocatalyti...
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Article
Photoluminescence properties of tetrahedral titanium oxide species in zeolitic materials
The photoluminescence spectra of the Y‐type zeolite modified with titanium ions and Ti‐silicalite‐1 have been investigated by varying the excitation energy. A three‐dimensional image of the photoluminescence s...
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Article
Design of unique titanium oxide photocatalysts by an advanced metal ion-implantation method and photocatalytic reactions under visible light irradiation
The metal ion-implantation of titanium oxide with various transition metal ions was carried out by applying by high voltage acceleration. The subsequent calcination of the implanted TiO2 in oxygen at around 723 K...
