Chemistry of Catalysis,Chemistry of Inorganic Materials、Photocatalysis
Research content keyword
①oxygen storage, CeO2, Temporal analysis of product
②aluminophosphate,microporous material,local structure substitution of metal ion
Research Title
Temporal analysis of products (TAP) study on oxygen storage properties over CeO2 and related catalysts, The oxygen storage capacity of CeO2, Ce0.9Pr0.1O2, Pt-Rh/CeO2, and Pt-Rh/Ce0.9Pr0.1O2 was investigated by conventional GC pulse method and transient pulse techniques. It is shown that incorporation of PrOy into CeO2 matrix strongly promotes oxygen storage capacity (OSC) measured by transient pulse technique. The improvement of OSC at low temperature is observed in Pt-Rh loaded into CeO2 and Ce-Pr catalysts. Ceria based materials are very important components of promoters for automotive three-way catalysts because of their oxygen storage capacity (OSC) that is based on the redox behavior between Ce3+ and Ce4+. Thus, OSC is very important for qualitative estimation of the amount of oxygen released and regained in the reduction-oxidation cycle. Up to now, OSC measurements have been carried out under ideal conditions, i.e., in a continuous mode. Such measurement conditions are far from real post-combustion operating conditions, when the exhaust gas composition rapidly oscillates between hydrocarbon-rich and hydrocarbon-poor (lean) mixtures. So, it is also worthwhile to investigate the OSC properties under trransient conditions. In previous study, based on the TPR measurements, it was found that the adsorption-desorption performance of oxygen on Pt-Rh /Ce0.9Pr0.1O2 are superior to those on Pt-Rh/CeO2 and Pt-Rh/Ce0.7Zr0.3O2. In this study, the oxygen storage capacity is studied over CeO2, Ce-Pr, Pt-Rh/CeO2 and Pt-Rh/Ce-Pr catalysts at various temperatures using the vacuum transient kinetic technique in the temporal analysis of products (TAP) reactor
Local Structure of metal ion substituted aluminophosphate
Synthesis of micro and mesoporous material
Temporal analysis of products (TAP) study on oxygen storage properties over CeO2 and related catalysts, OSC is very important for qualitative estimation of the amount of oxygen released and regained in the reduction-oxidation cycle. So, it is also worthwhile to investigate the OSC properties under transient conditions. In this study, TAP measurement was found that the adsorption-desorption performance of oxygen on Pt-Rh /Ce0.9Pr0.1O2 are superior to those on Pt-Rh/CeO2.
Local Structure of metal ion substituted aluminophosphate, Cu ion-exchanged SAPO-34 which is an high active catalyst for selective reduction of NO with C3H6, was synthesized and characterized the Cu ion in the SAPO-34 by ESR, XPS, IR, and XAFS. Two kinds of Cu(II) with different environment exist in SAPO-34. XPS study indicated that most of Cu(II) was reduced to Cu(I) under existence of C3H6.
Synthesis of micro and mesoporous material, mesoporous materials,microporous material,aluminophosphate
Temporal analysis of products (TAP) study on oxygen storage properties over CeO2 and related catalysts, The oxygen storage capacity of CeO2, Ce0.9Pr0.1O2, Pt-Rh/CeO2, and Pt-Rh/Ce0.9Pr0.1O2 was investigated by conventional GC pulse method and transient pulse techniques. It is shown that incorporation of PrOy into CeO2 matrix strongly promotes oxygen storage capacity (OSC) measured by transient pulse technique. The improvement of OSC at low temperature is observed in Pt-Rh loaded into CeO2 and Ce-Pr catalysts. Ceria based materials are very important components of promoters for automotive three-way catalysts because of their oxygen storage capacity (OSC) that is based on the redox behavior between Ce3+ and Ce4+. Thus, OSC is very important for qualitative estimation of the amount of oxygen released and regained in the reduction-oxidation cycle. Up to now, OSC measurements have been carried out under ideal conditions, i.e., in a continuous mode. Such measurement conditions are far from real post-combustion operating conditions, when the exhaust gas composition rapidly oscillates between hydrocarbon-rich and hydrocarbon-poor (lean) mixtures. So, it is also worthwhile to investigate the OSC properties under trransient conditions. In previous study, based on the TPR measurements, it was found that the adsorption-desorption performance of oxygen on Pt-Rh /Ce0.9Pr0.1O2 are superior to those on Pt-Rh/CeO2 and Pt-Rh/Ce0.7Zr0.3O2. In this study, the oxygen storage capacity is studied over CeO2, Ce-Pr, Pt-Rh/CeO2 and Pt-Rh/Ce-Pr catalysts at various temperatures using the vacuum transient kinetic technique in the temporal analysis of products (TAP) reactor
Local Structure of metal ion substituted aluminophosphate
Synthesis of micro and mesoporous material
Temporal analysis of products (TAP) study on oxygen storage properties over CeO2 and related catalysts, The oxygen storage capacity of CeO2, Ce0.9Pr0.1O2, Pt-Rh/CeO2, and Pt-Rh/Ce0.9Pr0.1O2 was investigated by conventional GC pulse method and transient pulse techniques. It is shown that incorporation of PrOy into CeO2 matrix strongly promotes oxygen storage capacity (OSC) measured by transient pulse technique. The improvement of OSC at low temperature is observed in Pt-Rh loaded into CeO2 and Ce-Pr catalysts. Ceria based materials are very important components of promoters for automotive three-way catalysts because of their oxygen storage capacity (OSC) that is based on the redox behavior between Ce3+ and Ce4+. Thus, OSC is very important for qualitative estimation of the amount of oxygen released and regained in the reduction-oxidation cycle. Up to now, OSC measurements have been carried out under ideal conditions, i.e., in a continuous mode. Such measurement conditions are far from real post-combustion operating conditions, when the exhaust gas composition rapidly oscillates between hydrocarbon-rich and hydrocarbon-poor (lean) mixtures. So, it is also worthwhile to investigate the OSC properties under trransient conditions. In previous study, based on the TPR measurements, it was found that the adsorption-desorption performance of oxygen on Pt-Rh /Ce0.9Pr0.1O2 are superior to those on Pt-Rh/CeO2 and Pt-Rh/Ce0.7Zr0.3O2. In this study, the oxygen storage capacity is studied over CeO2, Ce-Pr, Pt-Rh/CeO2 and Pt-Rh/Ce-Pr catalysts at various temperatures using the vacuum transient kinetic technique in the temporal analysis of products (TAP) reactor
Local Structure of metal ion substituted aluminophosphate
Synthesis of micro and mesoporous material
Papers
2004, Temporal analysis of products (TAP) study on oxygen properties over Pt-Rh/CeO2 catalyst, Catalyst and catalysis, 2004
2004, Estimation of theoretical oxygen permeation rate through La(Sr)Ga(Fe)O3 mixed conductor, Solid State Ionics, 2004
2004, Amperometric Solid-State Gas Sensor Using LaGaO3-Based Perovskite Oxide Electrolyte for Detecting Hydrocarbon in Exhaust Gas. II. Improvement of Inactive Electrode Performance., Journal of The Electrochemical Socirty, 2004
2004, An Amperometric Solid-State Gas Sensor Using a LaGaO3-Based Perovskite Oxide Electrolyte for Detecting Hydrocarbon in Exhaust Gas. A Bimetallic Anode for Improving Sensitivity at Low Temperature, Chemistry of Materials, 2004
2004, Oxide Ion Conductivity and Chemical Stability of Lanthanum Fluoraides Doped with Oxygen, La(Sr,Na)F3-2xOx, Chemistry of Materials, 2004
2004, Effect of crystal structure on photolysis of H2O on K-Ta mixed oxide, Journal of Photochemistry and Photobiology A:Chemistry, 2004
2004, Two step synthesis and characterization of thermally stable hexagonal zirconium phosphate, Material Letters, 2004
2004, Adsorption of water vapor on the ALPO4-based catalysts and reaction mechanism for CFCs Decomposition, Applied Catalysis A: General, 2004
2004, Improvement in aodic performance of Si for Li ion rechargeable battery by coating with carbon nanotubes, Solid State Ionics: The Science and Technology of Ions in Motion, 2004
2004, Electrochemical intercalation of PF6-ion in graphitic carbon as a new positive electrode for Li ion rechargeable battery, Solid State Ionics: The Science and Technology of Ions in Motion, 2004
2004, Improvement of anodic performance of Ni by additives on solid oxide fuel cells using LaGaO3 based oxide, Solid State Ionics: The Science and Technology of Ions in Motion, 2004
2004, Removal of Fluoride from water through ion exchange by mesoporous Ti oxohydroxide, Journal of Colloid and Interface Science, 2004
2004, Decomposition of CCI2F2 over metal sulfate catalysts, Catalysis Today, 2004
2004, Novel fast oxide ion conductor and application for the electrolyte of solid oxide fuel cell, Journal of the European Ceramic Society, 2004
2005, Decomposition of chlorobenzene over phosphate and sulfate catalysts, Bulletin of the Chemical Society of Japan, 2006
2005, Oxidative dehydrogenation of iso-butane to iso-butene III. Reaction mechanism over CePO4 catalyst, Applied Catalysis A: General, 2006
2005, Synthesis of a thermally stable mesoporous aluminophosphate by using sodium aluminate as precursor, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2005
2005, Optimized LiVOPO4 for Cathodes in Li-ion Rechargeable Batteries, Ionics, 2005
2005, Preparation of mesoporous nanocrystalline cerium phosphate with controllable pore size by using chelating agent, 2006
2005, Anaerobic oxidation of isobutaneII. Catalysis by Mg-V complex oxides, Anaerobic oxidation of isobutane Ⅱ.Catalysis by Mg-V complex oxides, 2006
2006, Ni/(Rare Earth Phospate) as a New Effective Catalyst for Autothermal of Methane, Chemistry Letters, 2006
2006, Synthesis and characterization of molybdenum incorporated mesoporous aluminophosphate, Applied Surface Science, 2006
2006, Synthesis and charactarization of a series of mesoporous nanocrystalline lanthanides phosphate, Journal of Porous Materials, 2006
2006, Redox properties of CeO2 and Pt-Rh/CeO2 studied by TAP method, Catalysis Letters, 2006
2006, Synthesis of Ni3C Nano-whisker from NiSO4 and Sucrose by Means of Spray Pyrolysis, Chemistry Letters, 2007
2008, Oxidative Reforming of n-Butane Triggered by Spontaneous Oxidation of CeO2-x at Ambient Temperature, Chemistry of Materials, 2008
2008, Anaerobic oxidation of isobutene: Catalytic propertied of MgVO6 and Mg2V2O7 prepared by the molten method, Journal of Molecular Catalysis A: Chemical, 2008
2008, Oxidative reforming of n-butane triggered from ambient tenperature by oxidation of Rh/CeO2 reduced at high tenperature, Journal of the Hydrogen Energy Systems Society of Japan, 2008
2008, Addition of Al2O3 or Cr2O3 Promotes Metal Reduction in a Co0- Ni0- Mg0 Solid Solution Catalyst for CH4/H2O Reforming, Chemistry Letters, 2008
2009, Oxidation of Rh/Ce0.5Zr0.502 Reduced under Mild Conditions as an Initiator of n-Butane Oxidative Reforming at Ambient Temperature, ChemSusChem, 2009