NISHIGUCHI　Hiroyasu

Profile

Faculty

Research Promotion ProjectAssociate Professor

Name

NISHIGUCHI　Hiroyasu

Degree(1)

• Dr. of Engineering（ Osaka prefecture university）, 大阪府立大学, Mar. 1990

Address

nishigucoita-u.ac.jp, http://www.appc.oita-u.ac.jp/physchem/index.html

Education

Classes

• 2004
• 2004
• 2004
• 2005
• 2005
• 2005
• 2005, Experiment of Physical Chemistry
• 2005, Industrial Chemistry I
• 2005, Industrial Chemistry II
• 2005, Entry of Applied Chemistry1
• 2005, Entry of Applied Chemistry2
• 2006
• 2006
• 2006
• 2008
• 2008
• 2008
• 2009
• 2009
• 2009
• 2010
• 2011
• 2011

Research Achievements

Field of Study

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

Books

• 2005, 1, 講談社サイエンティフィク, 2005

Industrial Property

• 2005, A
• 2005, A
• 2005, A
• 2005, A
• 2006
• 2006

Learned Societies to Belong

• The Japan Petoroleum Institute
• Japanese Photochemistry Association
• Catalysis Society of Japan
• American Chemical Society
• Electrochemical Society of Japan

Grant-in-aid for Scientific Research

• Refference catalysts ZrO2, 2006
• Homeostasis, 2006

Collaborative Research and Sponsored Research

• 2005, 革新的次世代低公害車総合技術開発　革新的後処理システムの研究開発
• 2005, 触媒性能に及ぼす金属複合酸化物の担体効果に関する研究II
• 2005, 触媒性能に及ぼす金属複合酸化物の担体効果に関する研究III
• 2006, 触媒性能に及ぼす金属複合酸化物の担体効果に関する研究III
• 2006, 革新的次世代低公害車総合技術開発　革新的後処理システムの研究開発　ナノテクノロジーを応用した高性能排ガス浄化触媒の研究開発
• 2006, 水浄化に関する研究

Social Contribution

Social Activities

• 2008

International Research Project

• 2008