Analyses of the Adsorption Structures of Friction Modifiers by Means of Quantitative Structure-Property Relationship Method and Sum Frequency Generation Spectroscopy

スポンサーリンク

概要

• 論文の詳細を見る

• Blending an optimum amount of friction modifiers into lubricant is one of the important measures to reduce fuel consumption induced by the frictional loss for automobiles. However, the agents containing metal or phosphorus compounds can cause catalyst poisoning and clogging in the filters of the exhaust gas refining system. Thus, development of metal-free and phosphorus-free agents with a long-term stability under real working condition is highly desirable. In the present work, the friction coefficients on the metal surface in lubricants containing different friction modifiers were investigated by the reciprocating friction test in detail. A statistical method based on the quantitative structure-property relationship (QSPR) analysis has been employed to correlate the chemical nature of additives with their effect on the friction reduction behaviors. An empirical equation relating the molecular structure and its friction reduction efficiency has been proposed as a standard for a good friction modifier. Furthermore, a surface-sensitive vibration spectroscopy, sum frequency generation (SFG) spectroscopy, has been used to analyze the molecular structures of the lubricants adsorbed on the metal surface. The SFG observation suggested that a certain relationship between the adsorption structure and friction reduction effect of these agents.

• Japanese Society of Tribologists = 日本トライボロジー学会の論文

著者

• Ye Shen

  Catalysis Res. Center Hokkaido Univ.

• Hisaeda Yoshio

  Department Of Applied Chemistry Graduate School Of Engineering Kyushu University

• Kamano Hideki

  Lubricants Research Laboratory, Idemitsu Kosan Co. Ltd.

• Koshima Hiroaki

  Advanced Technology Research Laboratories, Idemitsu Kosan Co. Ltd.

• Liu Huijin

  Catalysis Research Center, Hokkaido University

関連論文

• Isolable Iron(II)-Porphycene Derivative Stabilized by Introduction of Trifluoromethyl Groups on the Ligand Framework
• Immobilization of a Binuclear Ruthenium(III) Complex on a Gold (111) Surface : Observations of Proton-coupled Electron Transfer and Electrochemical Durability in Aqueous Media
• Synthesis and Redox Behavior of Dicobalt Complexes Having Flexible and Rigid Linkers
• Hydrophobic Vitamin B_. Part 20:^# Supernucleophilicity of Co(I) Heptamethyl Cobyrinate toward Various Organic Halides
• Chemical Properties of Sperm Whale Myoglobins Reconstituted with Monopropionate Hemins
• Enhancement of Peroxygenase Activity of Horse Heart Myoglobin by Modification of Heme-propionate Side Chains
• Synthesis, Characterization, and Redox Behavior of New Dicobalt Complexes Having Monoanionic Imine/Oxime-Type Ligands
• Formation and Cleavage of a Dicobalt Complex Bridged with a Pentamethylene Group
• Interfacial Recognition between Reconstituted Myoglobin Having Charged Binding Domain and Electron Acceptor via Electrostatic Interaction
• Molecular Recognition by Novel Macrotetracyclic Cyclophanes Having Dipeptide Segments
• Preparation and Characterization of Novel Cage-type Cyclophanes Having Three or Four Bridging Dipeptide Segments
• Photophysical and Photocatalytic Properties of β-Sulfonatoporphycenes
• Synthesis and Characterization of μ-Oxodiiron(III) Complexes of Porphycenes with Electron-withdrawing Substituents
• Photolysis of Hydrophobic Vitamin B_ Derivatives Covalently Bound to Lipid in Aqueous Media
• Enantioselective Alkylation of Hydrophobic Vitamin B_ Bearing Binaphthyl Moiety
• Discrimination of Steroid Hormones by Novel Cage-type Azacyclophanes Bearing Chiral Binding Sites
• Enantioselective Aldolation Mediated by Functionalized Bilayer Membranes as Artificial Vitamin B_6-dependent Enzymes
• β-Replacement Reaction in an Asymmetric Site Provided by an Artificial Enzyme Composed of a Hydrophobic Vitamin B_6 and Peptide Lipids
• Enantioselective β-Replacement Reaction Mediated by an Artificial Enzyme Composed of a Hydrophobic Vitamin B_6, Chiral Bilayer-forming Lipids, and Copper(II) Ions
• Preparations and Photosensitizing Properties of 2,7,12,17-Tetra-n-propylporphycenatotin(IV) Dihalide Complexes
• Redox Gradations in Ruthenium Porphycene Complexes and the Porphyrin Analogs : Axial and Macrocyclic Ligand Effects
• Electrochemical Methyl-transfer Reaction to Alkylthiol Catalyzed by Hydrophobic Vitamin B_
• Organic Films Containing Trinuclear Ruthenium Clusters that Exhibit Redox-state-dependent Heat-shielding Characteristics
• Synthesis and Properties of Alkylperoxocobalt(III)Porphyrin and Porphycene
• Recycled Catalysis of a Hydrophobic Vitamin B_ in an Ionic Liquid
• B_-TiO_2 Hybrid Catalyst for Dehalogenation of Organic Halides
• Recent Progress in Electrochemical Surface Science with Atomic and Molecular Levels
• Preparation and Reactivity of Vitamin B_-TiO_2 Hybrid Catalyst Immobilized on a Glass Plate
• The Single- and Double-Strand Cleavage of DNA by a Cationic Dicobalt Complex by Visible Light
• Molecular Structures on Solid Substrates Probed by Sum Frequency Generation (SFG) Vibration Spectroscopy
• Electrochemical Catalytic Carbon-skeleton Rearrangement Mediated by Imine/Oxime-type B_ Model Complex
• Synthesis and Catalysis of B_-Core-Shell Hyperbranched Polymer
• Redox Behavior and Electrochemical Catalytic Function of B_-Hyperbranched Polymer
• Hydroxy-Functionalized Porphycenes : Structure, Spectroscopy, and Electrochemistry
• Analyses of the Adsorption Structures of Friction Modifiers by Means of Quantitative Structure-Property Relationship Method and Sum Frequency Generation Spectroscopy
• Functionalized bilayer membranes as artificial tryptophan synthase. Characterization of catalytic efficiency, substrate specificity, and reaction selectivity.
• Recent Progress in Electrochemical Surface Science with Atomic and Molecular Levels
• Recent Progress in Electrochemical Surface Science with Atomic and Molecular Levels
• Hydrophobic vitamin B12. III. Incorporation of hydrophobic vitamin B12 derivatives into single-compartment vesicles and their alkylation in various molecular aggregates.
• Hydrophobic vitamin B12. V Electrochemical carbon-skeleton rearrangement as catalyzed by hydrophobic vitamin B12 : Reaction mechanisms and migratory aptitude of functional groups.
• Catalytic Functions of Artificial Enzyme Composed of Simple Vitamin B12 Model and Synthetic Bilayer Membrane.
• Hydrophobic vitamin B12. II. Coordination geometry and redox behavior of heptamethyl cobyrinate in nonaqueous media.
• Hydrophobic vitamin B12. I. Preparation and axial ligation behavior of hydrophobic vitamin B12r.

もっと見る 閉じる

スポンサーリンク