Dissertation > Excellent graduate degree dissertation topics show

Experimental Study on Influence of MMT on Three-way Catalyst

Author: ChenJunFeng
Tutor: ShuaiShiJin
School: Tsinghua University
Course: Power Engineering and Engineering Thermophysics
Keywords: MMT Three-way Catalyst Catalyst Plugging
CLC: O643.36
Type: Master's thesis
Year: 2011
Downloads: 34
Quote: 0
Read: Download Dissertation

Abstract


The octane enhancing fuel additive Methylcyclopentadienyl ManganeseTricarbonyl (MMT) is widely used in China to meet market demand for octane in theunleaded gasoline pool, as the use of gasoline of the appropriate octane level iscritical to obtaining optimal vehicle fuel economy. The impact of combustionproducts resulting from the use of MMT-containing gasoline on vehicle emissionscontrol components, including high cell density three-way catalysts, has long beendebated. In order to better understand this issue, a fundamental research program wasundertaken to investigate the interactions of combustion products fromMMT-containing gasoline with high cell density catalysts during severe catalystoperating conditions typical of those used to accelerate catalyst aging for the vehicledurability demonstration process.The paper reports tests conducted to evaluate the influence of engine runningcondition, the absence or presence of MMT (at18mg Mn/L), and the impact ofcatalyst inlet temperatures on deposition phenomena occurring at the catalyst facethat can lead to plugging. Additionally, a1000hour test based upon the type Vdurability procedure was conducted using MMT-containing gasoline (also at18mgMn/L) to evaluate the impact of the additive under longer term exposure conditionsmore representative of those encountered during typical real-world vehicle operation.Results were consistent with the conclusion that plugging was influenced primarilyby the test cycle condition, as plugging was only observed during continuous longterm exposure of catalysts to MMT-containing fuel at the most severe catalyst inlettemperatures (>820C) under steady-state operating conditions. Plugging was notobviously observed under dynamic operating conditions regardless of the MMTconcentration or temperature.

Related Dissertations

  1. Preparation and Performance Study of the Full-degradable Polythene Films,TQ320.721
  2. Preparation and Performance of Monolithic Pd-only Three-way Catalysts for Automobile Exhaust Control,O643.36
  3. Magnesium chloride / montmorillonite composite catalyst containing titanium and Polymerization of Ethylene,TB383.1
  4. Preparation and Characterization of Organic-Inorganic Hybrid Coatings,TB304
  5. Problems and Proposal of Drug Users’ in the MMT Management,R749.64
  6. Construction and Preliminary Application of an Engineered Strain Used for Cadmium Contamination Bioremediation,X172
  7. Study on Adsorption Mechanism of Arsenic on Ti-pillared Montmorillonite with the Stimulative Effect of UV Light,X50
  8. Study on Preparation and Properties of Organic Kaolin/PA6 Nano-composites,TB383.1
  9. Study on Hydrophilic Modification and Formation Mechanism of PVDF/MMT Membranes for Oil/Water Separations,TQ028.8
  10. Synthesis of Novel Molybdenum-based ROMP Catalysts and Study on Pdcpd with Molybdenum Catalyst System,O643.36
  11. Study on Cu (Ⅱ)-MMT and Effect of the Avian Broilers Feed by Cu (Ⅱ)-MMT,S831.5
  12. Research of Chemosensitivity Test by MTT Method in Vitro of Peripheral Blood Lymphocytes in Lung Cancer or Mammary Cancer,R737.9
  13. Preparation and Characterization of Nylon66/Montmorillonite Nanocomposites by in Situ Polymerization,TB383.1
  14. Preparation and Property Research of the Copper-based Three-way Catalyst Doped with Nickel,O643.36
  15. Preparation and Catalytic Performance Research of LaCoO3 Rare-earth Perovskite Catalysts,O643.36
  16. In some regions of heroin maintenance treatment of drug addicts attitudes and impact studies,R749.64
  17. The Molecular Mechanisms of MMT-Induced Apoptosis in SK-N-SH Cells and the Protection of Scutellarin in This Process,R285
  18. Study of Preparation and Performances of Basalt Fiber/Organo-Montmorillonite/Epoxy Nanocomposites,TB383.1
  19. Design of 100kV Impulse Breakdown Test System and Investigation of Breakdown Properties XLPE/MMT Nanocomposites,TB383.1
  20. Mechanical and chemical preparation of ultrafine montmorillonite composite,TB383.1
  21. Study on Preparation of Plastisized PLA/OMMT Nanocomposites with Peg by Insitu Polymerization under Microwave Irradiation,TB383.1

CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Chemical kinetics,catalysis > Catalytic > Catalyst
© 2012 www.DissertationTopic.Net  Mobile