Dissertation > Excellent graduate degree dissertation topics show

Synthesis and Characterization of Perovskite Catalysts with Mesoporous Structure

Author: LiuJun
Tutor: ZhangRunZuo
School: Beijing University of Chemical Technology
Course: Chemical Engineering and Technology
Keywords: Mesoporous perovskite CH4 hard template
CLC: O643.36
Type: Master's thesis
Year: 2012
Downloads: 99
Quote: 0
Read: Download Dissertation

Abstract


Perovskite oxides have unique physicochemical characteristics andcatalytic properties. However, their applications are totally limited due totheir relatively smaller surface area and pore volume. Therefore manyresearchers tried to find an ideal preparation method for perovskite-typemixed-oxides aiming at improving the specific surface area and thecorresponding catalytic activities. In this paper, several methods includinghard template method, soft template method, and traditionalauto-combustion method were used, to prepare a series of LaFeO3andLaCoO3perovskite oxides. The influence of preparation methods on thesurface area and catalytic activity was studied.Using CO or CH4combusion as a probe reaction, the reactivities ofthe prepared catalysts was evaluated. These catalysts were thereaftercharacterized by X-ray diffraction (XRD), transmission electronmicroscopy (TEM), N2adsorption-desorption isotherm (BET), infraredspectroscopy (FT-IR), TG-DTA, H2-TPR, XPS in order to investigate thestructure, the crystal phase, the specific surface area and the oxidationstate of the catalysts.In this paper, we also discussed the influence of different preparecondition in hard template preparation on the pore size, crystallinity, porevolume and adsorption capacity of SBA-15and KIT-6.We prapared twoseries of hard template, SBA-15having the P6mm two-dimensionalhexagonal structure and KIT-6having the Ia3d three-dimensional cubic

Related Dissertations

  1. Methane Concentration Detecting Instrument Based on Infrared Absorption Theory,TP216
  2. Investigation of Fabrication, Characterization and Property of Fuctional Titanium Dioxide Nanoporous Materials,TB383.1
  3. Effects of N Addition on Soil Soluble Nitrogen and CH4 Oxidation of Upland in Subtropical,S714
  4. Study on Methane and Nitrous Oxide Emission in Double-Crop Rice Fields at Red Paddy Soil under Long-Term Different Fertilizer Systems,S511
  5. Preparation and Photocatalytic Properties of Semiconductor Oxides,O643.36
  6. New aza- carbene complexes immobilized palladium and catalytic chlorinated aromatic Suzuki coupling reaction,O643.32
  7. The Photocatalytic Degradation of Nitro-phenol by B-N-Er-TiO2 and F-N-Er-TiO2 Nanocrystal under Visible Light,O643.32
  8. Synthesis of Cerium-doped Mesoporous Materials and Its Catalytic Performances for Oxidation Reactions,O643.36
  9. Research on Novel Nitric Oxide-releasing Donors,TB34
  10. Modified Silica-Based Mesoporous Materials and Appliation in the Heavy Metal Adsorption,TB34
  11. Research on Calcium Magnesium Bioactive Materials for Bone Regeneration,R318.08
  12. Nematodes on soil CO 2 , CH 4 , N 2 O emission / absorption,X174
  13. Based on the two-dimensional graphene composites and preliminary application of,TB332
  14. Composite Supercapacitor Electrode Materials Preparation and Properties,TM53
  15. Solid base catalysts and their catalytic synthesis reaction of isophorone Performance,TQ224.2
  16. A novel organic-inorganic hybrid mesoporous materials synthesis and for PC / ABS flame retardant research,TB33
  17. New graphite and magnetic properties of mesoporous carbon composites and environmental applications,X703
  18. Synthesis and Characterization of Novel Mesoporous Materials,TB383.4
  19. Synthesis of mesoporous metal oxide nano- composite material and,TB383.1
  20. Synthesis and Application Control mesoporous materials,TB383.4
  21. Porous alumina and alumina - Preparation and characterization of zeolite composites,TB383.4

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