Dissertation > Excellent graduate degree dissertation topics show

Preparation and Characterization of New Cobalt Based Catalyst for F-T Synthesis

Author: MiaoPeng
Tutor: XuZhenGang；WangNaiJi
School: CCRI
Course: Chemical processes
Keywords: F-T synthesis Slurry bed reactor Cobalt-based catalyst
CLC: TQ529.2
Type: Master's thesis
Year: 2008
Downloads: 246
Quote: 0
Read: Download Dissertation

Abstract


Cobalt-based catalysts for FT synthesis the catalyst for one of the most promising because of its higher hydrogenation activity and lower water-gas shift activity. The activated alumina the ZrO 2 modified activated alumina carrier, cobalt nitrate, cobalt source preparation methods on the physical and chemical properties of the catalyst, and to study the catalyst in the slurry bed FT synthesis reaction Performance. The catalyst prepared by impregnation method, were characterized by XRD, SEM, TEM, TPR and other physical and chemical properties of the catalyst. This thesis work mainly includes the following aspects: (1) using the immersion method were used to the slow drying fast drying prepared by different cobalt content of Co / Al 2 O 3 < / sub> catalyst. Characterization: The results show that the nature of the different drying methods obtained in the FT synthesis catalyst with a relatively large difference. Cobalt species on the catalyst Co 3 O 4 in the form of stored memory. Slow drying of the catalyst prepared in the formation of oxide crystals larger particles, and the smaller average pore diameter. The catalyst prepared by the two methods are difficult to restore the species the Co. 2 AlO 4 , and the impact of the utilization of the metal cobalt. Derived from the the TPR curve and XRD spectra comparison results can be difficult to restore Co 2 the AlO 4 and AlO (OH) are more slow drying prepared catalyst contains. (2) preparing a ZrO 2 -modified alumina carrier, and the carrier structure, properties and carries a cobalt-based catalyst research. The results showed that, of ZrO 2 -modified alumina carrier in the Texture compared to the alumina has a certain difference. The use of ZrO 2 -modified alumina carrier, to a source for cobalt nitrate for drilling, using the dipping method, preparation of a slow drying process of the FT synthesis catalyst. The characterization results proved that the cobalt species in the catalyst is still based on Co 3 O 4 form of catalyst shape and grain size, there was no significant change. TPR curves can be apparent, to Cart of ZrO 2 the promoted catalysts difficult to restore Co 2 an AlO 4 , and AlO (OH) content greatly reduced. (3) in the slurry bed reactor build their own hexadecane as the solvent of the slurry phase FT synthesis catalyst performance evaluation. Selected one of the FT synthesis catalyst in a slurry bed reactor, the reaction temperature, pressure, space velocity of the raw material gas on the conversion rate of the raw material gas. Determine the best reaction process parameters: P = 2.0MPa, T = 500K, H 2 / CO = 2.0, airspeed = 500h -1 . In the reaction under the reaction conditions on the catalyst plus additives and adding additives Characterization.

Related Dissertations

  1. Studies on the Synthesis and Technology of Dipentaerythritol and Its Derivative,TQ223.164
  2. Synthesis and Characterization on Semi-Aromatic Polyamides Containing Benzoxazole Units,O633.5
  3. Hydrothermal Synthesis of Oxide Hollow Spheres,TB383.4
  4. Video Coding Research Based on Texture Characteristics,TP391.41
  5. Poetic alienation : graphics,J506
  6. Urothermal Synthesis, Structure and Characterization of Functional Coordination Polymers,O631.3
  7. The Total Synthesis of a Flavonoid Glycoside Apigenin-7-O-β-D-glucuronide,R284.1
  8. Atovaquone analogues Design, Synthesis and antitumor activity of,R914
  9. Synthesis and Seperation of 1,1’-binaphthol,O625.3
  10. Flexible,rigid,Synthesis and characterization of mixed ligand complexes,O621.1
  11. Synthesis and Performance Study of Bisphenol AP-based Polybenzoxazines,TQ320.1
  12. Study on the Synthetic Process of Vat Pink R,TQ616.2
  13. Study on the Mechanism of Night Temperature to Grain Filling of Inferior in Rice,S511
  14. Gold-catalyzed Addition Reaction of Sulfonates and Alkynes and Study of Synthesis and Bioactivity of (E)-3-phenyl-substituted Acrylic Acids,R914
  15. Synthesis and Identification of P22/P221 Polypeptides of IBDV Ligand Epitope and Screening CEF Library,S852.65
  16. The Properties and Synthesis of Photochromic Indole-Substituted Fulgides,O626
  17. Curing Mechanism and Properties of Fluorenyl Epoxy Resin,TQ323.5
  18. Study on Antioxidant Activities and Lipase-catalyzed Transesterification of Lard to Produce L-ascorbyl Fatty Acid Esters,TS202.3
  19. Syntheses of Novelbenzopyran Compounds Containing Fluorine and Induced Resistance to TMV,S435.72
  20. Research on the Physiology Mechanism of Grain Filling of inferior Grain during Day and Night Chemical Regulations,S511
  21. Expression of β-Catenin in Pig’s Ovary and the Effect of β-Catenin on Porcine Granulosa Cells Apotosis and Steroidogenesis Related Enzyme,S828

CLC: > Industrial Technology > Chemical Industry > Coke chemical industry > Coal liquefaction > Indirect liquefaction
© 2012 www.DissertationTopic.Net  Mobile