Dissertation > Excellent graduate degree dissertation topics show

Study on the Properties of Catalytic Carcking Supported on Compound Catalysts with Heavy Aromatics

Author: CaoTianYi
Tutor: ZhuXueDong
School: East China University of Science and Technology
Course: Chemical processes
Keywords: Heavy aromatics MCM-56 β-zeolite Catalytic crackin
CLC: TQ203.2
Type: Master's thesis
Year: 2012
Downloads: 28
Quote: 0
Read: Download Dissertation

Abstract


This paper describes heavy aromatics catalytic cracking to benzene, toluene, xylene(BTX). A kind of compound catalysts were prepared by mixing Hmcm-56 andβ-zeolite. A series of different content MoO3 as active component and La2O3 as catalytic additives were added to compound catalysts that have different composite ratio. Under the conditions of T=460℃. P=3.0Mpa, WHSV=3.62h-1, V(H2):V(C9+)=1600, characterization and catalytic properties were studied.The best composite ratio of Hmcm-56:β-zeolite is 7:3, the conversion of C9+ heavy aromatic was 38.00%, the yield of BTX was 30.08%, and the selectivity to BTX was 81.05%. When the loading of MoO3 is less than 2%, MoO3 can be distributed in the surface of zeolite. When the loading continues to increase, the excess MoO3 will plug the pores, and affect the reation. The best loading of MoO3 is 1.5%. The conversion of C9+ heavy aromatic was 70.29%, the yield of BTX was 64.37%, and the selectivity to BTX was 91.58%. In order to enable the catalytic additives and stability, La2O3 were added. The best loading of La2O3 is 0.6%. The conversion of C9+ heavy aromatic was 70.89%, the yield of BTX was 67.2%.

Related Dissertations

  1. Synthesis Beta Zeolite with Vapour-phase Method Using TEABr as the Organic Template,O643.36
  2. Study on the Catalytic Performance of Zeolite Beta for Shape-selective Alkylation of Naphthalene,O643.36
  3. Catalysts Research for Alkylation of Benzene with Methanol,TQ203.2
  4. Synthesis of MCM-56 Zeolites and Their Applications on Hydrodealkylation of Heavy Aromatics,TQ424.25
  5. Domestic and Industrial Applications of β Zeolite Catalyst for Cumene Synthesis,F426.72
  6. Synthesis Anthraquinone Over Hβ Zeolites Modified by Different Metal Ions under Microwave Radiation,TQ241.55
  7. Ethanol as Alkylating Agent of Technology,TQ241.2
  8. Study on Synthesis, Characterization and Catalytic Behavior of Novel Hetero-atom β Zeolite,O643.36
  9. Modified zeolite for the semi-regenerative reforming catalyst,TQ426
  10. Solid acid-catalyzed catechol - tert- butanol alkylation reaction,O643.3
  11. Preparation and Catalytic Property or Isobutane-butene Alkylation of Zeolite Beta Molecular Sieve Loaded with Rare Earth Metal,TE621
  12. Effect of Extrusion Condition on the Global Performances of β Zeolite,TQ426
  13. Study on the Synthesis of 2,6-Diisopropylnaphthalene by Shape Selectivity,TQ241
  14. Synthesis, Characterization and Catalytic Behavior of Novel Hetero-atom-β and All-Si-β Molecular Sieves,O643.36
  15. Study on the Alkylation of O-xylene with Tert-butyl Alcohol Over Beta Zeolite,O643.3
  16. Modified β zeolite catalyst cyclohexanone oxime Beckmann rearrangement reaction of,O643.3
  17. The Development and Utilization Research of Aromatic Hydrocarbons from Catalic Reforming Unit,F426.72
  18. Integrated extraction of extractive distillation and continuous crystallization durene,TQ241
  19. Studies on NO_x Removal by NO Catalytic Oxidation and Alkali Solution Absorption at Ambient Temperature,X701
  20. Deactivation Reasons and Regeneration Routes of Catalyst for Cumene Synthesis,TQ241

CLC: > Industrial Technology > Chemical Industry > Basic Organic Chemistry Industry > General issues > Chemical reaction process > Catalytic process
© 2012 www.DissertationTopic.Net  Mobile