Dissertation > Excellent graduate degree dissertation topics show

Preparation and Performance of TS-1 Zeolite Catalytic Film

Author: XueJunBin
Tutor: ZhangXiongFu
School: Dalian University of Technology
Course: Chemical processes
Keywords: TS-1 Zeolite membrane Membrane reactor Oxidation Micro-reactor
CLC: O643.32
Type: Master's thesis
Year: 2007
Downloads: 150
Quote: 3
Read: Download Dissertation

Abstract

Inorganic film and a catalytic reaction is combined to constitute the membrane reactor technology, with the advantages of the catalytic reaction and product separation integrated together, is considered as one of the three major development in the future direction of catalytic disciplines will traditional chemical industry, petroleum industry , bio-chemical the transformative changes occurred, caused widespread concern of worldwide research and process development. The inorganic film high temperature titanium silicalite (TS-1) has not only the advantages of corrosion resistance, more importantly, the catalytic performance and environmentally friendly, in line with the requirements of the development of the green chemical, zeolite catalytic milestone in the 1980s,. This thesis successfully prepared by hydrothermal synthesis of TS-1 zeolite membrane and assembly of membrane reactor to study the catalytic performance of TS-1 zeolite membrane. Guide the preparation of TS-1 membrane the secondary synthesis method using precoated seed crystal, and the first of the Silicalite-1 Zeolite of submicron particles as seed crystals, synthetic liquid supernatant state conditions, respectively, in the α-Al ₂ O _{3 ceramic pipe carrier and stainless steel sheet of porous multi-channel microreactor synthesis of TS-1 zeolite catalytic membrane. Of synthesis conditions on the formation of membrane, by means of SEM, FT-IR, XRD analysis to characterize the morphology and characteristics of the TS-1 film, with phenol oxidation synthesis of hydroquinone as a probe reaction to evaluate in a tube catalytic oxidation performance of TS-1 zeolite membrane reactors, butanone ammonia oxidation synthesis of butanone oxime reaction to evaluate the catalytic oxidation performance of TS-1 zeolite membrane in a stainless steel microchannel reactor. The results show that: 1, using Silicalite-1 Zeolite of submicron particles instead of the TS-1 zeolite particles as a seed crystal-oriented, in stainless steel micro reactor, and the surface of a tubular ceramic carrier may be formed in a layer of uniform, continuous TS-1 zeolite membrane, titanium into the zeolite frameworks did not find the presence of non-framework titanium. The synthesis conditions, in addition to the content of the alcohol of time and the templating agent TPAOH have a greater impact on the film surface of the molecular sieve particle size and thickness of the film. The higher the content of the templating agent, the smaller the molecular sieve particles. In addition to alcohol favor Ti ^{4 ions into the zeolite framework. 2, TS-1 zeolite membrane prepared on a ceramic carrier tubular membrane reactor for phenol hydroxylation synthetic hydroquinone reaction catalytic oxidation activity. In phenol / H ₂ O ₂ molar ratio is 3, after 4 hours under the conditions of reaction temperature 80 ° C, water as solvent, the reaction rate of the conversion of phenol reached 8% . Silicalite-1 seed crystals to guide the growth of the TS-1 zeolite catalyst film and the use of TS-1 film guide the growth of the seed crystal has a similar catalytic activity. A detailed examination of the impact of various conditions on the catalytic activity of the membrane reactor. 3, prepared in the stainless steel microchannel reactor TS-1 zeolite membrane micro-reactor of ammoxidation reaction, butanone having better properties of catalytic oxidation. A greater influence of the solvent and the residence time on the conversion rate of butanone.}}

Related Dissertations

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