Zhao, Runze
(2022)
Continuous Flow Synthesis of Zeolite ZSM-5 and Fe-ZSM-5.
Master's Thesis, University of Pittsburgh.
(Unpublished)
Abstract
Continuous flow synthesis is a cutting-edge method for producing zeolites that significantly improve mass and heat transfer, energy efficiency, waste production, and scalability as compared to hydrothermal batch synthesis. However, other impediments to zeolite synthesis persist, including viscosity difficulties and the presence of solids in starting materials, products, or by-products. It was necessary to develop a generic continuous flow zeolite synthesis capable of overcoming the limitations. ZSM-5 and Fe-ZSM-5 are noteworthy zeolites due to their exceptional catalytic activity in a number of processes, including fluid catalytic cracking (FCC) and methane dehydroaromatiza (MDA). We developed a continuous synthesis flow procedure for ZSM-5 and Fe-ZSM-5 in this work by quickly increasing the temperature of the zeolite precursor and superheated water in a flow reactor to 280 °C, which favors zeolite crystallization, followed by rapid cooling to prevent undesired reactions. The successful synthesis of high-quality ZSM-5 was accomplished with the goal of establishing the iron-loading ZSM-5 synthesis. Iron loading retards the development of the MFI structure in the continuous flow synthesis process. This may be resolved by increasing the residence period of the continuous flow. By varying the Fe-ZSM-5 reagent formula, we find one possibility that synthesizes a variety of different kinds of zeolites by just modifying the recipe.
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| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
|
| ETD Committee: |
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| Date: |
10 June 2022 |
| Date Type: |
Publication |
| Defense Date: |
1 April 2022 |
| Approval Date: |
10 June 2022 |
| Submission Date: |
1 April 2022 |
| Access Restriction: |
2 year -- Restrict access to University of Pittsburgh for a period of 2 years. |
| Number of Pages: |
69 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Swanson School of Engineering > Petroleum Engineering |
| Degree: |
MS - Master of Science |
| Thesis Type: |
Master's Thesis |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
continuous flow synthesis
Zeolites |
| Date Deposited: |
10 Jun 2022 19:18 |
| Last Modified: |
10 Jun 2022 19:18 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/42400 |
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