Dissertation
DESIGN AND SYNTHESIS OF MULTIFUNCTIONAL ZIRCONIUM PHOSPHATE-BASED NANOMATERIALS FOR CATALYTIC APPLICATIONS
Washington State University
Doctor of Philosophy (PhD), Washington State University
01/2021
DOI:
https://doi.org/10.7273/000003160
Handle:
https://hdl.handle.net/2376/122642
Abstract
Zirconium Phosphate (ZrP) has been considered as one of the promising materials and has been widely studied in recent years. As a type of supporting material with stable physicochemical properties, ZrP-based materials have attracted a large amount of attention. Although numbers of ZrP-supported metals have been reported, some metal-ZrP composites have not been widely studied yet. Developing cost-efficient and highly active catalysts is in great demand. Noble metal-ZrP nanomaterials have immense potential in catalytic applications. In this dissertation, firstly, we illustrate a facile preparation method of metal-ZrP nanomaterials (metal=Ru, Pd, Pt, Ir, Au, Rh, Ag). Noble metal nanoparticles (NPs) were evenly deposited on the surface and edges of ZrP nanoplatelets. Furthermore, metal-ZrP catalysts have been applied to hydrogenation applications and exhibit high efficiency to produce targeted reaction products. To verify the catalytic performance, the conversion of 4-nitrophenol into 4-aminophenol has been chosen. After loading with different metal NPs on ZrP, the reaction rates have been improved to a varying extent. Ag NPs were further deposited on metal-ZrP catalysts, and Ag@Pd-ZrP exhibits the highest efficiency with a K value of 589 s-1 g-1. Next, acetophenone (AP) has been selected as a typical substrate and well-studied for hydrogenation reactions. With the selected catalysts of Ru-ZrP and Pd-ZrP, desired catalytic reaction pathways can be readily realized. Valuable products from acetophenone to ethylbenzene (99.9%), 1-cyclohexylethanol (99.9%), and ethylcyclohexane (98.8%) could be selectively obtained in high yields at room temperature. The possible reaction routes and catalytic mechanism have been proposed. It is anticipated that our work provides a foundation for the rational design and synthesis of multifunctional nanomaterials with controlled structures and properties. This has opened a door for the facile preparation of ZrP-based catalysts and their applications in the catalysis field.
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Details
- Title
- DESIGN AND SYNTHESIS OF MULTIFUNCTIONAL ZIRCONIUM PHOSPHATE-BASED NANOMATERIALS FOR CATALYTIC APPLICATIONS
- Creators
- Xiaoyu Li
- Contributors
- Qiang Zhang (Advisor)Ursula M. Mazur (Committee Member)Min Kyu Song (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Chemistry, Department of
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Publisher
- Washington State University
- Number of pages
- 155
- Identifiers
- 99900652004501842
- Language
- English
- Resource Type
- Dissertation