Degree Type

Dissertation

Date of Award

2017

Degree Name

Doctor of Philosophy

Department

Chemistry

Major

Chemistry

First Advisor

Wenyu Huang

Abstract

Intermetallic compounds have shown promise as efficient heterogeneous catalysts, displaying improved performance over their monometallic parent metals for chemical transformations. Furthermore, colloidal intermetallic nanoparticles (iNPs) afford additional improvements via increased catalyst surface area and enhanced catalytic performance. However, these iNPs are not efficiently protected against sintering during thermal treatment procedures such as catalyst regeneration, resulting in a loss of their active surface area. Herein, we have successfully developed porous encapsulation strategies using inert silica that afford monodisperse iNPs that address this concern. These iNPs are highly stable thermally and the inert silica-based mesoporous encapsulation doesn't present mass transfer obstacles during catalysis. Their efficiency as heterogeneous catalysts are also extensively explored.

DOI

https://doi.org/10.31274/etd-180810-5917

Copyright Owner

Raghu Maligal Ganesh

Language

en

File Format

application/pdf

File Size

121 pages

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