Alexandria Digital Research Library

Distinguishing molecular environments in supported Pt catalysts and their influences on activity and selectivity

Author:
Jones, Louis Chin
Degree Grantor:
University of California, Santa Barbara. Chemical Engineering
Degree Supervisor:
Bradley F. Chmelka and Michael J. Gordon
Place of Publication:
[Santa Barbara, Calif.]
Publisher:
University of California, Santa Barbara
Creation Date:
2014
Issued Date:
2014
Topics:
Engineering, Chemical and Nanotechnology
Genres:
Dissertations, Academic and Online resources
Dissertation:
Ph.D.--University of California, Santa Barbara, 2014
Description:

This thesis entails the synthesis, automated catalytic testing, and in situ molecular characterization of supported Pt and Pt-alloy nanoparticle (NP) catalysts, with emphasis on how to assess the molecular distributions of Pt environments that are affecting overall catalytic activity and selectivity. We have taken the approach of (a) manipulating nucleation and growth of NPs using oxide supports, surfactants, and inorganic complexes to create Pt NPs with uniform size, shape, and composition, (b) automating batch and continuous flow catalytic reaction tests, and (c) characterizing the molecular environments of Pt surfaces using in situ infrared (IR) spectroscopy and solid-state 195Pt NMR. The following will highlight the synthesis and characterization of Ag-doped Pt NPs and their influence on C 2H2 hydrogenation selectivity, and the implementation of advanced solid-state 195Pt NMR techniques to distinguish how distributions of molecular Pt environments vary with nanoparticle size, support, and surface composition.

Physical Description:
1 online resource (181 pages)
Format:
Text
Collection(s):
UCSB electronic theses and dissertations
ARK:
ark:/48907/f3t151s6
ISBN:
9781321202083
Catalog System Number:
990045115930203776
Rights:
Inc.icon only.dark In Copyright
Copyright Holder:
Louis Jones
File Description
Access: Public access
Jones_ucsb_0035D_12096.pdf pdf (Portable Document Format)