Heterogeneous catalytic studies with rhenium cluster-based precursors

When (Re(CO)$\sb3$OH) $\sb4$ was supported on Al$\sb2$O$\sb3$ followed by heating in H$\sb2$ no decomposition gas products, CO and CH$\sb4$, were observed below 650 K. Following the activation by infrared spectroscopy showed the formation of Re(CO)$\rm\sb3\{O$-$\rm Al\}\{HO$-Al$\}\sb2$ at 480 K. The activated sample, (Re$\sb4$) /Al$\sb2$O$\sb3$, when exposed to CO/H$\sb2$ at 298 K, produced CH$\sb4$ near 500 K with a shoulder near 600 K in the temperature programmed reaction (TPR) profile. Elevating the CO/H$\sb2$ treatment temperature to 500 K resulted in the formation of CH$\sb4$ at 560 K. The adsorption of CH$\sb3$OH or CH$\sb3$I to the sample produced CH$\sb4$ at 580 K. When (Re(CO)$\sb3$OH) $\sb4$ activated on SiO$\sb2$, only one CH$\sb4$ peak at 490 K was observed for CO/H$\sb2$ adsorption. When TiO$\sb2$ was used as a support, a spillover species was also observed from CO and H$\sb2$ exposure at 500 K. The spillover rate appeared to be slower on TiO$\sb2$ than was observed on Al$\sb2$O$\sb3$.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemistry

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Lane, Philip Douglas

Contributors dc:contributor

• Shapley, John R.

• Chemistry, Inorganic

Statement dc:rights

• Copyright 1995 Lane, Philip Douglas

Language dc:language

eng

Identifier

AAI9624405
(UMI)AAI9624405

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/21150