This investigation consisted of a study of the break-in behavior
of a tungsten oxide on silica catalyst during propylene disproportionation.
A catalyst of 10 percent WO3 on silica gel (223 square meters
per gram B.E.T. surface area) was used in a microcatalytic reactor.
During the initial contacting of freshly activated samples of this
catalyst with propylene, significant increases in disproportionation
activity were observed for periods of up to 20 hours. The object of
this study was to investigate the phenomena responsible for this
break-in.
The rate of approach to steady-state activity data were obtained
using catalyst samples which were first saturated with each of the
three gases involved in this reaction (propylene, ethylene, and
2-butene) by pulsing at .94 and 2.7 atmospheres before.starting the
propylene flow. Effects of each gas on the break-in behavior of the
catalyst were determined. A material balance around the reactor was
made for each gas by pulse reactor techniques.
next to an author's name indicates that all files or directories associated with their ETD are accessible from the Virginia Tech campus network only.
![[VT]](http://scholar.lib.vt.edu/images/ETD-db/restricted.gif)
