In Situ Raman Spectroscopy of the Decomposition of Tertiary Butyl Peroxy Pivalate under High Pressure and High Temperature

$29.00 plus tax (Refund Policy)

Buy Article:


The decomposition of tertiary butyl peroxy pivalate (TBPPI), in n-hexane, under a pressure of 1900 bar and at a temperature of 100 °C, was studied in situ with the use of a transportable high-throughput fiber-optic Raman spectrometer. The Raman probe was conveniently coupled to an optical high-pressure cell containing the TBPPI. Time-resolved experiments with a 10 wt % solution of TBPPI in n-hexane were carried out, and information on the mechanism of decomposition and the (first-order) kinetics was obtained. It is shown that the main decomposition products of TBPPI are CO2 and t-butanol. From first-order kinetic fits, of the Raman profiles of intensity vs. time of reactants and products, the rate constant for the decomposition of TBPPI and the formation of CO2 is found to be 1.65·10-3s-1 (half-life time for TBPPI of approximately 420 s). t-Butanol formation occurs at a slower rate of approximately 1.22·10-3s-1 (characteristic time of 566 s).


Document Type: Research Article


Affiliations: 1: Department of Chemical Technology, Darmstadt University of Technology, Petersenstraße 20, D-64287 Darmstadt, Germany 2: DSM Research, P.O. Box 18, 6160 MD Geleen, The Netherlands

Publication date: February 1, 2001

More about this publication?
Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more