Details

Autor(en) / Beteiligte

• Willms, Thomas
• Kryk, Holger
• Hampel, Uwe

Titel

Partial Isobutane Oxidation to tert‐Butyl Hydroperoxide in a Micro Reactor – Comparison of DTBP and Aqueous TBHP as Initiator

Ist Teil von

• Chemie ingenieur technik, 2018-05, Vol.90 (5), p.731-735

Erscheinungsjahr

2018

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• The oxidation of isobutane has been investigated for the first time in a micro reactor for a wide range of process conditions comparing the product ratios obtained with di‐tert‐butyl peroxide (DTBP) and tert‐butyl hydroperoxide (TBHP) as initiator. DTBP led to nearly the double conversion compared to the same concentration of TBHP, but the selectivity of TBHP using TBHP as initiator was higher. Using aqueous TBHP, the conversions reached up to 6 % in case of supercritical conditions but stayed below 2 % in case of two‐phase flow experiments. With TBHP in decane as initiator a high conversion was reached but nearly no TBHP was formed. It seems that the silicon layer of the micro reactor was not stable under such experimental conditions. In the present work, for the first time a conversion level near to that of the industrial batch process has been reached in a micro reactor for the isobutane oxidation. First experiments for the oxidation of isobutane at high oxygen concentrations using aqueous TBHP as initiator in a micro reactor are presented. Comparing tert‐butyl hydroperoxide and tert‐butyl peroxide as initiators, in this work the highest conversion of isobutane obtained ever for the isobutane oxidation in a micro reactor is reported.