Use of supported palladium/platinum catalysts in the preparation of tertiary butyl alcohol from tertiary butyl hydroperoxide

摘要

In a method in which a solvent soln. of a t-butyl hydroperoxide (TBHP) charge stock is brought into contact with a catalytically effective amt. of a hydroperoxide decomposition catalyst (HPDC) in a hydroperoxide decomposition zone in a liq. phase with agitation to convert the TBHP to decomposition prods., principally t-butanol, the improvement comprises: (a) using as the HPDC an alumina-supported HPDC consisting of a mixt. of Pd and Pt; and (b) recovering t-butanol from the prods. of the hydroperoxide decomposition reaction. Also claimed are (1) applying the improvement to a TBHP charge stock contg. 5-30 wt.% TBHP, which is reacted at 25-250 deg C at a pressure of 0-1,000 psig using a HPDC comprising alumina with 0.1-5 wt.% of Pd and 0.1-5 wt.% of Pt deposited on it in a ratio of Pt:Pd of 0.1-10:1; and (2) method (1) in which the TBHP charge stock is dissolved in a mixt. of isobutane and t-butanol and the pressure of 0-10,000 psig is used.