Liquid-Liquid Biphasic, Platinum-Catalyzed Hydrosilylation of Allyl
Chloride with Trichlorosilane using an Ionic Liquid Catalyst Phase in a
Continuous Loop Reactor
ADVANCED SYNTHESIS & CATALYSIS, 350 (16):
2599-2609 (November 2008)DOI: {10.1002/adsc.200800438}
Abstract
The platinum-catalyzed hydrosilylation of allyl chloride with
trichlorosilane was investigated in an ionic liquid-organic biphasic
reaction mode. After an ionic liquid screening and repetitive batch
mode experiments, the process was realized in a continuous mode using a
loop reactor concept with integrated continuous separation and
recycling of the ionic liquid catalyst phase. The continuous reactor
could be operated for 48 h at constant activity and selectivity without
addition of platinum indicating that platinum leaching into the product
phase was far below 1 ppm. Enhanced selectivity for the product
trichloro(3-chloropropyl)silane (compared to the state-of-the art) and
the possibility to use simple platinum tetrachloride (PtCl4) as
platinum source are further attractive features of this new ionic
liquid-based process concept.