Phosphazenium chloride catalysts immobilized on SBA-15 mesoporous material and silica gel: new exceptionally active catalysts for the chlorination of organic acids.
Novel reusable phosphazenium chloride catalysts immobilized on SBA-15 mesoporous material and silica gel show exceptional activities and selectivities even in the continuous chlorination reaction of organic acids with thionyl chloride or phosgene.
Kim
Keun-Sik
KS
Korea Fine Chemical Co. Ltd., Yeosu Chonnam 555-290, Korea.
Kim
Jong-Ho
JH
Seo
Gon
G