Preparation of layered zirconium phosphite sulfophenylphosphonates and their use as a catalyst

摘要

The present invention provides zirconium phosphite sulfophenylphosphonates having the following formulaPP Zr(HPO.sub.3).sub.m (HPO.sub.4).sub.n (PO.sub.3 C.sub.6 H.sub.5).sub.y (PO.sub.3 C.sub.6 H.sub.4 SO.sub.3 H).sub.zPPwherein m+ n=x; x+y+z=2; 0.4≦x≦1.7; 0≦y≦1.6; and 0.01. ltoreq.z≦0.8. The present invention also discloses a method of preparing these zirconium phosphite sulfophenylphosphonates and their use as a catalyst.