It is an object of the present invention to provide {HEAD ~ a high conversion} of isobutylene contained in a mixture of isomeric butenes simultaneously with {TAIL ~ a reduced yield} of by products sec.butylphenols 
It is an object of the present invention to provide { HEAD ~ a high conversion } of isobutylene contained in a mixture of isomeric butenes simultaneously with { TAIL ~ a reduced yield } of by products sec.butylphenols
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH