amount plus or minus about 3 being most preferred the catalyst made from the binder of this invention is preferably used in a slurry e g a slurry bubble column reactor where gas hourly space velocities may range from about 4000 to 20000 a preferred slurry bubble column operation is described in u s pat no 5 348 982 incorporated herein by reference twelve titania supports were prepared by spray drying mixtures of various binders with degussa p 25 tio2 dried supports were calcined between 700 u00b0 c and 1000 u00b0 c in rotary calciners the amount and source of the alumina binder and of the silica binder the wt solids in the spray drier feed and the final calcination temperature used for each of these twelve supports are summarized in table 1 the alumina chiorhydrol sol was made by grace davison designated as cx 100 and contained about 23 5 wt al2o3 analytical inspections are also shown in table 1 including the data from 30 minute sonic attrition tests the rutile content refers to the weight percent of the rutile phase in the titania with the balance being the anatase phase determined by x ray diffraction astm d 3720.