The resulting catalyst contains at least 60 percent of {HEAD ~ its pore volume} in the 50 to 200 Angstroms diameter range or {TAIL ~ at least 50%} of its pore volume in the 30 to 100 Angstroms diameter range 
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The resulting catalyst contains at least 60 percent of { HEAD ~ its pore volume } in the 50 to 200 Angstroms diameter range or { TAIL ~ at least 50 % } of its pore volume in the 30 to 100 Angstroms diameter range
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH