The filtered material is dried at 110° C. for 15 hours or heated at {HEAD ~ 400 550° C.} for {TAIL ~ 5 10 hours} to prepare it for use as a precursor 
for
The filtered material is dried at 110 ° C. for 15 hours or heated at { HEAD ~ 400 550 ° C. } for { TAIL ~ 5 10 hours } to prepare it for use as a precursor
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH