{TAIL ~ The resulting gel} is dried to remove moisture and sintered at 800° C. to 1000° C. in {HEAD ~ a kiln} for 8 16 hours 
{ TAIL ~ The resulting gel } is dried to remove moisture and sintered at 800 ° C. to 1000 ° C. in { HEAD ~ a kiln } for 8 16 hours
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH