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