Disclosed are a class of {HEAD ~ compositions}, and methods of preparing them, which compositions are comprised of inorganic oxides and {TAIL ~ organic bases} 
Disclosed are a class of { HEAD ~ compositions } , and methods of preparing them , which compositions are comprised of inorganic oxides and { TAIL ~ organic bases }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL