При синтезе носителей типа МСМ темплат (ПАВ) часто удаляют методом экстракции, а при синтезе SBA

[Farhad]

При синтезе носителей типа МСМ темплат (ПАВ) часто удаляют методом экстракции, а при синтезе SBA практически всегда методом выжигания. Чем обусловлена такая разница?

[Arkadiy]

Расшифруйте

[cty]

https://en.wikipedia.org/wiki/MCM-41

Например:

"MCM-41 is not hydrothermally stable because of the slight wall thickness and the low degree of cross-linking of the silicate units".

Хотя:

"Later, calcination leads to a condensation of the silanol groups so that the silicon atoms are bridged by oxygen atoms. The organic template is oxidized and disappears".

 

https://link.springer.com/article/10.1007/s10934-016-0311-z

An overview of ordered mesoporous material SBA-15: synthesis, functionalization and application in oxidation reactions

"At present, SBA-15 has attracted more attention among different mesoporous silica structures due to their desirable properties such as thick pore wall..."