Dear Md. Abu Rashed:

Si(OH)4 generates two molecules of water and  formed SiO2. On the surface can be OSi(OH)2 or H2SiO3. Silica gel is used for moisture removal. Perhaps, propanol- 2 generate  molecules water via SiO2. Acetone molecules obtained.

Best regards.

Dear Mr. Yuri Mirgorod,

Thank you for your comments. However, can you please send me any literature suggest the influence of 2-propanol on  SiO2 buried Si surface.

Best regards,

Md. Abu Rashed

My hypothesis is based on the experience and my knowledge. Sources look for yourself. Ask  Deep Chand Agrawal .  The same question he asked. SIlica gel column becomes black while packing with cyclohexane. Why? Perhaps this experiment will be enough for you ?

Regards.

Oxidation in presence of water (humidity) will not take place without the influence of water. If you have an intermediate “Si(OH)” state why you shouldn’t have native OH groups onto the surface of the amorphous SiO2 surface. Water itself is able to influence such surfaces, as demonstrated within the publication.

https://books.google.de/books?id=tFjrCAAAQBAJ&pg=PA151&lpg=PA151&dq=Oxidation+silizium+water+oxygen&source=bl&ots=BBj7L-tkTZ&sig=jgX8uRABdG2O5E2SaBgzqQBj-o8&hl=de&sa=X&ved=0ahUKEwji2oqty5jNAhXDHpoKHSZoBEAQ6AEISDAD#v=onepage&q=Oxidation%20silizium%20water%20oxygen&f=false

Article Detailed statistical contact angle analyses; “slow moving” d...

Dear Dr. Michael Schmitt

Thank you for your valuable information.

Best regard,

Rashed