Subject: Will Aluminum Oxide react readily with any weak acid?

Hello,

I am using a membrane, made up of Aluminum Oxide, and a certain solute, a
weak acid, which will be in full contact with the membrane.  I already
tried it, and it seems that some of the solute either reacted with the
membrane (over a period of a few days), or it may have just been absorbed
into the membrane.  Can't see any visible damage to the membrane, but a
Chemist should be able to just tell me if Al2O3 is likely to react with a
weak acid...  The acid I am using is Poly(styrene sulfonic acid), MW 
75,000, and can be found at Alpha Aesar, item # 42653.  I would appreciate 
any response, thanks for your time,
sincerely, John  jtulpan@hotmail.com

Re: Will Aluminum Oxide react readily with any weak acid?