1. 
   De-Acidify
   To neutralise the acidic components in paper and provide an alkaline buffer to counteract acidic build-up in the future
   Found op http://www.ifla.org/VII/s30/pub/mg1.htm#5
   
   
2. 
   deacidify
   deacidify, deacidification To remove the acid content from something or to reduce it from something.
   Found op http://www.wordinfo.info/words/index/info/view_unit/872/
   
   

Tip: double click on a word to show its meaning.