In this age of Prism (government spying) and the ability for law enforcement to easily track IP addresses of those posting on forums such as these, I wouldn't dare even link an example of creating explosives from liquids.

But I will say, as a chemical engineer myself, that there are certain liquids readily available in any laboratory setting (including university laboratories), that when mixed have a very low activation energy. The result is predictable. This is self evident to anyone here who has ever worked in a lab.*

There is also a certain powder we had at our lab that when mixed with a common liquid found in every laboratory, would produce enough deadly something-or-other to wipe out an entire plane load of passengers.

Sorry to be so oblique. If you wish to continue to believe that it isn't possible, rest assured that I won't try to correct you from this point on.

*edited to add: I re-read your earlier post and noticed that you said something to the effect that it couldn't be done in a non-laboratory setting. This is false. Let me just say that a small bucket of ice (easily found on an airplane), will certainly grant you the laboratory-like conditions necessary for my first example.