A method of carrying out a reaction in a solution catalytically comprising contacting a solid catalytically active material and a solution in which a catalytic reaction is to be carried out wherein the catalytic reaction yields a gas which adheres to the catalyst particles such that as the reaction is...http://www.google.ca/patents/US5078798?utm_source=gb-gplus-sharePatent US5078798 - Buoyancy mediated control of catalytic reaction