Editing Base (chemistry) (section)

==Bases as catalysts==
Basic substances can be used as [[insoluble]] heterogeneous [[catalyst]]s for [[chemical reaction]]s. Some examples are metal oxides such as [[magnesium oxide]], [[calcium oxide]], and [[barium oxide]] as well as [[potassium fluoride on alumina]] and some [[zeolite]]s. Many [[transition metal]]s make good catalysts, many of which form basic substances. Basic catalysts are used for [[hydrogenation]], the migration of [[double bond]]s, in the [[Meerwein-Ponndorf-Verley reduction]], the [[Michael reaction]], and many others. Both CaO and BaO can be highly active catalysts if they are heated to high temperatures.<ref name="books.google.com">{{cite book |last1=Tanabe |first1=K. |last2=Misono |first2=M. |last3=Ono |first3=Y. |last4=Hattori |first4=H. |title=New Solid Acids and Bases: their catalytic properties |publisher=Elsevier |year=1990 |page=14 |isbn=9780080887555 |url=https://books.google.com/books?id=Aq9cdug9hM0C&pg=PA14 |access-date=19 February 2015 |archive-date=8 October 2022 |archive-url=https://web.archive.org/web/20221008015036/https://books.google.com/books?id=Aq9cdug9hM0C&pg=PA14 |url-status=live }}</ref>