METHOD FOR PRODUCING OLEFIN

摘要

The purpose of the invention is to provide a method for producing an olefin that makes it possible to produce an olefin efficiently by a dehydration reaction of an alcohol without secondary reactions such as aldol condensation of a ketone even in the joint presence of a ketone and to provide a method for producing an olefin that makes it possible to produce the corresponding olefin at high activity and high selectivity by directly reacting a ketone and hydrogen in a single reaction step. This method produces an olefin from an alcohol using as a dehydration catalyst a silica gel (A) containing 10 1000 ppm of an aluminum compound as elemental aluminum and a total of 0 350 ppm of an alkali metal and alkaline earth metal obtained by bringing a silica gel (X) prepared from an alkyl orthosilicate into contact with a water soluble aluminum compound and then firing the gel or obtained from a wet process silica gel (Y) prepared from an alkali silicate salt; and produces an olefin from a ketone and hydrogen in a single reaction step in the presence of the silica gel (A) and a silver containing inorganic substance (B).