METHOD FOR OLEFINES PREPARATION

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FIELD : chemistry. SUBSTANCE : method of olefins preparation by metathesis reaction includes the interreaction of homological or heterological olefines with formation of olefins having other structure whereat the reaction is carried out in compresence of gaseous hydrogen and catalyst containing at least one element - metal selected from tungsten and molybdenum and having the structure of catalyst applied to carrier - silicon dioxide and in presence (in addition to catalyst) of the compound containing at least one element -metal selected from metals of the group Ia (alkali metals), group IIa (alkali-earth metals), group IIb and group IIIa as cocatalyst with cocatalyst/catalyst mass ratio being in the range from 0.1 to 20 wt. The amount of gaseous hydrogen taken in compresence with starting materials loaded to reactor is 0.1-80% by volume of total gas amount (taking into account the gaseous state of starting materials). EFFECT : method of olefines preparation possesses the significant safety, operation and economic advantages. 10 cl, 16 tbl, 14 ex