Catalyst for hydrocarbon steam cracking, method of preparing the same and method of preparing olefin by using the same

Abstract

The present invention relates to a catalyst for hydrocarbon steam cracking, a method of preparing the same, and a method of preparing olefin by the hydrocarbon steam cracking by using the catalyst, and more specifically, to a catalyst for hydrocarbon steam cracking for preparing light olefin including an oxide catalyst (0.5≦j≦120, 1≦k≦50, A is transition metal, and x is a number corresponding to the atomic values of Cr, Zr, and A and values of j and k) represented by CrZrAO, wherein the composite catalyst is a type that has an outer radius rof 0.5R to 0.96R (where R is a radius of a cracking reaction tube), a thickness (t; r−r) of 2 to 6 mm, and a length h of 0.5rto 10r, a method of preparing the same, and a method of preparing light olefins such as ethylene, propylene, etc., by performing the hydrocarbon steam cracking reaction in the presence of the composite catalyst. The present invention can provide catalysts for hydrocarbon steam cracking having high physical strength, excellent stability at high temperature, low non-activation due to coke, and improved yield and selectivity of light olefins.