HYDROCARBON STEAM CRACKING CATALYST FOR PREPARING LIGHT OLEFIN, METHOD FOR PREPARING THE CATALYST, AND METHOD FOR PREPARING LIGHT OLEFIN BY HYDROCARBON STEAM CRACKING USING THE CATALYST

摘要

PURPOSE: To provide a catalyst for hydrocarbon steam cracking which improves yield, reduces coke generated and is excellent in thermal stability at high temperature when preparing olefin by steam cracking hydrocarbons, a method for preparing the catalyst, and a method for preparing olefin by steam cracking hydrocarbons under the existence of the catalyst. CONSTITUTION: The catalyst for hydrocarbon steam cracking comprises KMgPO4 as a catalyst component, wherein the catalyst is a supported catalyst in which KMgPO4 is supported onto a support, wherein the support is selected from the group consisting of alpha alumina, silica, silica-alumina, zirconium oxide, magnesium oxide, magnesium aluminate, calcium aluminate, and zeolite, wherein the supported catalyst contains 0.5 to 30 wt.% of KMgPO4 for the total weight of the supported catalyst, and wherein a precursor of the KMgPO4 is selected from the group consisting of magnesium nitrate hydrate, potassium hydroxide and ammonium phosphate salts.