Catalyst for producing light olefins from catalytic cracking of hydrocarbon having 4 to 7 carbon atoms and a process for producing light olefins by using a catalyst thereof

A catalyst for producing light olefins from catalytic cracking of hydrocarbon comprising 4 to 7 carbon atoms, wherein said catalyst consisting of:

• a hierarchical zeolite having 8 to 10 silicon atoms arranged in ring and comprising 0.1 to 2 nm micropore, 2 to 50 nm mesopore, and more than 50 nm macropore, wherein the mesopore and macropore are 40% to 60% of the total pore volume, and wherein said hierarchical zeolite has a mole ratio of silica to alumina of 20 to 60;
• and an element having 2+ to 4+ oxidation state of 0.1 to 3% by weight of the catalyst, wherein said element is selected from germanium, zirconium, or boron.