Nazarudin, N., Ishak, P. M., & Afrida, A. (2022). Catalytic Cracking of Plastic Waste Polypropylene for Gasoline Production Using H-USY and Cr-USY : Catalytic Cracking of Polypropylene . Jurnal Bio-Geo Material Dan Energi, 2(2). https://doi.org/10.22437/bigme.v2i2.31969