Preparation and Characterization of NiMo/Al2O3Catalyst for Hydrocracking Processing Aditya Widiyadi, Gema Adil Guspiani, Jeffry Riady, Rikky Andreanto, Safina Dea Chaiunnisa and Widayat Widayat E3S Web Conf., 31 (2018) 03011 Published online: 21 February 2018 DOI: 10.1051/e3sconf/20183103011