Study on the adsorption of volatile gasoline components via HKUST-1: Isobutylene as a model compound

Adsorption of volatile gasoline components at oil terminal by using metal organic frameworks (MOFs) is a prospective technology in reducing environment pollution and increasing oil resource recovery. In this study, a typical MOF of HKUST-1 was facile prepared by solvothermal method and tested in the adsorption of volatile gasoline components. Isobutylene was selected as a model compound. The effects of preparation parameters Cu 2+ /H 3 BTC molar ratios, Cu 2+ precursors, and solvent compositions on the structure of HKUST-1 and its subsequent adsorption performance were systematically studied. The synthesized samples were characterized by XRD, SEM, and N 2 physisorption. It was found that the HKUST-1 prepared by using DMF as the unique solvent obtained the highest specific surface area (1076.7 m 2 /g) and the largest pore volume (0.90 cm 3 /g). Furthermore, the maximum isobutylene adsorption capacity of 31.9 mg/g was found on the HKUST-1 which prepared under the conditions of Cu 2+ /H 3 BTC = 2, Cu (CH 3 COO) 2 as the Cu 2+ precursor, and a solvent composition of DMF:EtOH:H 2 O = 0:4:3.