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

Abstract

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 Cu2+/H3BTC molar ratios, Cu2+ 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 N2 physisorption. It was found that the HKUST‐1 prepared by using DMF as the unique solvent obtained the highest specific surface area (1076.7 m2/g) and the largest pore volume (0.90 cm3/g). Furthermore, the maximum isobutylene adsorption capacity of 31.9 mg/g was found on the HKUST‐1 which prepared under the conditions of Cu2+/H3BTC = 2, Cu (CH3COO)2 as the Cu2+ precursor, and a solvent composition of DMF:EtOH:H2O = 0:4:3.