A kinetic study of HKUST-1 for desulfurization applications

Abstract

In this study, HKUST-1 prepared under solvothermal conditions and tested in desulphurization of model gasoline. The prepared HKUST-1 samples were characterized using surface area and pore volume analysis ( BET), powder X-ray diffraction( XRD), and Fourier transforms infrared spectroscopy (FTIR). The prepared HKUST-1 was used for desulphurization of model gasoline (thiophene with iso-octane), and the influence of the thiophene concentration, HKUST-1 dose, temperature, and contact time. The experimental results revealed that the sulfur content in model fuel was reduced from 1500 to 148.2 ppm (90.12% removal efficiency) for 4 hours contact time at 30 o C. In addition, an isotherm adsorption and kinetics study were performed for a batch process to understand the system equilibrium( i.e., the best fitting Langmuir isotherm or Freundlich isotherm). The kinetics study proved that the contained sulfur removal was best fitted by Pseudo-Second-Order Kinetics. Regeneration results show that the HKUST-1 has a reversible nature as an adsorbent. Therefore, HKUST-1 might be used as a promising adsorbent for removing thiophene compounds from gasoline.

Synthesis and Characterization of a Contemporary Type of Metal-Organic Framework and its Application for Purification Wastewater from Toxic Methylene Blue Dye

“…The effects of the reusability cycles were detailed in Figure 13, and the efficiency remained commendably high. This outcome underscores the remarkable reusability of MOF-199 as an adsorption material for wastewater treatment involving methylene blue [18].…”

“…Metal-organic framework (MOF-199) is manufactured through laboratory approach using hydro/solvothermal techniques. This harmonic formulation of MOF-199 was based on previous work developing this framework with some modifications [18,19]. The solution was prepared by liquefying 1.75 g (7.24 mmol) of copper (II) trinitrate (Cu (NO 3 ) 2 •3H 2 O) and 0.84 g (4 mmol) of trimesic acid (H 3 BTC) in 48 ml of ethanol (EtOH).…”