Synthesis of Schiff base and its application in adsorption desulphurisation of fuel oil

ABSTRACT

Schiff base (EDBSAD) was prepared by the hydrothermal method to be as adsorbent materials. The obtained EDBSAD can be characterised by FT-IR, UV-vis, XRD, and SEM. The adsorption desulphurisation performance of the adsorbent for dibenzothiophene in model oil was investigated. The results showed that the EDBSAD had a specific adsorption desulphurisation effect. The optimal adsorptive condition was as follows: adsorbent amount 0.5 g and adsorption time 8 min. Under the optimal situation, the maximal adsorption capacity of this adsorbent for DBT was 25.45 mg/g. In addition, the adsorption isotherms and kinetics were studied, and the associated parameters were derived. Langmuir models and pseudo-second-order kinetic presented best fitting results for DBT adsorbing on the adsorbent EDBSAD.

KEYWORDS:

• Adsorption
• desulphurisation
• Schiff base
• dibenzothiophene
• kinetics

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the National Natural Science foundation of China (NO. 21106032) and the Education Department of Hebei province (NO. ZD2016064).