Molecular Behaviors on Asphaltenes during Atmospheric Residue Hydrodesulfurization

Cho I. Park, Kyeongseok Oh, Xiaoliang Ma, Eunji Cho, Young Durk Park, Ikpyo Hong, Jung Chul An, Yu Jin Kang, Hyung Kun Jo, Min Hyeok Jang, Seong Ho Yoon, Yukown Jeon, Joo Il Park

Research output: Contribution to journalArticlepeer-review

Abstract

A two-stage hydrotreatment of the two atmospheric residues (LF-AR and KEC-AR) over the MoO3/γ-alumina catalyst at the first stage and the NiMo/γ-alumina catalyst at the second stage was performed. Evolution of various heteroatom classes in the asphaltenes during the hydrotreating process was examined, focusing on removing sulfur and nitrogen species from asphaltenes. Various heteroatom classes (CcHh,CcHh-Ss, CcHh-Nn,CcHh-Oo,CcHh-NnSs, CcHh-OoSs, CcHh-NnOo, andCcHh-NnOoSs) in the asphaltenes were analyzed by using Fourier transfer ion cyclotron mass spectrometry (FT-ICR MS) linked with atmospheric pressure photoionization (APPI). According to the changes of their relative abundance, double bond equivalent (DBE), and the carbon number in the hydrotreating process, behaviors of the various heteroatom classes in the asphaltenes during the hydrotreating process were interpreted. Two distinctive differences in heteroatom reduction were observed for two different AR samples, and qualitative evaluation was attempted for providing possible scenarios.

Original languageEnglish
Pages (from-to)13644-13653
Number of pages10
JournalEnergy and Fuels
Volume35
Issue number17
DOIs
Publication statusPublished - Sep 2 2021

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

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