Vol. 2024 No. 2 (2024)
Articles

Effects of lanthanum and ethylenediamine tetraacetic a cid

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  • Qi Wang,
  • Tong Wu
Qi Wang
Chemical Engineering Institute, Qingdao University of Science and Technology, Qingdao, 266042, Shandong, China
Tong Wu
Chemical Engineering Institute, Qingdao University of Science and Technology, Qingdao, 266042, Shandong, China
cover image

Published 04-06-2024

Keywords

  • catalytic chemistry,
  • hydrodesulfurization,
  • lanthanum,
  • ethylenediamine tetraaceticacid

Copyright (c) 2024 Cambridge Science Advance

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

How to Cite

[1]
Q. Wang and T. Wu, “Effects of lanthanum and ethylenediamine tetraacetic a cid”, Camb. Sci. Adv., vol. 2024, no. 2, pp. 7–12, Jun. 2024, doi: 10.62852/csa/2024/9.

Abstract

Using nickel-tungsten as active metals and TiO₂-Al₂O₃ as the support, Ni-W/TiO₂-Al₂O₃ catalysts for the hydrodesulfurization of heavy oil were prepared by wetness impregnation. The effects of the modification of lanthanum, ethylenediamine tetraacetic acid (EDTA)and La in cooperation with EDTA on the structure and hydrodesulfurization performance of the catalysts were investigated. The catalysts were characterized by XRD, BET, H₂-TPR and SEM. The results indicated that La and EDTA could weaken the interaction between support and active component, facilitate the reduction of active component, and benefit the formation of Ni-W-S phase. Addition of La or EDTA could increase the surface area and suppress the agglomeration of active metals on surface, forming smaller and highly dispersed active phase particles. The La, EDTA and combined La and EDTA modified catalysts possessed higher HDS activity than Ni-W sample, Ni-W-La-E catalyst had the highest HDS activity, and its thiophene conversion reached 99.7%.

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