Air‐promoted adsorptive desulfurization of diesel fuel over  T i‐ C e mixed metal oxides | Zendy

Xiao Jing | Zendy; Sitamraju Siddarth | Zendy; Chen Yongsheng | Zendy; Watanabe Shingo | Zendy; Fujii Mamoru | Zendy; Janik Michael | Zendy; Song Chunshan | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

Air‐promoted adsorptive desulfurization of diesel fuel over T i‐ C e mixed metal oxides

Author(s) -

Xiao Jing,

Sitamraju Siddarth,

Chen Yongsheng,

Watanabe Shingo,

Fujii Mamoru,

Janik Michael,

Song Chunshan

Publication year - 2015

Publication title -

aiche journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.958

H-Index - 167

eISSN - 1547-5905

pISSN - 0001-1541

DOI - 10.1002/aic.14647

Subject(s) - dibenzothiophene , adsorption , chemistry , sulfoxide , benzothiophene , flue gas desulfurization , diesel fuel , oxidizing agent , sulfone , inorganic chemistry , phenanthrene , activated carbon , nuclear chemistry , organic chemistry , thiophene

Air‐promoted adsorptive desulfurization (ADS) of commercial diesel fuel over a Ti‐Ce mixed oxide adsorbent in a flow system is investigated in this work. The fresh/spent adsorbents were characterized using X‐ray absorption near edge structure spectroscopy. Results show that sulfoxide species are formed during air‐promoted ADS over Ti 0.9 Ce 0.1 O 2 adsorbent. Adsorption selectivity of various compounds in fuel follows the order of dibenzothiophene sulfone > dibenzothiophene ≃ benzothiophene > 4‐methyldibenzothiophene > 4,6‐dimethyldibenzothiophene > phenanthrene > methylnaphthalene > fluorene > naphthalene. The high adsorption affinity of sulfoxide/sulfone is attributed to stronger Ti‐OSR 2 than Ti‐SR 2 interactions, resulting in significantly enhanced ADS capacity. Adsorption affinity was calculated using ab initio methods. For Ti‐Ce mixed oxides, reduced surface sites lead to O‐vacancy sites for O 2 activation for oxidizing thiophenic species. Low temperature is preferred for air‐promoted ADS, and the Ti‐Ce adsorbent can be regenerated via oxidative air treatment. This study paves a new path of designing regenerable adsorbents. © 2014 American Institute of Chemical Engineers AIChE J , 61: 631–639, 2015

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research