Sulfur effect on Mo2N/γ-Al2O3 catalyst studied by in situ FT-IR spectroscopy

Zili Wu; Yongjun Chu; Shuwu Yang; Zhaobin Wei; Can Li; Qin Xin

doi:10.1016/s0167-2991(00)80898-8

Sulfur effect on Mo₂N/γ-Al₂O₃ catalyst studied by in situ FT-IR spectroscopy

Zili Wu, Yongjun Chu, Shuwu Yang, Zhaobin Wei, Can Li, Qin Xin

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Abstract

The HDN of pyridine over a Mo₂N/γ-Al₂O₃ catalyst was investigated in the presence and absence of sulfur. It has been found that the HDN activity of reduced passivated Mo₂N/γ-Al₂O₃ catalyst is decreased considerably in the presence of thiophene. The interaction and reaction of both thiophene and H₂S on fresh Mo₂N/γ-Al₂O₃ have been characterized by in situ FT-IR spectroscopy combined with CO as the probe molecule. The IR spectra of CO adsorbed on the catalyst treated with a thiophene/H₂ mixture show that thiophene could be easily hydrodesulfurized in the presence of H₂ on fresh Mo₂N/γ-Al₂O₃ at temperatures as low as 373 K and the surface was sulfided consequently. H₂S can strongly affect the surface active sites and sulfide the surface easily even at 373 K. Similar cases with passivated Mo₂N/γ-Al₂O₃ catalyst were also investigated.

Original language	English
Pages (from-to)	2819-2824
Number of pages	6
Journal	Studies in Surface Science and Catalysis
Volume	130 C
DOIs	https://doi.org/10.1016/s0167-2991(00)80898-8
State	Published - 2000
Externally published	Yes

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@article{bb268d006e164fbdbae088329f734ac5,

title = "Sulfur effect on Mo2N/γ-Al2O3 catalyst studied by in situ FT-IR spectroscopy",

abstract = "The HDN of pyridine over a Mo2N/γ-Al2O3 catalyst was investigated in the presence and absence of sulfur. It has been found that the HDN activity of reduced passivated Mo2N/γ-Al2O3 catalyst is decreased considerably in the presence of thiophene. The interaction and reaction of both thiophene and H2S on fresh Mo2N/γ-Al2O3 have been characterized by in situ FT-IR spectroscopy combined with CO as the probe molecule. The IR spectra of CO adsorbed on the catalyst treated with a thiophene/H2 mixture show that thiophene could be easily hydrodesulfurized in the presence of H2 on fresh Mo2N/γ-Al2O3 at temperatures as low as 373 K and the surface was sulfided consequently. H2S can strongly affect the surface active sites and sulfide the surface easily even at 373 K. Similar cases with passivated Mo2N/γ-Al2O3 catalyst were also investigated.",

author = "Zili Wu and Yongjun Chu and Shuwu Yang and Zhaobin Wei and Can Li and Qin Xin",

year = "2000",

doi = "10.1016/s0167-2991(00)80898-8",

language = "English",

volume = "130 C",

pages = "2819--2824",

journal = "Studies in Surface Science and Catalysis",

issn = "0167-2991",

}

TY - JOUR

T1 - Sulfur effect on Mo2N/γ-Al2O3 catalyst studied by in situ FT-IR spectroscopy

AU - Wu, Zili

AU - Chu, Yongjun

AU - Yang, Shuwu

AU - Wei, Zhaobin

AU - Li, Can

AU - Xin, Qin

PY - 2000

Y1 - 2000

N2 - The HDN of pyridine over a Mo2N/γ-Al2O3 catalyst was investigated in the presence and absence of sulfur. It has been found that the HDN activity of reduced passivated Mo2N/γ-Al2O3 catalyst is decreased considerably in the presence of thiophene. The interaction and reaction of both thiophene and H2S on fresh Mo2N/γ-Al2O3 have been characterized by in situ FT-IR spectroscopy combined with CO as the probe molecule. The IR spectra of CO adsorbed on the catalyst treated with a thiophene/H2 mixture show that thiophene could be easily hydrodesulfurized in the presence of H2 on fresh Mo2N/γ-Al2O3 at temperatures as low as 373 K and the surface was sulfided consequently. H2S can strongly affect the surface active sites and sulfide the surface easily even at 373 K. Similar cases with passivated Mo2N/γ-Al2O3 catalyst were also investigated.

AB - The HDN of pyridine over a Mo2N/γ-Al2O3 catalyst was investigated in the presence and absence of sulfur. It has been found that the HDN activity of reduced passivated Mo2N/γ-Al2O3 catalyst is decreased considerably in the presence of thiophene. The interaction and reaction of both thiophene and H2S on fresh Mo2N/γ-Al2O3 have been characterized by in situ FT-IR spectroscopy combined with CO as the probe molecule. The IR spectra of CO adsorbed on the catalyst treated with a thiophene/H2 mixture show that thiophene could be easily hydrodesulfurized in the presence of H2 on fresh Mo2N/γ-Al2O3 at temperatures as low as 373 K and the surface was sulfided consequently. H2S can strongly affect the surface active sites and sulfide the surface easily even at 373 K. Similar cases with passivated Mo2N/γ-Al2O3 catalyst were also investigated.

UR - http://www.scopus.com/inward/record.url?scp=0034590546&partnerID=8YFLogxK

U2 - 10.1016/s0167-2991(00)80898-8

DO - 10.1016/s0167-2991(00)80898-8

M3 - Article

AN - SCOPUS:0034590546

SN - 0167-2991

VL - 130 C

SP - 2819

EP - 2824

JO - Studies in Surface Science and Catalysis

JF - Studies in Surface Science and Catalysis

ER -

Sulfur effect on Mo₂N/γ-Al₂O₃ catalyst studied by in situ FT-IR spectroscopy

Abstract

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