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Title: Reduced ternary molybdenum and tungsten sulfides and hydroprocessing catalysis therewith

Abstract

New amorphous molybdenum/tungsten sulfides with the general formula M.sup.n+.sub.2x/n (L.sub.6 S.sub.8)S.sub.x, where L is molybdenum or tungsten and M is a ternary metal, has been developed. Characterization of these amorphous materials by chemical and spectroscopic methods (IR, Raman, PES) shows that the (M.sub.6 S.sub.8).sup.0 cluster units are present. Vacuum thermolysis of the amorphous Na.sub.2x (Mo.sub.6 S.sub.8)S.sub.x .multidot.yMeOH first produces poorly crystalline NaMo.sub.6 S.sub.8 by disproportionation at 800.degree. C. and well-crystallized NaMo.sub.6 S.sub.8 at .gtoreq. 900.degree. C. Ion-exchange of the sodium material in methanol with soluble M.sup.2+ and M.sup.3+ salts (M=Sn, Co, Ni, Pb, La, Ho) produces the M.sup.n+.sub.2x/n (Mo.sub.6 S.sub.8)S.sub.x .multidot.yMeOH compounds. Additionally, the new reduced ternary molybdenum sulfides with the general formula M.sup.n+.sub.2x/n Mo.sub.6 S.sub.8+x (MeOH).sub.y ›MMOS! (M=Sn, Co, Ni) is an effective hydrodesulfurization (HDS) catalyst both as-prepared and after a variety of pretreatment conditions. Under specified pretreatment conditions with flowing hydrogen gas, the SnMoS type catalyst can be stabilized, and while still amorphous, can be considered as "Chevrel phase-like" in that both contain Mo.sub.6 S.sub.8 cluster units. Furthermore, the small cation NiMoS and CoMoS type pretreated catalyst showed to be very active HDS catalysts with rates that exceeded the model unpromoted and cobalt-promoted MoS.sub.2 catalysts.

Inventors:
 [1];  [1];  [1];  [2]
  1. Ames, IA
  2. College Station, TX
Issue Date:
Research Org.:
Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
OSTI Identifier:
872156
Patent Number(s):
5872073
Application Number:
08/694,907
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
reduced; ternary; molybdenum; tungsten; sulfides; hydroprocessing; catalysis; therewith; amorphous; formula; 2x; metal; developed; characterization; materials; chemical; spectroscopic; methods; raman; pes; cluster; units; vacuum; thermolysis; na; multidot; ymeoh; produces; poorly; crystalline; namo; disproportionation; 800; degree; well-crystallized; gtoreq; 900; ion-exchange; sodium; material; methanol; soluble; salts; pb; compounds; additionally; meoh; mmos; effective; hydrodesulfurization; hds; catalyst; as-prepared; variety; pretreatment; conditions; specified; flowing; hydrogen; gas; snmos; type; stabilized; considered; chevrel; phase-like; contain; furthermore; cation; nimos; comos; pretreated; active; catalysts; rates; exceeded; model; unpromoted; cobalt-promoted; amorphous materials; hydrogen gas; reduced ternary; molybdenum sulfide; ternary metal; ternary molybdenum; molybdenum sulfides; chevrel phase; tungsten sulfides; treated catalyst; spectroscopic method; amorphous material; /502/208/423/

Citation Formats

Hilsenbeck, Shane J, McCarley, Robert E, Schrader, Glenn L, and Xie, Xiaobing. Reduced ternary molybdenum and tungsten sulfides and hydroprocessing catalysis therewith. United States: N. p., 1999. Web.
Hilsenbeck, Shane J, McCarley, Robert E, Schrader, Glenn L, & Xie, Xiaobing. Reduced ternary molybdenum and tungsten sulfides and hydroprocessing catalysis therewith. United States.
Hilsenbeck, Shane J, McCarley, Robert E, Schrader, Glenn L, and Xie, Xiaobing. Fri . "Reduced ternary molybdenum and tungsten sulfides and hydroprocessing catalysis therewith". United States. https://www.osti.gov/servlets/purl/872156.
@article{osti_872156,
title = {Reduced ternary molybdenum and tungsten sulfides and hydroprocessing catalysis therewith},
author = {Hilsenbeck, Shane J and McCarley, Robert E and Schrader, Glenn L and Xie, Xiaobing},
abstractNote = {New amorphous molybdenum/tungsten sulfides with the general formula M.sup.n+.sub.2x/n (L.sub.6 S.sub.8)S.sub.x, where L is molybdenum or tungsten and M is a ternary metal, has been developed. Characterization of these amorphous materials by chemical and spectroscopic methods (IR, Raman, PES) shows that the (M.sub.6 S.sub.8).sup.0 cluster units are present. Vacuum thermolysis of the amorphous Na.sub.2x (Mo.sub.6 S.sub.8)S.sub.x .multidot.yMeOH first produces poorly crystalline NaMo.sub.6 S.sub.8 by disproportionation at 800.degree. C. and well-crystallized NaMo.sub.6 S.sub.8 at .gtoreq. 900.degree. C. Ion-exchange of the sodium material in methanol with soluble M.sup.2+ and M.sup.3+ salts (M=Sn, Co, Ni, Pb, La, Ho) produces the M.sup.n+.sub.2x/n (Mo.sub.6 S.sub.8)S.sub.x .multidot.yMeOH compounds. Additionally, the new reduced ternary molybdenum sulfides with the general formula M.sup.n+.sub.2x/n Mo.sub.6 S.sub.8+x (MeOH).sub.y ›MMOS! (M=Sn, Co, Ni) is an effective hydrodesulfurization (HDS) catalyst both as-prepared and after a variety of pretreatment conditions. Under specified pretreatment conditions with flowing hydrogen gas, the SnMoS type catalyst can be stabilized, and while still amorphous, can be considered as "Chevrel phase-like" in that both contain Mo.sub.6 S.sub.8 cluster units. Furthermore, the small cation NiMoS and CoMoS type pretreated catalyst showed to be very active HDS catalysts with rates that exceeded the model unpromoted and cobalt-promoted MoS.sub.2 catalysts.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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Works referenced in this record:

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