Reduced ternary molybdenum and tungsten sulfides and hydroprocessing
catalysis therewith
    6.
    发明授权
    Reduced ternary molybdenum and tungsten sulfides and hydroprocessing catalysis therewith 失效
    减少三元钼和硫化钨,加氢处理催化

    公开(公告)号:US5872073A

    公开(公告)日:1999-02-16

    申请号:US694907

    申请日:1996-08-09

    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.

    Abstract translation: 已经开发了具有通式Mn + 2x / n(L6S8)Sx的新的无定形钼/钨硫化物,其中L是钼或钨,M是三元金属。 通过化学和光谱方法(IR,拉曼,PES)表征这些无定形材料表明存在(M6S8)0簇单元。 无定形Na 2 X(Mo 6 S 8)S xxyMeOH的真空热解首先通过在800℃下歧化产生不良结晶的NaMo 6 S 8,并在≥900℃下良好结晶的NaMo 6 S 8。在甲醇中与可溶性M2 +和M3 +盐的钠物质的离子交换 (M = Sn,Co,Ni,Pb,La,Ho)产生Mn + 2x / n(Mo6S8)SxxyMeOH化合物。 另外,具有通式Mn + 2x / nMo6S8 + x(MeOH)y [MMOS](M = Sn,Co,Ni)的新的还原的三元硫化钼是一种有效的加氢脱硫(HDS)催化剂, 各种预处理条件。 在具有流动氢气的特定预处理条件下,SnMoS型催化剂可以稳定化,而仍然是非晶态的催化剂可以被认为是含有Mo6S8簇单元的“Chevrel相状”。 此外,小型阳离子NiMoS和CoMoS型预处理催化剂显示为非常活跃的HDS催化剂,其速率超过了模型未提纯和钴促进的MoS2催化剂。

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