Semiporous MoS2 obtained by the decomposition of thiomolybdate precursors

被引:34
作者
Leist, A
Stauf, S
Loken, S
Finckh, EW
Ludtke, S
Unger, KK
Assenmacher, W
Mader, W
Tremel, W
机构
[1] Univ Mainz, Inst Anorgan Chem & Analyt Chem, D-55099 Mainz, Germany
[2] Univ Bonn, Inst Anorgan Chem, D-53117 Bonn, Germany
关键词
D O I
10.1039/a705501c
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The decomposition of three different ammonium thiomolybdates (NH4)(2)MoS4 . xH(2)O,(NH4)(2)Mo2S12. xH(2)O, and (NH4)(2)Mo3S13. xH(2)O (x = 1-2) have been studied by TG-DSC under argon. While all three thiomolybdates decompose al around 673 K to yield nearly X-ray amorphous MoS2, the precursor (NH4)Mo3S13. xH(2)O does so in a manner distinct from the other two precursors displaying a sharp exothermic peak in the DSC trace. We suggest that the unusual thermal behaviour of NH?42Mo3S13. xH(2)O might arise from a topochemical relation between the molecular cluster and 2H-MoS2 as proposed previously. The porosity of the X-ray amorphous MoS2 obtained from the decomposition under vacuum of(NH4)(2)Mo3S13. xH(2)O is unusually large and the material displays interesting sorption behaviour towards small organic molecules. This X-ray amorphous semiporous modification of MoS, has been characterized in detail by powder X-ray diffraction, high resolution electron microscopy and from its extended X-ray absorption fine structure. An unusual feature of this material is the presence of bent, open-ended lamellae of MoS2, contrasting fullerene-like MoS2 which forms closed shells.
引用
收藏
页码:241 / 244
页数:4
相关论文
共 25 条
[1]   Toward pillared layered metal sulfides. Intercalation of the chalcogenide clusters Co(6)Q(8)(PR(3))(6) (Q=S, Se, and Te and R=alkyl) into MoS2 [J].
Bissessur, R ;
Heising, J ;
Hirpo, W ;
Kanatzidis, M .
CHEMISTRY OF MATERIALS, 1996, 8 (02) :318-&
[2]  
DELMON B, 1995, B SOC CHIM BELG, V104, P173
[3]   THERMAL-DECOMPOSITION OF (NH4)2[MO3S(S2)6] . NH2O [J].
DIEMANN, E ;
MULLER, A ;
AYMONINO, PJ .
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1981, 479 (08) :191-198
[4]   INCLUSION SYSTEMS OF ORGANIC-MOLECULES IN RESTACKED SINGLE-LAYER MOLYBDENUM-DISULFIDE [J].
DIVIGALPITIYA, WMR ;
FRINDT, RF ;
MORRISON, SR .
SCIENCE, 1989, 246 (4928) :369-371
[5]   HIGH-RATE, GAS-PHASE GROWTH OF MOS2 NESTED INORGANIC FULLERENES AND NANOTUBES [J].
FELDMAN, Y ;
WASSERMAN, E ;
SROLOVITZ, DJ ;
TENNE, R .
SCIENCE, 1995, 267 (5195) :222-225
[6]   NESTED POLYHEDRA OF MX(2) (M=W, MO X=S, SE) PROBED BY HIGH-RESOLUTION ELECTRON-MICROSCOPY AND SCANNING-TUNNELING-MICROSCOPY [J].
HERSHFINKEL, M ;
GHEBER, LA ;
VOLTERRA, V ;
HUTCHISON, JL ;
MARGULIS, L ;
TENNE, R .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (05) :1914-1917
[7]  
KRUSS G, 1884, LIEBIGS ANN CHEM, V225, P6
[8]  
MICHALOWICZ A, 1991, LOGICIELS CHIMIE, P102
[9]   NEW METHOD FOR THE PREPARATION OF HYDRODESULFURIZATION CATALYSTS - USE OF THE MOLYBDENUM SULFUR CLUSTER COMPOUND (NH4)2[MO3IVS13] [J].
MULLER, A ;
DIEMANN, E ;
BRANDING, A ;
BAUMANN, FW ;
BREYSSE, M ;
VRINAT, M .
APPLIED CATALYSIS, 1990, 62 (01) :L13-L17
[10]  
MULLER A, 1985, CHIMIA, V39, P312