公开(公告)号：US4996108A

公开(公告)日：1991-02-26

申请号：US297464

申请日：1989-01-17

申请人： W. M. Ranjith Divigalpitiya ,  Robert F. Frindt ,  S. Roy Morrison

发明人： W. M. Ranjith Divigalpitiya ,  Robert F. Frindt ,  S. Roy Morrison

IPC分类号： C01B19/04 ,  C01B19/00 ,  C01G1/00 ,  C01G1/12 ,  C01G33/00 ,  C01G35/00 ,  C01G39/00 ,  C01G39/06 ,  C01G41/00 ,  C03C17/22

CPC分类号： C01B19/007 ,  C01G35/00 ,  C01G39/06 ,  C01G41/00 ,  C03C17/22 ,  C01P2002/20 ,  C01P2002/77 ,  C01P2002/78 ,  C01P2004/20 ,  C03C2217/287 ,  C03C2218/11 ,  Y10T428/31504

摘要： Compositions of the formula MX.sub.2 :Y, wherein MX.sub.2 is a layer type transition metal dichalcogenide, M is a metal selected from the group consisting of niobium, tantalum, molybdenum and tungsten, X is a chalcogen selected from the group consisting of sulfur and selenium and Y is a material located between layers of MX.sub.2. The compositions may be prepared by the steps of first forming a suspension of the MX.sub.2 in a body of water. A liquid which is immiscible with water is added to the suspension. The suspension and immiscible liquid are agitated together to form a temporary emulsion. The emulsion is allowed to rest until the water and the liquid separate with an interface therebetween. A sheet-like composition of MX.sub.2 :Y forms at the interface. Preferably, the MX.sub.2 is in exfoliated, singular molecular thickness layers suspended in the water.