Accession Number : AD0621029

Title :   INTERCALATION OF THE RARE EARTH ELEMENTS INTO GRAPHITE AND DICHALCOGENIDES.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s) : Craven,William Ernest

Report Date : AUG 1965

Pagination or Media Count : 74

Abstract : The graphite intercalation compounds of cerium, samarium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, and ytterbium were prepared by reacting powdered graphite with the solution of the metal in liquid ammonia. Electrolysis was necessary to dissolve all but ytterbium. Intercalation compounds of ytterbium and samarium with the dichalcogenides: WS2, WSe2, and MoS2, were prepared by the same process. The X-ray diffraction patterns showed that mixtures of several stages were present in the graphite compounds. Magnetic susceptibility measurements indicated that most of the rare earths intercalate in the trivalent state, the exception being divalent samarium. Apparently ytterbium exists in both divalent and trivalent states in the compound. (Author)

Descriptors :   (*GRAPHITE, COMPLEX COMPOUNDS), (*RARE EARTH COMPOUNDS, COMPLEX COMPOUNDS), (*CHALCOGENS, COMPLEX COMPOUNDS), (*COMPLEX COMPOUNDS, SYNTHESIS(CHEMISTRY)), CERIUM COMPOUNDS, SAMARIUM COMPOUNDS, GADOLINIUM COMPOUNDS, TERBIUM COMPOUNDS, DYSPROSIUM COMPOUNDS, HOLMIUM COMPOUNDS, ERBIUM COMPOUNDS, THULIUM COMPOUNDS, YTTERBIUM COMPOUNDS, TUNGSTEN COMPOUNDS, MOLYBDENUM COMPOUNDS, SULFIDES, SELENIDES, X RAY DIFFRACTION, MAGNETIC PROPERTIES, VALENCE, SUPERCONDUCTORS

Distribution Statement : APPROVED FOR PUBLIC RELEASE