摘要:
The present invention relates to a method for producing delaminated / exfoliated non-ionic inorganic materials, to such materials and their use as additives.
摘要:
A process for preparation of an ammonium polythiomolybdate or a hydrate thereof of the formula (NH 4 ) 2 Mo 3 S 13 •n H 2 O where n is 0, 1 or 2, which process may be carried out at lower operating pressures by controlling the concentration of reactants in the reaction mixture.
摘要:
The present invention relates to a method for producing delaminated / exfoliated non-ionic inorganic materials, to such materials and their use as additives.
摘要:
The process chemistry during the oxidation of molybdenite concentrates in an oxygen pressure leach can be controlled by regulating the amount of ferric iron and excess sulfuric acid recycled as autoclave discharge slurry or filtrate to the autoclave feed. A computer model capable of predicting the concentration of soluble molybdenum in the autoclave discharge and based on the concentrate and recycle analyses was developed.
摘要:
A process of the synthesis of nanotubes of transition metal dichalcogenides by chemical transport with the addition of fullerences is provided to obtain nanotubes of transistion metal dichalcogenides. The nanotubes are hexagonally arranged in form of needle-like bundles. The process comprises chemical transport, in which the fullerences exist in the vapour phase. The chemical fullerences are used at conditions, in which the fullerences exist in the vapour phase. The chemical transport reaction occurs in a quartz ampoule, sealed at a pressure lower than 0.66 Pa. The temperature in the hot part of the ampoule is higher than 830° C.
摘要:
A method of manufacturing an intercalation compound, such as a graphite intercalation compound, in a fluidized bed reactor. The intercalation compound comprises a host material, like graphite, and an intercalant and is essentially free of excess intercalant.
摘要:
Novel single layer materials of the form MX 2 , where MX 2 is a layer-type dichalcogenide such as MoS 2 , TaS 2 , WS 2 , or the like, exfoliated by intercalation of an alkali metal, and immersion in water, are disclosed. MoS 2 has been exfoliated into monolayers by intercalation with lithium followed by reaction with water. X-ray diffraction analysis demonstrates that the exfoliated MoS 2 in suspension is in the form of one- molecule-thick sheets. X-ray patterns from dried and re-stacked films of exfoliated MoS 2 indicate that the layers are randomly stacked. By adsorbing monolayers or precipitating clusters of various species such as compounds of Co, Ni, Pb, Cd, AI, Ce, In and Zn, on MoS 2 while the sulfide is suspended as single layers and then recrystallizing, a new group of inclusion compounds can be formed. In the re-crystallized or re-stacked materials, the inter-layer spacing can be expanded or contracted compared to MoS 2 .
摘要:
Molybdenum disulfide particles include a 2H crystal structure and a 3R crystal structure of molybdenum disulfide, in which a presence ratio of the 3R crystal structure in a crystal phase of molybdenum disulfide is 10% or more, and a crystallite size of the 3R crystal structure calculated by extended-type Rietveld analysis based on an analysis formula L = Kλ/(βcosθ) using a profile obtained from powder X-ray diffraction (XRD) using Cu-Kα rays as an X-ray source is 1 nm or more and 150 nm or less (in the above formula, K is an instrumental constant that depends on an XRD optical system (an incident side and a detector side) and settings, L is a crystallite size [m], λ is a measured X-ray wavelength [m], β is a half width [rad], and θ is a Bragg angle of a diffraction line [rad]).
摘要:
Herein is disclosed a process for manufacturing catalytic molybdenum sulphide microparticles, and catalytic microparticle slurry obtained by the process, the process comprising providing in a hydrocarbon solvent a Mo precursor and a H2S source to provide a reaction mixture, and hydrogenating under vigorous stirring the reaction mixture at a temperature of at least 180°C such that the combination of the temperature and pressure is sufficient for evaporating water in the reaction mixture.