Abstract: A method for producing a diamond material by contacting a fluorinated precursor with a hydrocarbon in a reactor and forming a combination in the absence of a metal catalyst; increasing the pressure of the reactor to a first pressure; heating the combination under pressure to form a material precursor; cooling the material precursor; and forming a diamond material.

Abstract: According to some embodiments, a method of preparing a superhard material involves using mixtures of boron with carbon nitride of C3N4 stoichiometry as precursors. The C3N4 may be nanospherical. The result of chemical interaction of these components is the formation of new ternary compound B—C—N compound with a cubic structure. According to some embodiments, the composition is BCxN, where x is about 0.5. According to some embodiments, the composition is BCxN, where x is about 0.2. According to some embodiments, the compound has a unit cell parameter a=3.645±0.005 ?. According to some embodiments, the unit cell parameter a is about 3.655 ?. Synthesis is carried out under the conditions of thermodynamic stability of diamond at pressures higher that 6.0 GPa and temperatures above 1000° C. The starting components are taken according to the following ratio: boron—20-60 wt. %, C3N4—40-80 wt. %.

Abstract: A method for producing a diamond material by contacting a fluorinated precursor with a hydrocarbon in a reactor and forming a combination in the absence of a metal catalyst; increasing the pressure of the reactor to a first pressure; heating the combination under pressure to form a material precursor; cooling the material precursor; and forming a diamond material.

Abstract: According to some embodiments, a method of preparing a superhard material involves using mixtures of boron with carbon nitride of C3N4 stoichiometry as precursors. The C3N4 may be nanospherical. The result of chemical interaction of these components is the formation of new ternary compound B—C—N compound with a cubic structure. According to some embodiments, the composition is BCxN, where x is about 0.5. According to some embodiments, the composition is BCxN, where x is about 0.2. According to some embodiments, the compound has a unit cell parameter a=3.645±0.005 ?. According to some embodiments, the unit cell parameter a is about 3.655 A. Synthesis is carried out under the conditions of thermodynamic stability of diamond at pressures higher that 6.0 GPa and temperatures above 1000° C. The starting components are taken according to the following ratio: boron—20-60 wt. %, C3N4—40-80 wt. %.

Abstract: The invention relates to a method of producing ethylene oxide, consisting in that ethylene is oxidized with oxygen or air in a fluidized bed of a silver catalyst containing cadmium carbonate and/or cadmium oxide and also fused alumina having a particle size of between 2 microns and 0.5 mm, the components of the catalyst being taken in the following proportion (wt.%): silver, between 9.5 and 76; cadmium carbonate and/or cadmium oxide, between 0.5 and 4 (in terms of metallic cadmium); fused alumina, between 90 and 20. The oxidation of ethylene takes place at a partial pressure of ethylene between 0.6 and 15 atm, a partial pressure of oxygen between 0.1 and 2 atm, at an aggregate pressure of 2 to 20 atm and a temperature between 200.degree. and 300.degree. C in a reactor with a packing. The fused alumina may be used as a filler or support.