37 results about "Group 6 element" patented technology

An embodiment of the invention provides an electrocatalyst, including a four-element catalyst having a formula of XYZP, wherein X is Pt or Pd, Y and Z are different elements selected from Group 6, Group 8, Group 9, or Group 11 elements, and P is phosphorous, wherein Group 6 elements include Cr, Mo, or W, Group 8 elements include Fe, Ru, or Os, Group 9 elements include Co, Rh, or Ir, and Group 11 elements include Cu, Ag, or Au.

A novel olefin production process is provided which can be established as an industrial and practical process capable of producing olefins by directly reacting a ketone and hydrogen in a single reaction step. In particular, a novel olefin production process is provided in which propylene is obtained with high selectivity by directly reacting acetone and hydrogen.

The olefin production process according to the present invention includes reacting a ketone and hydrogen in the presence of at least one dehydration catalyst and a silver-containing catalyst, and the at least one dehydration catalyst is selected from metal oxide catalysts containing a Group 6 element, zeolites, aluminas and heteropoly acid salts in which part or all the protons in heteropoly acids are exchanged with metal cations.

A sintered compact contains cubic sialon, β-sialon, and at least one of a first component and a second component. The first component is at least one element selected from the group consisting of iron, cobalt, nickel, and group 4 elements, group 5 elements, and group 6 elements of the periodic table. The second component is at least one compound containing at least one element selected from the group consisting of group 4 elements, group 5 elements, and group 6 elements and at least one element selected from the group consisting of carbon, nitrogen, and boron.

The invention discloses a preparation method of 2,5-furandicarboxylic acid. The method comprises the following steps: uniformly mixing 5-hydroxymethylfurfural, an oxidation catalyst, an alkaline substance and a solvent, and carrying out catalytic conversion in the presence of an oxygen source to obtain the 2,5-furandicarboxylic acid, wherein the oxidation catalyst is an X-Y layered composite oxide, X is one of a group IA element and a group IIA element in the periodic table of elements, and Y is one of a group III element, a group IV element, a group VB element, a group VIB element, a group VIIB element, a group VIII element, a group IB element and a group IIB element in the periodic table of elements. The method has the advantages of high selectivity, few byproducts, mild reaction conditions, low energy consumption, and great reduction of the production cost by using the oxidation catalyst with a low price and avoiding the use of a noble metal catalyst, and the prepared 2,5-furandicarboxylic acid has a high purity and a high yield.

The present invention provides a positive electrode active material. The positive electrode active material is represented by the following formula (I) and has a BET specific surface area of larger than 5 m²/g and not larger than 15 m²/g:

Li_xM¹_yM³_1-yO₂  (I)

wherein M¹ is at least one transition metal element selected from Group 5 elements and Group 6 elements of the Periodic Table, M³ is at least one transition metal element other than M¹ and selected from among transition metal elements excluding Fe, x is not less than 0.9 and not more than 1.3, and y is more than 0 and less than 1.

Disclosed is a positive electrode current collector for a lithium ion secondary battery, which is characterized by comprising an aluminum foil comprising pure aluminum or an aluminum alloy and a surface layer formed on one surface or both surfaces of the aluminum foil, wherein the surface layer contains C in an amount of 10 to 95 at.% and additionally contains at least one element selected from Group 4 to Group 6 elements in an amount of 5 to 90 at.%. Also disclosed is a positive electrode for a lithium ion secondary battery, which is characterized by having a positive electrode active material layer that covers the surface layer of the positive electrode current collector for a lithium ion secondary battery. It becomes possible to prevent the elution of the current collector into an electrolytic solution to improve the adhesion between the current collector and the active material in the interface therebetween and increase the service life of a battery.

There are provided a storage device and a storage unit capable of improving retention performance of an intermediate resistance value in writing at a low current, and a storage device and a storage unit capable of reducing random telegraph noise. A storage device of one embodiment of the present technology includes a first electrode, a storage layer, and a second electrode in this order, and the storage layer includes: an ion source layer including one or more kinds of chalcogen elements selected from tellurium (Te), sulfur (S), and selenium (Se), and one or more kinds of transition metal elements selected from Group 4 elements, Group 5 elements, and Group 6 elements of the periodic table; and a resistance change layer including boron (B) and oxygen (O). A storage device of another embodiment of the present technology includes the above-described ion source layer and a resistance change layer including one or more kinds of transaction metal elements selected from Group 4 elements, Group 5 elements, and Group 6 elements of the periodic table, and oxygen (O).

A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode contains a lithium transition metal oxide, at least one element of a group 5 element and group 6 element in the periodic table, and a phosphoric acid compound. The nonaqueous electrolyte contains a lithium salt containing a P—O bond and a P—F bond.

A method for modifying a wear characteristic of a rotor component in a turbine system and a modified rotor component for a turbine system are disclosed. The method includes implanting ions of one of a Group 6 element, a Group 13 element, or a metalloid element through an exterior surface of a rotor component. The rotor component is one of a rotor wheel or a distance wheel.

A coating liquid for forming an n-type oxide semiconductor film, the coating liquid including: a Group A element, which is at least one selected from the group consisting of Sc, Y, Ln, B, Al, and Ga; a Group B element, which is at least one of In and Tl; a Group C element, which is at least one selected from the group consisting of Group 4 elements, Group 5 elements, Group 6 elements, Group 7 elements, Group 8 elements, Group 9 elements, Group 10 elements, Group 14 elements, Group 15 elements, and Group 16 elements; and a solvent.

A method of producing a regenerated hydrotreating catalyst, including a first step of preparing a hydrotreating catalyst that has been used for hydrotreatment of a petroleum fraction and has a metal element selected from Group 6 elements of the periodic table; a second step of performing regeneration treatment for part of the catalyst prepared in the first step, then performing X-ray absorption fine structure analysis for the catalyst after the regeneration treatment, and obtaining regeneration treatment conditions in which a ratio IS/IO of a peak intensity IS of a peak attributed to a bond between the metal element and a sulfur atom to a peak intensity IO of a peak attributed to a bond between the metal element and an oxygen atom is in the range of 0.1 to 0.3 in a radial distribution curve obtained from an extended X-ray absorption fine structure spectrum.