A ceramic membrane for oxidative coupling of methane can include a perovskite oxide and catalyst material on a surface of the membrane.

The present disclosure relates to an ammoxidation catalyst for propylene, a manufacturing method of the same, and an ammoxidation method of propylene using the same. Specifically, in one embodiment of the present disclosure, there is provided a catalyst having a structure in which a metal oxide is supported on a silica support having a narrow particle size distribution, and excellent wear resistance.

The present disclosure relates to an ammoxidation catalyst for propylene, a manufacturing method of the same, and an ammoxidation method of propylene using the same. Specifically, in one embodiment of the present disclosure, there is provided a catalyst having a structure in which a metal oxide is supported on a silica support having a narrow particle size distribution, and excellent wear resistance.

According to one or more embodiments presently disclosed, a catalyst for converting hydrocarbons may include catalytic oxidized metal materials comprising oxidized iron, oxidized cobalt, and oxidized copper. At least 95 wt. % of the catalytic oxidized metal materials may be a combination of oxidized iron, oxidized cobalt, and oxidized copper. The catalyst may additionally include a mesoporous support material comprising pores having an average pore diameter of from 2 nm to 50 nm. At least 95 wt. % of the mesoporous support material may comprise alumina. At least 95 wt. % of the catalyst may be the combination of the catalytic oxidized metal materials and the mesoporous support material. Additional embodiments are included, such as methods for making the presently disclosed catalysts.

According to one or more embodiments presently disclosed, a catalyst for converting hydrocarbons may include catalytic oxidized metal materials comprising oxidized iron, oxidized cobalt, and oxidized copper. At least 95 wt. % of the catalytic oxidized metal materials may be a combination of oxidized iron, oxidized cobalt, and oxidized copper. The catalyst may additionally include a mesoporous support material comprising pores having an average pore diameter of from 2 nm to 50 nm. At least 95 wt. % of the mesoporous support material may comprise alumina. At least 95 wt. % of the catalyst may be the combination of the catalytic oxidized metal materials and the mesoporous support material. Additional embodiments are included, such as methods for making the presently disclosed catalysts.

Disclosed are a P—N heterojunction composite material supported on the surface of nickel foam, a preparation method therefor and the application thereof. The composite material is a supported catalyst which can be used to remove pollutants in water by means of photoelectrocatalysis. The method comprises firstly modifying, by means of a hydrothermal method, a layered nickel-iron bimetallic hydroxide nanosheet on the surface of clean nickel foam, and then modifying cobalt oxide nanowires on the surface of the layered nickel-iron bimetallic hydroxide nanosheet by means of a mixed solvent-thermal method, so as to obtain a P—N heterojunction catalyst composite material supported on the surface of nickel foam (Ni foam@NiFe-LDH/Co.sub.3O.sub.4). The composite material has a good response to visible light, which can greatly enhance the absorption and utilization of light, and is further beneficial to enhance the performance of the catalyst.

A honeycomb-structured catalyst for decomposing an organic substance, which includes a catalyst particle. The catalyst particle contains a perovskite-type composite oxide represented by A.sub.xB.sub.yM.sub.zO.sub.w, where the A contains at least of Ba and Sr, the B contains Zr, the M is at least one of Mn, Co, Ni, and Fe, y+z=1, 1.001≤x≤1.05, 0.05≤z≤0.2, and w is a positive value that satisfies electrical neutrality. The toluene decomposition rate is greater than 90% when toluene is decomposed using the honeycomb-structured catalyst subjected to a heat treatment at 1200° C. for 48 hours and a gas that contains 50 ppm toluene, 80% nitrogen, and 20% oxygen as a volume concentration as a target at a space velocity of 30,000/h and a catalyst temperature of 400° C.

A honeycomb-structured catalyst for decomposing an organic substance, which includes a catalyst particle. The catalyst particle contains a perovskite-type composite oxide represented by A.sub.xB.sub.yM.sub.zO.sub.w, where the A contains at least of Ba and Sr, the B contains Zr, the M is at least one of Mn, Co, Ni, and Fe, y+z=1, 1.001≤x≤1.05, 0.05≤z≤0.2, and w is a positive value that satisfies electrical neutrality. The toluene decomposition rate is greater than 90% when toluene is decomposed using the honeycomb-structured catalyst subjected to a heat treatment at 1200° C. for 48 hours and a gas that contains 50 ppm toluene, 80% nitrogen, and 20% oxygen as a volume concentration as a target at a space velocity of 30,000/h and a catalyst temperature of 400° C.

A catalyst is provided having: (a) at least one multimetallic salt; and (b) at least one organic acid, wherein the at least one multimetallic salt to the at least one organic acid weight ratio is in the range of 1:0.01-1:0.5. A process is also provided for the preparation of the catalyst and for the preparation of the multimetallic salt.

Modified red mud catalyst compositions, methods for production, and methods for use, a composition including red mud material produced from an alumina extraction process from bauxite ore; nickel oxide, the nickel oxide present at between about 5 wt. % to about 40 wt. % of the modified red mud catalyst composition; and a Periodic Table Group VIB metal oxide, the Group VIB metal oxide present at between about 1 wt. % and about 30 wt. % of the modified red mud catalyst composition.