Disclosed are shaped dehydrogenation catalysts, methods for making the catalysts, and methods for dehydrogenating a hydrocarbon using the catalyst. A method for making the shaped dehydrogenation catalyst can include combining a group 13 metal precursor and a group 1 metal precursor with a catalyst support precursor to form a shapeable material, shaping the shapeable material to form a wet shaped material, drying the wet shaped material to form a dry shaped material, and calcining the dry shaped material to form the shaped dehydrogenation catalyst.

A method of producing bifunctional catalyst systems that include a carbon-coated metal catalyst may comprise: coating a metal catalyst particle with a carbon-containing small molecule to produce a coated metal catalyst particle; carbonizing the carbon-containing small molecule on the coated metal catalyst particle to produce a carbon-coated metal catalyst particle; and mixing the carbon-coated metal catalyst particle with an acid catalyst particle to produce an acid/metal bifunctional catalyst system. Further, a method of producing bifunctional catalyst systems that include a carbon-coated acid catalyst may be similarly performed by coating a metal catalyst particle with a carbon-containing small molecule to produce a coated metal catalyst particle; carbonizing the carbon-containing small molecule on the coated metal catalyst particle to produce a carbon-coated metal catalyst particle; and mixing the carbon-coated metal catalyst particle with an acid catalyst particle to produce an acid/metal bifunctional catalyst system.

Disclosed are a catalyst for carbonylation of dimethyl ether that has high catalyst activity and can be regenerated using a fluidized bed reactor, and a method for preparing the same. The catalyst for carbonylation of dimethyl ether includes a support having a first density; and ferrierite zeolite catalyst particles bound to a surface of the support via a polymer binder and having a second density smaller than the first density.

An exhaust gas purification catalyst including particles of a catalyst metal supported on secondary particles of an inorganic oxide, wherein when scanning transmission electron microscope-energy dispersive X-ray line analysis is performed from a surface of the secondary particles toward a center thereof, a support density of the catalyst metal on a surface side of the secondary particles is greater than the support density of the catalyst metal in a center part of the secondary particles.

This disclosure relates to red mud compositions. This disclosure also relates to methods of making red mud compositions. This disclosure additionally relates to methods of using red mud compositions.

A carbon-coated nickel oxide nanocomposite material, its preparation, and application thereof are provided. The nanocomposite material contains carbon-coated nickel oxide nanoparticles having a core-shell structure including an outer shell that is a graphitized carbon film optionally doped with nitrogen and an inner core comprising nickel oxide nanoparticle(s). The nanocomposite material has a carbon content of from greater than 0 wt % to not greater than about 5 wt %, based on the weight of the nanocomposite material.

A method for preparing a heterogeneous catalyst. The method comprises steps of: (a) combining (i) a support, (ii) an aqueous solution of a noble metal compound and (iii) a C.sub.2-C.sub.18 thiol comprising at least one hydroxyl or carboxylic acid substituent; to form a wet particle and (b) removing water from the wet particle by drying followed by calcination to produce the catalyst.

There is provided an ammoxidation catalyst for propylene having a structure in which molybdenum (Mo) oxide is supported first, and an oxide of heterogeneous metals including bismuth (Bi) is supported later. Related methods of making and using the catalyst are also provided.

A nanocomposite has a core-shell structure with an outer shell and an inner core. The, outer shell is a graphitized carbon film, and the inner core contains nickel oxide and alumina, with a nickel oxide content of 59%-80%, an alumina content of 19%-40%, and a carbon content of not more than 1%, based on the total weight of the nanocomposite. The process for catalytic combustion of volatile organic compounds may utilize the nanocomposite as a catalyst.

Incorporating a bimetal to a lamellar MFI zeolite structure includes providing a bimetallic-incorporated lamellar zeolite catalyst including a sodium source, aluminum source, silicon source, surfactant, sulfuric acid, deionized water, metal source, and molecular template; dissolving the sodium source in the deionized water creating a basic solution; adding the sulfuric acid, aluminum source, molecular template, and silicon source to the basic solution creating a mixture and adding the metal source to the mixture; dissolving the surfactant in the deionized water creating a surfactant solution; combining the surfactant solution and basic solution; heating the combined surfactant solution and basic solution in a rotating autoclave creating a metal-containing zeolite including the surfactant and molecular template in a structure of the metal-containing zeolite; removing a synthesized zeolite from the autoclave; drying the synthesized zeolite and creating a dry zeolite powder; calcining the dry zeolite powder creating a bimetal-containing lamellar MFI zeolite for chemical activation.