A method of dry reforming of methane (CH.sub.4) is provided. The method includes contacting at a temperature of 500 to 1000 degree Celsius (° C.) a reactant gas mixture including methane and carbon dioxide (CO.sub.2) with a bimetallic supported catalyst. The bimetallic supported catalyst includes a porous catalyst support and a bimetallic catalyst. The porous catalyst support includes aluminum oxide (Al.sub.2O.sub.3) and magnesium oxide (MgO). The bimetallic catalyst includes nickel (Ni) and copper (Cu) disposed on the porous catalyst support. The method further includes collecting a product gas mixture including hydrogen (H.sub.2) and carbon monoxide (CO). The bimetallic supported catalyst includes 8 to 16 weight percent (wt. %) nickel and 2 to 14 wt. % copper, each based on a total weight of bimetallic supported catalyst.

The present invention deals with catalysts for the conversion of CO by the shifting reaction of high temperature water gas, free from chromium and iron, consisting of alumina promoted by potassium, by zinc and copper oxides and in a second embodiment also additionally nickel. The catalysts thus prepared maintain high CO conversion activity, not having the environmental limitations or operating limitations with low excess steam in the process, which exist for catalysts in accordance with the state of the art. Such catalysts are used in the hydrogen or synthesis gas production process by the steam reforming of hydrocarbons, allow the use of low steam/carbon ratios in the process, exhibiting high activity and stability to thermal deactivation and lower environmental restrictions for production, storage, use and disposal, than the industrially used catalysts based on iron, chromium, and copper oxides.

Systems and methods are provided for performing hydrocarbon reforming within a reverse flow reactor environment (or another reactor environment with flows in opposing directions) while improving management of CO.sub.2 generated during operation of the reactor. The improved management of CO.sub.2 is achieved by making one or more changes to the operation of the reverse flow reactor. The changes can include using an air separation unit to provide an oxygen source with a reduced or minimized content of nitrogen and/or operating the reactor at elevated pressure during the regeneration stage. By operating the regeneration at elevated pressure, a regeneration flue gas can be generated that is enriched in CO.sub.2 at elevated pressure. The CO.sub.2-enriched stream can include primarily water as a contaminant, which can be removed by cooling while substantially maintaining the pressure of the stream. This can facilitate subsequent recovery and use of the CO.sub.2.

The present invention addresses to a method of preparing steam reforming catalysts, of the eggshell type, using a solution of glycerin, in polar solvent, preferably water, to occupy the pores of a support. Next, the solvent is removed and the support is impregnated with a nickel salt solution, which may contain promoters such as rare earths. The steps can be repeated until the desired content of the active phase and promoters is reached.

The present disclosure provides a process for cleaning raw product gas. The process includes contacting the raw product gas with a flow of catalyst to reform organic contaminants and inorganic contaminants in the raw product gas and to remove particulates. Further, the process includes cooling the resulting product gas via heat exchange with a heat exchange medium in the presence of char or a solid adsorbent medium to condense remaining organic contaminants and inorganic contaminants on the char or solid adsorbent medium and to filter out fine particulates.

Differing from the startup temperature of partial oxidation of butane (POB) reaction stimulated by conventional rhodium-based or nickel-based catalyst reaches 700° C. or above, the present invention particularly discloses a novel catalyst consisting of fluorite-type oxide support and Ni active metal for being applied in hydrogen production by low temperature partial oxidation of light hydrocarbon (POLH), so as to effectively reduce the startup temperature of the POLH reaction. In the present invention, the said light hydrocarbon means methane, ethane, propane, or butane. Moreover, a variety of experimental data have proved that this novel catalyst makes the startup temperature of POB reactions be lowered to 250° C. On the other hand, the experimental data have also proved that, the carbon deposition formed on the catalyst during POB reaction can be obviously improved after adding a few amount of platinum into the constituting ingredients of the novel catalyst.

Processes for conversion of methane and ethane into syngas and ethylene are provided. An exemplary process can include providing a reaction mixture of methane, ethane, oxygen, and carbon dioxide and contacting the reaction mixture with a catalyst that includes at least one metal oxide. The processes can be combined processes in which oxidative dry reforming of methane and dehydrogenation of ethane to ethylene with carbon dioxide and oxygen occur concurrently.

Provided is a method for manufacturing a diesel autothermal reforming catalyst, which includes: a step of coating a catalyst material containing an organic solvent, a binder, a plasticizer and a catalyst powder on a monolithic support; and a step of heat-treating the catalyst material at 500-900° C.

Catalysts for converting carbon dioxide and methane to synthesis gas include an alumina supported copper-nickel alloy composition having the formula Ni.sub.xCu.sub.y. The catalyst comprises about 70% to about 98% by weight of alumina in the catalyst, wherein x is an atomic percentage nickel content and y is an atomic percentage copper content, and wherein a ratio of x to y is about 3:1 to about 10:1. In one embodiment, the Ni—Cu catalyst composition according to the present disclosure is derived by state of the art electronic structure calculations based on Density Functional Theory (DFT).

The present invention refers to processes for obtaining steam reforming catalysts containing nickel, cerium, lanthanum and copper oxides, free from potassium or alkali metals, preferably with the oxide layer being located externally with a thickness of less than 0.5 mm on the support particle, preferably the support being based on alumina, magnesium aluminate, hexaaluminates or mixtures thereof. The catalysts according to present invention show high activity, resistance to thermal deactivation and resistance to coke accumulation in the steam reforming reaction of hydrocarbons.