The present disclosure relates to a catalyst system and a method for its preparation. The catalyst system of the present disclosure comprises a support, a promoter component impregnated in the support, and an active metal component comprising nickel, cobalt, and molybdenum impregnated in the support. In the active metal component the molar mass of molybdenum is greater than the combined molar mass of cobalt and nickel. The catalyst system of the present disclosure is used for upgrading crude bio oil.

In one aspect, the disclosure relates to relates to CO.sub.2-free methods of co-producing hydrogen and solid forms of carbon via methane decomposition. The methods are efficient, self-sustaining, and environmentally sound. In a further aspect, the disclosure relates to recyclable and recoverable catalysts supported by solid forms of carbon and methods for recycling the catalysts. In some aspects, the disclosure relates to catalysts that do not require support by solid forms of carbon. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

The invention relates to a process for preparing methyl mercaptan from a mixture of carbon oxide, hydrogen sulfide and hydrogen, in the presence of a catalyst based on molybdenum and potassium supported on zirconia, said catalyst not comprising any promoter.

The present disclosure relates to a catalyst composition comprising copper and iron on a support for use in a process for the synthesis of higher alcohols from a syngas feed stream comprising hydrogen and carbon monoxide, the catalyst composition being remarkable in that the support is one or more zeolite, in that the total content of iron and copper is ranging from 1 to 10 wt. % based on the total weight of the catalyst composition and as determined by inductively coupled plasma optical emission spectroscopy, in that the Cu/Fe bulk molar ratio is ranging from 1.1:1.0 to 5.0:1.0 as determined by XRF spectroscopy.

A method for preparing hydrogen-rich synthesis gas by degrading waste polyolefin plastics at a low temperature includes the following steps: weighing 1 part by weight of polyolefin waste plastics and 3 parts-80 parts by weight of hydrogen peroxide containing 0.25%-6% of H.sub.2O.sub.2; feeding the polyolefin waste plastics and the hydrogen peroxide into a hydrothermal reactor, and carrying out the oxidation pretreatment reaction at a reaction temperature of 150° C.-230° C. under a reaction pressure of 0.5 MPa-2 MPa for 30 minutes-90 minutes, and obtaining an aqueous-phase product and a gas-phase product after the reaction is finished; filling another hydrothermal reactor with a mesoporous carbon supported metal-based catalyst, and then introducing the aqueous-phase product into the hydrothermal reactor for a reforming reaction to obtain a hydrogen-rich synthesis gas product. In the whole process, the H.sub.2 yield is close to 11 mol/kg plastics, and the H.sub.2 concentration in the hydrogen-rich synthesis gas is close to 55%.

Catalyst for the hydrogenation of aromatic compounds capable of being obtained by the process comprising at least the following stages: a) the alumina support is brought into contact with at least one organic additive; b) the alumina support is brought into contact with at least one nickel metal salt, the melting point of said metal salt of which is between 20° C. and 150° C.; c) the solid mixture obtained on conclusion of stages a) and b) is heated with stirring; d) the catalyst precursor obtained on conclusion of stage c) is dried; e) a stage of heat treatment of the dried catalyst precursor obtained on conclusion of stage d) is carried out.

A catalyst for catalytic oxidation-deoxidation method of unsaturated hydrocarbon-containing gas has a carrier, an active component, a first co-agent component, and a second co-agent component loaded on the carrier respectively. The active component is one or more selected from the group consisting of oxides of Pt, Pd, Ru, Rh, Ag and Ir. The first co-agent component has one or more selected from the group consisting of a rare earth metal element, a group IVB metal element and a group VIII metal element; and the second co-agent component has one or more alkali metal element and alkaline earth metal element. The deoxidation method using the catalyst eliminates the need to add a reducing gas such as H.sub.2, allows hydrocarbons to react directly with oxygen to produce CO.sub.2 and H.sub.2O, achieves the goal of deoxidating a hydrocarbon-containing tail gas, and can prevent the generation of carbon deposits.

The present disclosure is to provide a catalyst for olefin production which is eco-friendly and has excellent conversion rates and selectivity and a preparation method thereof, and the catalyst for olefin production according to the present disclosure is one in which cobalt and zinc are supported with alumina. Particularly, the catalyst according to the present disclosure uses an amount of platinum that is about 400 times smaller than that of the conventional catalysts, and has high conversion rates and selectivity under conditions in which continuous reaction-regeneration process is possible without an additional hydrogen reduction process.

Aspects of the present disclosure generally relate to catalyst compositions including metal chalcogenides, processes for producing such catalyst compositions, processes for enhancing catalytic active sites in such catalyst compositions, and uses of such catalyst compositions in, e.g., processes for producing conversion products. In an aspect, a process for forming a catalyst composition is provided. The process includes introducing an electrolyte material and an amphiphile material to a metal chalcogenide to form the catalyst composition. In another aspect, a catalyst composition is provided. The catalyst composition includes a metal chalcogenide, an electrolyte material, and an amphiphile material. Devices for hydrogen evolution reaction are also provided.

Disclosed is a process for converting methane into value-added compounds. In this process, a gas mixture containing hydrogen as well as high-concentration acetylene formed through methane pyrolysis (e.g. non-oxidative coupling of methane) is selectively hydrogenated in the presence of a bimetallic supported catalyst. This process obtains ethylene from acetylene in the gas mixture while unreacted methane and hydrogen are recovered as byproducts and/or additionally recycled.