Provided is a structured catalyst for hydrodesulfurization that suppresses the decline in catalytic activity and achieves efficient hydrodesulfurization. The structured catalyst for hydrodesulfurization (1) includes a support (10) of a porous structure composed of a zeolite-type compound, and at least one catalytic substance (20) present in the support (10), the support (10) having channels (11) connecting with each other, and the catalytic substance (20) being present at least in the channels (11) of the support (10).

Provided is a structured catalyst for hydrodesulfurization that suppresses the decline in catalytic activity and achieves efficient hydrodesulfurization. The structured catalyst for hydrodesulfurization (1) includes a support (10) of a porous structure composed of a zeolite-type compound, and at least one catalytic substance (20) present in the support (10), the support (10) having channels (11) connecting with each other, and the catalytic substance (20) being present at least in the channels (11) of the support (10).

A process is provided for the catalytic cracking of a glyceride oil feedstock with a catalyst composition containing a deactivated phosphorus-containing ZSM-5 light olefins selective additive.

A process is provided for the catalytic cracking of a glyceride oil feedstock with a catalyst composition containing a deactivated phosphorus-containing ZSM-5 light olefins selective additive.

Provided is a method for producing bio-aromatic compounds from glycerol. The method uses a primary alcohol, secondary alcohol or a combination thereof as a mixing medium in converting glycerol into an aromatic compound, and thus overcomes the high viscosity of glycerol and improves the problem of rapid catalytic deactivation, thereby increasing the yield of aromatic compounds and improving the stability of catalyst. In addition, the method for producing bio-aromatic compounds uses a zeolite-based catalyst that is a kind of solid acid catalysts, and suggests optimum reaction conditions, and thus imparts a high added value to glycerol produced as a byproduct in a biodiesel production process and increases the cost-efficiency of process.

Provided is a method for producing bio-aromatic compounds from glycerol. The method uses a primary alcohol, secondary alcohol or a combination thereof as a mixing medium in converting glycerol into an aromatic compound, and thus overcomes the high viscosity of glycerol and improves the problem of rapid catalytic deactivation, thereby increasing the yield of aromatic compounds and improving the stability of catalyst. In addition, the method for producing bio-aromatic compounds uses a zeolite-based catalyst that is a kind of solid acid catalysts, and suggests optimum reaction conditions, and thus imparts a high added value to glycerol produced as a byproduct in a biodiesel production process and increases the cost-efficiency of process.

Processes of catalytically pyrolyzing solid hydrocarbonaceous materials in a downflow fluid bed reactor and regenerating the catalyst in an upflow fluidized bed reactor are described. Systems and compositions useful in the catalytic pyrolysis of plastics are also described.

Processes of catalytically pyrolyzing solid hydrocarbonaceous materials in a downflow fluid bed reactor and regenerating the catalyst in an upflow fluidized bed reactor are described. Systems and compositions useful in the catalytic pyrolysis of plastics are also described.

Embodiments of the present disclosure are directed to processes for aromatizing hydrocarbons includes contacting the hydrocarbons with a catalyst including at least two different metal modifiers dispersed on surfaces of a hydrogen-form medium-pore zeolite support. Each of the at least two different metal modifiers comprises a metal selected from the group consisting of IUPAC Groups 3-12, and lanthanide metals, and the catalyst is substantially free of gallium. Contacting the hydrocarbons with the catalyst causes a least a portion of the hydrocarbons to undergo a chemical reaction to form aromatic hydrocarbons.

Method for producing monocyclic aromatic hydrocarbons includes a cracking and reforming reaction step of obtaining products containing monocyclic aromatic hydrocarbons having 6 to 8 carbon atoms and a heavy fraction having 9 or more carbon atoms by bringing the feedstock oil into contact with a catalyst for producing monocyclic aromatic hydrocarbons containing crystalline aluminosilicate to cause a reaction, a catalyst separation step of separating and removing the catalyst for producing monocyclic aromatic hydrocarbons together with tricyclic aromatic hydrocarbons contained in the products from a mixture of the products and a small amount of the catalyst for producing monocyclic aromatic hydrocarbons carried by the products, both of which are derived in the cracking and reforming reaction step, and a purification and recovery step of purifying and recovering the monocyclic aromatic hydrocarbons having 6 to 8 carbon atoms which are separated from the products formed in the cracking and reforming reaction step.