A catalyst structure includes a porous support structure, where the support structure includes an aluminosilicate material and any two or more metals loaded in the porous support structure selected from Ga, Ag, Mo, Zn, Co and Ce. The catalyst structure is used in a hydrocarbon upgrading process that is conducted in the presence of methane, nitrogen or hydrogen.

A cluster-supporting catalyst including porous carrier particles having acid sites, and catalyst metal clusters supported within the pores of the porous carrier particles. In the cluster-supporting catalyst including porous carrier particles having acid sites, and catalyst metal clusters supported within the pores of the porous carrier particles, the catalyst metal may be rhodium, the catalyst metal may be palladium, the catalyst metal may be platinum, or the catalyst metal may be copper.

The present invention concerns a process for forming a primary or a secondary amine via amination reaction comprising: reacting an alcohol with an amine in the presence of a zeolite comprising a transition metal chosen in the group consisting of Group 8 to 12 elements of the Periodic Table and any combination thereof.

The present invention relates to a process for producing monoaromatic hydrocarbons from a hydrocarbon feed comprising polyaromatics, the process comprising contacting the feed at process conditions with a catalyst comprising a mixture of zeolite Y and a hydrogenation catalyst comprising one or more hydrogenation metals on a solid catalyst support.

Provided are a low-temperature SCR catalyst for denitrating diesel vehicle exhaust, and preparation method thereof. The catalyst uses a molecular sieve as a carrier, and uses metallic elements such as copper and iron as active components. The catalyst preparation method comprises: preprocessing the molecular sieve; conducting multiple equal-volume impreparations; after impreparation, drying to dehydrate, and calcining; and finally pulping and coating to prepare the catalyst. The catalyst employs base metals such as copper and iron instead of precious metals as active components, thus reducing costs, being harmless to humans, and being environmentally friendly. The preparation method of the catalyst is simple and feasible with low requirements for raw materials, employs a repeated but small-quantity method of equal volume impregnation; and enables active ions to be dispersed more uniformly as compared with the existing conventional preparation methods, thus improving utilization and improving low-temperature catalytic activity and durability.

A method for producing a cluster-supporting catalyst, the cluster-supporting catalyst including porous carrier particles that has acid sites, and catalyst metal clusters supported within the pores of the porous carrier particles, includes the following steps: providing a dispersion liquid containing a dispersion medium and the porous carrier particles dispersed in the dispersion medium; and in the dispersion liquid, forming catalyst metal clusters having a positive charge, and supporting the catalyst metal clusters on the acid sites within the pores of the porous carrier particles through an electrostatic interaction.

An improved cluster-supporting catalyst has heteroatom-removed zeolite particles, and catalyst metal clusters supported within the pores of the heteroatom-removed zeolite particles. A method for producing a cluster-supporting catalyst includes the following steps: providing a dispersion liquid containing a dispersion medium and the heteroatom-removed zeolite particles dispersed in the dispersion medium; and in the dispersion liquid, forming catalyst metal clusters having a positive charge, and supporting the catalyst metal clusters within the pores of the heteroatom-removed zeolite particles through an electrostatic interaction.

Cluster-supporting catalyst having an improved heat resistivity, and method for producing the same are provided. The cluster-supporting catalyst includes boron-substitute zeolite particles, and catalyst metal clusters supported within the pores of the boron-substitute zeolite particles. The method for producing a cluster-supporting catalyst, includes the following steps: providing a dispersion liquid containing a dispersion medium and boron-substitute zeolite particles dispersed in the dispersion medium; and in the dispersion liquid, forming catalyst metal clusters having a positive charge, and supporting the catalyst metal clusters on the acid sites within the pores of the boron-substitute zeolite particles through an electrostatic interaction.

Hydrocarbon (HC) traps are disclosed. The HC trap may include a first zeolite material having an average pore diameter of at least 5.0 angstroms and configured to trap hydrocarbons from an exhaust stream and to release at least a portion of the trapped hydrocarbons at a temperature of at least 225 C. The HC trap may also include a second zeolite material having an average pore diameter of less than 5.0 angstroms or larger than 7.0 angstroms. One or both of the zeolite materials may include metal ions, such as transition, Group 1A, or platinum group metals. The HC trap may include two or more discrete layers of zeolite materials or the two or more zeolite materials may be mixed. The multiple zeolite HC trap may form coke molecules having a relatively low combustion temperature, such as below 500 C.

The present invention provides a method for performing a purification treatment on a harmful substance-containing liquid, the method enabling an efficient purification treatment of a harmful substance-containing liquid by using dissolved ozone being an oxidizing agent with high level of safety, and a harmful substance-containing liquid purification treatment apparatus for carrying out the method. A method for performing a purification treatment on a harmful substance-containing liquid, the method comprising adding and mixing dissolved ozone into a harmful substance-containing liquid containing a harmful substance, thereafter bringing the harmful substance-containing liquid into contact with a transition metal-containing oxide having a BET specific surface area of 80 m.sup.2/g or more, adsorbing ozone, and adsorbing a harmful substance, and then allowing the harmful substance-containing liquid to flow to accelerate oxidation of the harmful substance by dissolved ozone, thereby performing a highly efficient oxidative decomposition, and a harmful substance-containing liquid purification treatment apparatus for carrying out the method.