A method for making a functional structural body includes a skeletal body of a porous structure composed of a zeolite-type compound, and at least one type of metallic nanoparticles present in the skeletal body, the skeletal body having channels connecting with each other, the metallic nanoparticles being present at least in the channels of the skeletal body.

The present invention relates a system for the treatment of an exhaust gas of a diesel combustion engine, said system comprising a specific NOx adsorber component, a diesel oxidation catalyst (DOC) component, a selective catalytic reduction (SCR) component, a gas heating component, and a reductant injector, wherein in said system, the specific NOx adsorber component is arranged upstream of the gas heating component, the reductant injector is arranged up-stream of the SCR component, the gas heating component is arranged upstream of the reductant injector, the DOC component is arranged upstream of the reductant injector, and the DOC component and the gas heating component are directly consecutive components. Further, the present invention relates a process for preparing such a system and use thereof.

The present invention relates a system for the treatment of an exhaust gas of a diesel combustion engine, said system comprising a specific NOx adsorber component, a diesel oxidation catalyst (DOC) component, a selective catalytic reduction (SCR) component, a gas heating component, and a reductant injector, wherein in said system, the specific NOx adsorber component is arranged upstream of the gas heating component, the reductant injector is arranged up-stream of the SCR component, the gas heating component is arranged upstream of the reductant injector, the DOC component is arranged upstream of the reductant injector, and the DOC component and the gas heating component are directly consecutive components. Further, the present invention relates a process for preparing such a system and use thereof.

The invention relates to the production of aromatic hydrocarbon by the conversion of a feed comprising saturated hydrocarbon. At least a portion of the saturated hydrocarbon is converted to olefinic hydrocarbon. Aromatic hydrocarbon is produced from at least a portion of the olefinic hydrocarbon using at least one dehydrocyclization catalyst comprising dehydrogenation and molecular sieve components.

The present invention provides a catalyst for purifying a combustion exhaust gas and a method for purifying a combustion exhaust gas, capable of efficiently removing a nitrogen oxide in an exhaust gas in a relatively low temperature range discharged from an internal combustion engine, such as a marine diesel engine, with a smaller amount of the reducing agent than the ordinary techniques. The catalyst for purifying a combustion exhaust gas is a catalyst used in a purification method of a combustion exhaust gas of removing a nitrogen oxide in a combustion exhaust gas by making the catalyst into contact with the combustion exhaust gas having an alcohol added thereto as a reducing agent, the catalyst containing a catalyst support containing zeolite, having supported thereon at least one metal selected from the group consisting of Ag (silver), Bi (bismuth), and Pb (lead).

The present invention provides a catalyst for purifying a combustion exhaust gas and a method for purifying a combustion exhaust gas, capable of efficiently removing a nitrogen oxide in an exhaust gas in a relatively low temperature range discharged from an internal combustion engine, such as a marine diesel engine, with a smaller amount of the reducing agent than the ordinary techniques. The catalyst for purifying a combustion exhaust gas is a catalyst used in a purification method of a combustion exhaust gas of removing a nitrogen oxide in a combustion exhaust gas by making the catalyst into contact with the combustion exhaust gas having an alcohol added thereto as a reducing agent, the catalyst containing a catalyst support containing zeolite, having supported thereon at least one metal selected from the group consisting of Ag (silver), Bi (bismuth), and Pb (lead).

A metal-doped or metal-exchanged zeolite is disclosed, wherein the doping metal is present in the zeolite in the form of individual atoms i.e. as monomeric and/or dimeric species. Further, a process for the preparation of such a metal-doped or metal-exchanged zeolite is disclosed. The metal-doped zeolites are useful, in particular, as catalysts for the reduction of nitrogen oxides.

A metal-doped or metal-exchanged zeolite is disclosed, wherein the doping metal is present in the zeolite in the form of individual atoms i.e. as monomeric and/or dimeric species. Further, a process for the preparation of such a metal-doped or metal-exchanged zeolite is disclosed. The metal-doped zeolites are useful, in particular, as catalysts for the reduction of nitrogen oxides.

The invention relates to the production of aromatic hydrocarbon by the conversion of a feed comprising saturated hydrocarbon. At least a portion of the saturated hydrocarbon is converted to olefinic hydrocarbon. Aromatic hydrocarbon is produced from at least a portion of the olefinic hydrocarbon using at least one dehydrocyclization catalyst comprising dehydrogenation and molecular sieve components.

Aspects of the present invention relate to a process for the preparation of a zeolitic material having a CHA-type framework structure comprising YO.sub.2 and X.sub.2O.sub.3, wherein said process comprises the steps of: (1) providing a mixture comprising one or more sources for YO.sub.2, one or more sources for X.sub.2O.sub.3, and one or more tetraalkylammonium cation R.sup.1R.sup.2R.sup.3R.sup.4N.sup.+-containing compounds as structure directing agent; (2) crystallizing the mixture obtained in step (1) for obtaining a zeolitic material having a CHA-type framework structure;
wherein Y is a tetravalent element and X is a trivalent element,
wherein R.sup.1, R.sup.2, and R.sup.3 independently from one another stand for alkyl,
wherein R.sup.4 stands for cycloalkyl, and
wherein the mixture provided in step (1) does not contain any substantial amount of a source for Z.sub.2O.sub.5, wherein Z is P, as well as to zeolitic materials which may be obtained according to the inventive process and to their use.