Abstract: The present invention provides a method which can produce ?-caprolactam with a good selectivity by reacting cyclohexanone oxime with a good conversion in a vapor phase Beckmann rearrangement reaction. Disclosed is a method for producing ?-caprolactam, which comprises performing a vapor phase Beckmann rearrangement reaction of cyclohexanone oxime in the presence of a pentasil type zeolite, wherein the pentasil type zeolite is a zeolite obtained by subjecting a mixture containing a silicon compound, water, and a compound represented by formula (I): [(R1)3N+—(CH2)m—N+(R1)2—(CH2)m—N+(R1)3]·3/n(A)??(I) wherein R1 represents an alkyl group having 1 to 4 carbon atoms, A represents an n-valent anion, m represents an integer of 5 to 7, and n represents an integer of 1 to 3, to a hydrothermal synthesis reaction.

Abstract: It is an object of the present invention to provide a silica nanoparticle structure and a process for producing the same, which allow silica nanoparticles to be order-controlled to thereby make it possible to extend the application field of the silica nanoparticles ever more markedly. Silica nanoparticle structure components 2 can be prepared in which the silica nanoparticles 3 conventionally staying dispersed in a colloid solution can be converted into one-dimensionally ordered ones, and then adjacent silica nanoparticles are so firmly coupled as to be unable to disperse even if external force is applied thereto. Thus, the silica nanoparticles 3 become available for a variety of applications with the silica nanoparticles 3, conventionally staying dispersed in a colloid solution, order-controlled. Hence, the silica nanoparticle structure 1 can be provided which can extend the application field of the silica nanoparticles 3 still more markedly.

Abstract: Molecular sieves and the use of such materials as hydrocarbon traps, particularly for reducing the emissions associated with the combustion of hydrocarbon fuels are described. Specifically, the use of molecular sieves such as zeolites as adsorbents for hydrocarbon gases, especially exhaust gases such as are formed during the combustion of hydrocarbons, and more particularly to the adsorption of hydrocarbon gases formed during the cold start operation of an internal combustion engine is described.

Abstract: The present invention provides a method which can produce ?-caprolactam with a good selectivity by reacting cyclohexanone oxime with a good conversion in a vapor phase Beckmann rearrangement reaction. Disclosed is a method for producing ?-caprolactam, which comprises performing a vapor phase Beckmann rearrangement reaction of cyclohexanone oxime in the presence of a pentasil type zeolite, wherein the pentasil type zeolite is a zeolite obtained by subjecting a mixture containing a silicon compound, water, and a compound represented by formula (I): [(R1)3N+—(CH2)m—N+(R1)2—(CH2)m—N+(R1)3]·3/n (A) ??(I) wherein R1 represents an alkyl group having 1 to 4 carbon atoms, A represents an n-valent anion, m represents an integer of 5 to 7, and n represents an integer of 1 to 3, to a hydrothermal synthesis reaction.

Abstract: The invention relates to an HC trap catalyst and a preparation method for the HC trap catalyst. The HC trap catalyst includes an HC adsorbent for adsorbing HC in exhaust gas exhausted from an internal combustion engine, and an oxidation accelerating element contained in the HC adsorbent for accelerating partial oxidation of the HC adsorbed by the HC adsorbent. With the above configuration, HC in exhaust gas can be partially oxidized. As a result, the oxidation reactivity of HC can be improved remarkably. Further, since the oxidation accelerating element is contained in the HC adsorbent, the HC adsorbed in the HC adsorbent can be partially oxidized directly. As a result, the partial oxidation can be promoted efficiently.

Abstract: Provided is a process for forming catalyst metal fine particles for synthesizing a single-walled carbon nanotube by a CCVD process on a substrate, wherein a solution is prepared by dispersing or dissolving a catalyst metal salt of an organic compound or an inorganic compound in a solvent; the solution is coated on the substrate and dried; then, the substrate is heated in an oxidative atmosphere to thereby remove the solvent component remaining on the substrate by oxidative decomposition, and fine particles of an oxide of the catalyst metal are formed on the substrate; and then, the oxide of the catalyst metal is reduced in an atmosphere of an inert gas or a gas having reducing action to fix the catalyst metal fine particles on the substrate.

Abstract: Molecular sieves and the use of such materials as hydrocarbon traps, particularly for reducing the emissions associated with the combustion of hydrocarbon fuels are described. Specifically, the use of molecular sieves such as zeolites as adsorbents for hydrocarbon gases, especially exhaust gases such as are formed during the combustion of hydrocarbons, and more particularly to the adsorption of hydrocarbon gases formed during the cold start operation of an internal combustion engine is described.

Abstract: The present invention discloses a gate control device which controls the passage (e.g., entry, exit, etc.) through a passageway of both authorized persons and unauthorized companions of authorized persons into a protected room. The device may be configured such that the unauthorized companions may be permitted or denied passage if the unauthorized companions are with an authorized person. For example, the device may be configured to allow an entire group of persons to enter a room if only one authorized person is present. In another example, the device may deny passage to the entire group if it contains even one unauthorized person.