摘要:
Disclosed is a gas separation composite membrane comprising a polyamidoamine dendrimer (A) having a specific group, a vinyl alcohol-based polymer (B) containing 0.5 to 5 mol% of carboxyl groups, and a crosslinking agent (C) having an azetidinium group, wherein the mass ratio (A)/(C) of the polyamidoamine dendrimer (A) to the crosslinking agent (C) having an azetidinium group is 20/80 to 65/35, and the mass ratio (B)/(C) of the vinyl alcohol-based polymer (B) to the crosslinking agent (C) having an azetidinium group is 20/80 to 80/20. Thus, a gas separation composite membrane capable of separating a specific type of gas from a mixed gas containing water vapor is provided.
摘要:
A method of cleaning in a CVD device capable of efficiently removing by-products such as SiO2 and Si3N4 attached to and deposited on the inner wall of a reaction chamber and the surfaces of an electrode when forming films, being very low in cleaning gas exhaust amount, affecting very little environments such as global warming, and contributing to cost reduction. After films are formed on a substrate by a CVD device, a fluorine-containing compound-containing fluorine-based cleaning gas is turned into plasma by a remote plasma generator , the plasma-based cleaning gas is introduced into a reaction chamber, and by-products deposited on the inside of the reaction chamber are removed.
摘要:
Disclosed is an aqueous solution for absorbing and recovering carbon dioxide from a carbon dioxide-containing gas, the aqueous solution containing 50 to 70 wt% of a secondary amine compound represented by Formula (1): wherein R represents a straight- or branched-chain alkyl group having 3 to 5 carbon atoms; and a surfactant. Also disclosed is a method for absorbing and recovering carbon dioxide using the aqueous solution.
摘要:
Disclosed is a method for recovering carbon dioxide from a gas containing carbon dioxide, comprising the step (1) of bringing a gas containing carbon dioxide into contact with an aqueous solution containing 2-isopropylaminoethanol and at least one substance selected from the group consisting of piperazines and alkanolamines to absorb carbon dioxide into the aqueous solution; and the step (2) of heating the aqueous solution containing carbon dioxide absorbed therein, which is obtained in the step (1), to separate and recover carbon dioxide from the solution.
摘要:
To provide: a production method using a catalyst which can substantially suppress leaching of active metal components and exhibit high activity for both reactions of transesterification of glycerides and esterification of free fatty acids each contained in a fat or oil; and the catalyst. A method for producing fatty acid alkyl esters and/or glycerin comprising a step of bringing a fat or oil into contact with an alcohol in the presence of a catalyst, wherein the catalyst is at least one catalyst selected from the group consisting of the following (I) to (V): (I) a metal oxide having an ilmenite structure and/or a slyrankite structure; (II) an oxide containing a metallic element belonging to the Group 12 and a metallic element belonging to the Group 4; (III) a mixed oxide containing a metallic element belonging to the Group 12 and a tetravalent transition metallic element; (IV) a metal oxide containing zirconium and at least one metallic element selected from the group consisting of metallic elements belonging to the Groups 4, 5 and 8; and (V) a metal oxide containing anatase type titanium oxide and/or rutile type titanium oxide, and the metal oxide containing a sulfur component of 700 ppm or less.
摘要:
There is provided a CVD apparatus capable of efficiently removing a by-product such as SiO 2 or Si 3 N 4 which is stuck and deposited onto the surface of an internal wall, an electrode or the like in a CVD chamber in a film forming process, and furthermore, executing cleaning having a small damage over an upper electrode and a counter electrode stage (a lower electrode) and manufacturing a thin filmof high quality, and a CVD apparatus cleaning method using the same. In a CVD apparatus cleaning method of introducing a cleaning gas to carry out plasma cleaning over an inside of a CVD chamber after forming a deposited film on a surface of a substrate, a frequency of an RF to be applied to an RF electrode is switched into a first frequency to be applied for forming a film and a second frequency to be applied when executing the plasma cleaning.
摘要:
To produce a useful organic compound under anaerobic conditions, it is intended to provide a method of inducing the expression of the promoter functions of various genes in a coryneform bacterium participating in the exertion of the functions to thereby highly efficiently exert the functions of the coryneform bacterium under such conditions. More specifically speaking, it is intended to efficiently and highly express various protein genes necessary in producing a target substance while inhibiting the expression of unnecessary protein genes by providing a method of enhancing and/or inhibiting the promoter functions relating to the above-described genes. A DNA fragment which is useful as a primer to be transferred into a coryneform bacterium capable of highly efficiently producing a useful substance such as lactic acid or succinic acid at a high yield.
摘要:
A method for removing harmful substances in a vent gas containing a halogen or halogen compound gas remaining in the pipeline of a cylinder cabinet, which comprises contacting said vent gas with a treating agent comprising an alkaline earth metal compound, an alkali metal compound, zeolite, and a carbonaceous material.