Waseda University

Other

Mitsubishi Chemical Corporation

L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

Hitachi Zosen Corporation

Chiyoda Corporation

Jxtg Nippon Oil & Energy Corporation

Microtracbel Corp.

Masahiko Matsukata

Kenji Suzuki

Akira Takahashi

Nobuhiro Kimura

Toshihiro Tomita

Takuya Hiramatsu

Kenichi Kawazuishi

Tatsuo Hamamatsu

Jean-Marie Friedt

Eiichi Ozawa

Kazuyuki Nakai

Kenichi Mimura

Masayuki Yoshida

Motomu Sakai

Toshinori Kojima

Yasuhito Sasaki

A method and a device for condensing a water-soluble organic matter, which can collect a highly concentrated water-soluble organic matter, save energy, and reduce cost of the device by reducing a membrane area. According to the present invention, the permeability ratio of a vapor-permeation separation membrane disposed at least immediately before a final outlet on a non-permeation side in the separation membrane device is lower than those of the other vapor-permeation separation membranes while a hybrid process combining distillation by the distillation column with membrane separation by the separation membrane devices including a plurality of vapor-permeation separation membranes is used and energy saving performance is maintained. Therefore, a highly concentrated and condensed component of a water-soluble organic matter is obtained. In addition, it is possible to reduce a membrane area of the vapor-permeation separation membranes in the whole separation membrane devices and to provide a technology leading to cost reduction.

Method for condensing water-soluble organic matter and device for condensing water-soluble organic matter

The present invention provides a method for selectively separating a straight-chain conjugated diene with high purity from a mixture containing the straight-chain conjugated diene and at least one type of straight-chain olefin. The method involves separating the straight-chain conjugated diene from the mixture containing the straight-chain conjugated diene and the straight-chain olefin using a zeolite membrane composite. The composite contains a porous support and a zeolite layer formed on the surface and in the fine pores of the support, and the zeolite contains an alkali metal cation.

Method for separating straight-chain conjugated diene

An adsorption characteristic measuring apparatus according to the invention supplies a predetermined adsorption gas to a film formed body as a sample accommodated in a sample tube to measure adsorption characteristics. In the inside of the sample tube, a void between an inner wall surface of the sample tube and the sample is filled with a particle-like filler having higher thermal conductivity than the adsorption gas under a measurement pressure. In addition, a glass rod as a dead volume reducing rod, a spacer ring for forming a thermal insulation space between the particle-like filler and the glass rod, and a reflective plate for reflecting radiant heat are disposed.

Adsorption characteristic measuring apparatus

A mordenite (MOR) zeolite membrane is formed on a porous substrate and has crystals that are substantially oriented in a specific crystalline direction. A method for producing the mordenite (MOR) zeolite membrane includes the steps of: immersing a porous substrate in a gel of raw materials which contains zeolite constitution elements in molar ratios of 40-400 of SiO /Al O , 10-120 of H O/Na O, and 10-40 of H O/SiO ; and subjecting the gel in the presence of the porous substrate to hydrothermal synthesis at 150&deg; C. or more to crystallize the MOR zeolite constitution elements and form a MOR zeolite membrane on the porous substrate.

Mordenite zeolite membrane and method for producing the same

A highly heat-resistant and hydrothermal-resistant &bgr;-zeolite having a SiO,/Al,O,ratio of 80 or more, which is constituted by primary particles having an average particle diameter of 30 nm or more or by primary particles having such a particle size distribution that the 10% particle diameter is 20 nm or more; and an adsorbent for automobile exhaust gas purification, using said &bgr;-zeolite. The &bgr;-zeolite and the adsorbent can be produced reliably so as to have guaranteed properties.

Highly heat resistant &bgr;-zeolite and absorbent for automobile exhaust gas purification and adsorbent for automobile exhaust gas purification

A process for coating powders with ultrafine particles of silicon, silicon oxide, silicon nitride or alloys thereof, entailing:

Process for the elaboration of powders uniformly coated with ultrafine

Growing community of inventors

Tokyo, Japan

Masahiko Matsukata