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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11090617 B1

PDFFull Text
Date of Patent:
Aug. 17, 2021

Filed:

Aug. 25, 2014

Porous support-zeolite membrane composite

Applicant:

Mitsubishi Chemical Corporation, Chiyoda-ku, JP;

Inventors:

Miki Yamada, Kanagawa, JP;

Takahiko Takewaki, Kanagawa, JP;

Mikio Hayashi, Kanagawa, JP;

Naoko Fujita, Kanagawa, JP;

Hidekazu Miyagi, Kanagawa, JP;

Assignee:

MITSUBISHI CHEMICAL CORPORATION, Chiyoda-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Jason M Greene

Assistant Examiner:

Eric J McCullough

Int. Cl.
CPC ...
B01D 71/02 (2006.01); B01D 69/02 (2006.01); B01D 67/00 (2006.01); C01B 39/02 (2006.01); C07C 29/76 (2006.01); C07C 51/47 (2006.01); C01B 39/46 (2006.01); C07C 37/82 (2006.01); C01B 39/48 (2006.01); B01D 69/12 (2006.01); C30B 7/10 (2006.01); B01D 53/22 (2006.01); B01D 61/36 (2006.01);
U.S. Cl.
CPC ...
B01D 71/028 (2013.01); B01D 53/228 (2013.01); B01D 67/0051 (2013.01); B01D 67/0093 (2013.01); B01D 69/02 (2013.01); B01D 69/125 (2013.01); C01B 39/026 (2013.01); C01B 39/46 (2013.01); C01B 39/48 (2013.01); C07C 29/76 (2013.01); C07C 37/82 (2013.01); C07C 51/47 (2013.01); C30B 7/10 (2013.01); B01D 61/362 (2013.01); B01D 2053/221 (2013.01); B01D 2323/12 (2013.01); B01D 2323/24 (2013.01); B01D 2323/40 (2013.01); B01D 2325/02 (2013.01); B01D 2325/12 (2013.01);
Abstract

A porous support-zeolite membrane composite comprising an inorganic porous support and a zeolite membrane provided on, wherein the zeolite membrane contains a zeolite having a microporous structure of 8-membered oxygen ring or less, and a molar ratio of SiO/AlOin the zeolite membrane surface is larger by at least 20 than a molar ratio of SiO/AlOin the zeolite membrane itself, or a water adsorption of the porous support-zeolite membrane composite at a relative pressure of 0.8, as determined from a water vapor adsorption isotherm of the porous support-zeolite membrane composite, is at least 82% of a water adsorption of the porous support-zeolite membrane composite under the same condition as above after one-week immersion of the porous support-zeolite membrane composite in an aqueous 90 mass % acetic acid solution at room temperature.

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