公开(公告)号：US20230339766A1

公开(公告)日：2023-10-26

申请号：US18342828

申请日：2023-06-28

申请人： NGK INSULATORS, LTD.

发明人： Makoto MIYAHARA ,  Kenichi NODA ,  Naoto KINOSHITA ,  Ryotaro YOSHIMURA

IPC分类号： C01B39/46

CPC分类号： C01B39/46 ,  C01P2002/78 ,  C01P2002/74 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2002/72

摘要： In an RHO-type zeolite, in a case where a peak at a lattice spacing of 9.96 to 11.25 Å in a measurement using a powder X-ray diffraction method is assumed as a reference peak and an intensity of the reference peak is assumed as 100, a relative intensity of a peak at a lattice spacing of 4.59 to 4.85 Å is 150 to 300, a relative intensity of a peak at a lattice spacing of 3.55 to 3.64 Λ is 200 to 500, and a relative intensity of a peak at a lattice spacing of 2.98 to 3.06 Å is 100 to 200.

公开(公告)号：US20240278193A1

公开(公告)日：2024-08-22

申请号：US18641521

申请日：2024-04-22

申请人： NGK INSULATORS, LTD.

发明人： Shunsuke KAMATA ,  Kenichi NODA ,  Naoto KINOSHITA ,  Ryotaro YOSHIMURA

IPC分类号： B01D71/02 ,  B01D67/00 ,  C02F1/44 ,  C02F101/34

CPC分类号： B01D71/0281 ,  B01D67/0051 ,  C02F1/448 ,  C02F2101/34

摘要： A zeolite membrane complex includes a porous support and a zeolite membrane formed on the support and containing aluminum, silicon, and carbon. In the zeolite membrane, the molar ratio of carbon to the sum of aluminum and silicon is higher than or equal to 0.1. In the zeolite membrane complex, when a mixed solution having a temperature of 60° C. and containing 50 mass % of water and 50 mass % of ethanol is supplied with a permeate pressure of −94.66 kPaG, the total permeation flux is higher than or equal to 1.0 kg/m2 h, and a separation factor of water to ethanol is greater than or equal to 1000.

公开(公告)号：US20210370243A1

公开(公告)日：2021-12-02

申请号：US17444755

申请日：2021-08-10

申请人： NGK INSULATORS, LTD.

发明人： Ryotaro YOSHIMURA ,  Kenichi NODA

IPC分类号： B01D71/02 ,  B01D69/10 ,  B01D67/00 ,  B01D53/22

摘要： A zeolite membrane complex includes a porous support and a zeolite membrane formed on the support. Water molecules are adsorbed in the zeolite membrane. A decreasing rate of water content in the zeolite membrane from 250° C. to 500° C. is 0.1% or more.

公开(公告)号：US20240286088A1

公开(公告)日：2024-08-29

申请号：US18641496

申请日：2024-04-22

申请人： NGK INSULATORS, LTD.

发明人： Shunsuke KAMATA ,  Kenichi NODA ,  Naoto KINOSHITA ,  Ryotaro YOSHIMURA

IPC分类号： B01D71/02 ,  B01J8/00

CPC分类号： B01D71/0281 ,  B01J8/009

摘要： A zeolite membrane complex includes a porous support and a zeolite membrane made of an LTA-type zeolite and formed on the support. The zeolite membrane has a Si/Al molar ratio of higher than or equal to 1.74 and lower than or equal to 2.80, or the zeolite membrane has a Si/Al molar ratio of higher than or equal to 1.2 and, in an X-ray diffraction pattern obtained by X-ray irradiation of the surface of the zeolite membrane, at least either a peak intensity around 2θ=24.0° or a peak intensity around 2θ=30.0° is 0.85 times or more a peak intensity around 2θ=7.2°.

公开(公告)号：US20200306700A1

公开(公告)日：2020-10-01

申请号：US16899981

申请日：2020-06-12

申请人： NGK INSULATORS, LTD.

发明人： Kenichi NODA ,  Aya MIURA ,  Ryotaro YOSHIMURA

IPC分类号： B01D71/02 ,  B01D69/10 ,  C01B39/54 ,  B01D67/00 ,  B01D53/22

摘要： A zeolite membrane complex includes a support and a zeolite membrane formed on the support. The zeolite membrane is of an SAT-type zeolite. Among particles on the surface of the zeolite membrane, particles that have aspect ratios higher than or equal to 1.2 and lower than or equal to 10 account for 85% or more of the area of the surface of the zeolite membrane. This improves the orientations of the particles and also reduces the interstices among the particles. As a result, the denseness of the zeolite membrane is improved. Accordingly, for example, high gas separation performance can be obtained when the zeolite membrane complex is used as a gas separation membrane.

公开(公告)号：US20190292062A1

公开(公告)日：2019-09-26

申请号：US16298240

申请日：2019-03-11

申请人： NGK INSULATORS, LTD.

发明人： Ryotaro YOSHIMURA ,  Aya MIURA ,  Kenichi NODA

IPC分类号： C01B37/04 ,  B01D53/22 ,  B01D71/02 ,  B01D67/00

摘要： Seed crystals are crystals of zeolite to be attached onto a support in production of a zeolite membrane complex including the support and a zeolite membrane formed on the support. The specific surface area of the seed crystals is not smaller than 10 m2/g and not larger than 150 m2/g. The strength obtained from a crystal component at a diffraction angle 2θ indicating a maximum peak in a range of diffraction angle 2θ from 12° to 25° in an X-ray diffraction pattern obtained by emitting X-ray to the seed crystals is not less than once and not more than 30 times that obtained from an amorphous component. It is thereby possible to improve adherence of the seed crystals to the support.

公开(公告)号：US20190002350A1

公开(公告)日：2019-01-03

申请号：US16123215

申请日：2018-09-06

申请人： NGK INSULATORS, LTD.

发明人： Masahiro FURUKAWA ,  Ryotaro YOSHIMURA

IPC分类号： C04B35/117 ,  C04B38/06 ,  C04B38/00 ,  B01D39/20

CPC分类号： C04B35/117 ,  B01D39/2075 ,  B01D69/10 ,  C04B38/00 ,  C04B38/0074 ,  C04B38/009 ,  C04B38/06 ,  C04B38/0695 ,  C04B2111/40 ,  C04B2235/3217 ,  C04B2235/3418

摘要： The monolithic base is a porous alumina body that includes pores and that is configured by alumina particles as an aggregate and an oxide phase as a binding material. The alumina particles include microscopic alumina particles having a particle diameter of greater than or equal to 0.5 μm and less than or equal to 5 μm and coarse alumina particles having a particle diameter of greater than 5 μm. The number of microscopic alumina particles that are encapsulated in the oxide phase is greater than or equal to 50% of the total number of microscopic alumina particles and coarse alumina particles.