JP7374320B2 - 分離膜複合体、分離膜複合体の製造方法および分離方法 - Google Patents
分離膜複合体、分離膜複合体の製造方法および分離方法 Download PDFInfo
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- JP7374320B2 JP7374320B2 JP2022527516A JP2022527516A JP7374320B2 JP 7374320 B2 JP7374320 B2 JP 7374320B2 JP 2022527516 A JP2022527516 A JP 2022527516A JP 2022527516 A JP2022527516 A JP 2022527516A JP 7374320 B2 JP7374320 B2 JP 7374320B2
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- separation membrane
- support
- separation
- zeolite
- zeolite membrane
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- QHMQWEPBXSHHLH-UHFFFAOYSA-N sulfur tetrafluoride Chemical compound FS(F)(F)F QHMQWEPBXSHHLH-UHFFFAOYSA-N 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
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Description
[関連出願の参照]
本願は、2020年5月25日に出願された日本国特許出願JP2020-090315からの優先権の利益を主張し、当該出願の全ての開示は、本願に組み込まれる。
11 支持体
12 ゼオライト膜
33 表面層
121 小空隙
122 大空隙
S11~S12,S21~S27 ステップ
Claims (9)
- 分離膜複合体であって、
多孔質の支持体と、
前記支持体上に形成された分離膜と、
を備え、
前記分離膜は、小空隙を含み、
前記分離膜の表面積をSm、小空隙の1つ当たりの面積をSk、大空隙の1つ当たりの面積をSpと表すとき、
前記小空隙の存在率を表す小空隙指数Ik=(Σ(Sk 1.5))/(Sm 1.5)が、10x10-15以上であり、
前記大空隙の存在率を表す大空隙指数Ip=(Σ(Sp 2))/(Sm 2)が、200x10-22未満である。 - 請求項1に記載の分離膜複合体であって、
前記大空隙指数Ipが、100x10-22未満である。 - 請求項1または2に記載の分離膜複合体であって、
前記小空隙指数Ikが、20x10-15以上である。 - 請求項1ないし3のいずれか1つに記載の分離膜複合体であって、
50体積%のCO2および50体積%のCH4を含む25℃の混合ガスを供給した場合のCH4の透過速度について、供給側圧力が8.0MPaG、透過側圧力が0.0MPaGである場合の前記透過速度は、前記供給側圧力が0.3MPaG、前記透過側圧力が0.0MPaGである場合の前記透過速度の1.9倍未満である。 - 請求項1ないし4のいずれか1つに記載の分離膜複合体であって、
前記分離膜はゼオライト膜である。 - 請求項5に記載の分離膜複合体であって、
前記ゼオライト膜を構成するゼオライトの最大員環数は8以下である。 - 分離膜複合体の製造方法であって、
a)焼成により形成された多孔質の支持体を準備する工程と、
b)前記支持体を前処理温度にて加熱する工程と、
c)前記b)工程よりも後に、前記支持体を流体で洗浄する工程と、
d)前記c)工程よりも後に、前記支持体上に種結晶を付着させる工程と、
e)前記種結晶が付着した前記支持体を原料溶液に浸漬し、水熱合成により前記種結晶からゼオライトを成長させて前記支持体上に分離膜を形成する工程と、
を備え、
前記前処理温度は、400℃以上、かつ、前記a)工程における前記支持体の焼成温度の80%未満である。 - 分離方法であって、
a)請求項1ないし6のいずれか1つに記載の分離膜複合体を準備する工程と、
b)複数種類のガスまたは液体を含む混合物質を前記分離膜複合体に供給し、前記混合物質中の透過性が高い物質を、前記分離膜複合体を透過させることにより他の物質から分離する工程と、
を備える。 - 請求項8に記載の分離方法であって、
前記混合物質は、水素、ヘリウム、窒素、酸素、水、水蒸気、一酸化炭素、二酸化炭素、窒素酸化物、アンモニア、硫黄酸化物、硫化水素、フッ化硫黄、水銀、アルシン、シアン化水素、硫化カルボニル、C1~C8の炭化水素、有機酸、アルコール、メルカプタン類、エステル、エーテル、ケトンおよびアルデヒドのうち、1種類以上の物質を含む。
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2010158665A (ja) | 2008-12-10 | 2010-07-22 | Ngk Insulators Ltd | Ddr型ゼオライト膜配設体の製造方法 |
WO2014157701A1 (ja) | 2013-03-29 | 2014-10-02 | 日本碍子株式会社 | 酸素8員環ゼオライト膜、ゼオライト膜の製造方法、及び酸素8員環ゼオライト膜の評価方法 |
WO2016006564A1 (ja) | 2014-07-10 | 2016-01-14 | 日立造船株式会社 | ゼオライト膜、その製造方法およびこれを用いた分離方法 |
JP2019181456A (ja) | 2018-03-30 | 2019-10-24 | 日本碍子株式会社 | ゼオライト膜複合体、ゼオライト膜複合体の製造方法、および、分離方法 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010158665A (ja) | 2008-12-10 | 2010-07-22 | Ngk Insulators Ltd | Ddr型ゼオライト膜配設体の製造方法 |
WO2014157701A1 (ja) | 2013-03-29 | 2014-10-02 | 日本碍子株式会社 | 酸素8員環ゼオライト膜、ゼオライト膜の製造方法、及び酸素8員環ゼオライト膜の評価方法 |
WO2016006564A1 (ja) | 2014-07-10 | 2016-01-14 | 日立造船株式会社 | ゼオライト膜、その製造方法およびこれを用いた分離方法 |
JP2019181456A (ja) | 2018-03-30 | 2019-10-24 | 日本碍子株式会社 | ゼオライト膜複合体、ゼオライト膜複合体の製造方法、および、分離方法 |
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BR112022022775A2 (pt) | 2022-12-13 |
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