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AssigneeNGK Insulators, Ltd.
InventorsKunio Nakayama, Kenji Suzuki, Manabu Yoshida, Kenji Yajima, Toshihiro Tomita
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A DDR type zeolite membrane formed on a substrate includes silica as a main component. The DDR type zeolite membrane separates at least one type of a gas component from a mixed gas containing at least two types of gases selected from a group consisting of carbon dioxide (CO2), hydrogen (H2), oxygen (O2), nitrogen (N2), methane (CH4), normal butane (n-C4H10), isobutane (i-C4H10), sulfur hexafluoride (SF6), ethane (C2H6), ethylene (C2H4), propane (C3H8), propylene (C3H6), carbon monoxide (CO), and nitrogen monoxide (NO). Each single gas permeance at room temperature and 100° C. are different, respectively, in order to separate at least one selected gas component from the mixed gas.
A DDR type zeolite membrane formed on a substrate, said membrane having a thickness of 0.1 to 50 μm and including a main component of silica, wherein each single gas permeance at room temperature and 100° C. are different, respectively, among at least two types of gases selected from the group consisting of carbon dioxide (CO2), hydrogen (H2), oxygen (O2), nitrogen (N2), methane (CH4), normal butane (n-C4H10), isobutane (i-C4H10), sulfur hexafluoride (SF6), ethane (C2H6), ethylene (C2H4), propane (C3H8), propylene (C3H6), carbon monoxide (CO), and nitrogen monoxide (NO).
A gas separation method for separating at least one type of gas component from a mixed gas containing at least two types of gas components selected from a group consisting of carbon dioxide (CO2), hydrogen (H2), oxygen (O2), nitrogen (N2), methane (CH4), normal butane (n-C4H10), isobutane (i-C4H10), sulfur hexafluoride (SF6), ethane (C2H6), ethylene (C2H4), propane (C3H8), propylene (C3H6), carbon monoxide (CO), and nitrogen monoxide (NO), by making said mixed gas components permeate through a DDR type zeolite membrane being formed as a membrane on a substrate and including a main component of silica, wherein each single gas permeance at room temperature and 100° C. are different, respectively, to separate said at least one type of gas component.
A gas separation apparatus comprising a DDR type zeolite membrane being formed as a membrane on a substrate and having silica as a main component, wherein said DDR type zeolite membrane separates at least one type of gas component from a mixed gas containing at least two types of gas components selected from the group consisting of carbon dioxide (CO2), hydrogen (H2), oxygen (O2), nitrogen (N2), methane (CH4), normal butane (n-C4H10), isobutane (i-C4H10), sulfur hexafluoride (SF6), ethane (C2H6), ethylene (C2H4), propane (C3H8), propylene (C3H6), carbon monoxide (CO), and nitrogen monoxide (NO), and wherein each single gas permeance at room temperature and 100° C. are different, respectively, in order to separate said at least one type of gas component from said mixed gas.
A DDR type zeolite membrane composite, comprising a porous substrate and a DDR type zeolite layer deposited within pores of the porous substrate and having a thickness 5 to 50 times of a mean pore diameter of the porous substrate, said DDR zeolite layer being composed of a DDR type zeolite having been disposed within pores of at least one surface of the porous substrate.
Dependencies are inferred from the claim text.