JP7212618B2 - 膜反応器用の高度な二重スキン膜 - Google Patents
膜反応器用の高度な二重スキン膜 Download PDFInfo
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- JP7212618B2 JP7212618B2 JP2019531252A JP2019531252A JP7212618B2 JP 7212618 B2 JP7212618 B2 JP 7212618B2 JP 2019531252 A JP2019531252 A JP 2019531252A JP 2019531252 A JP2019531252 A JP 2019531252A JP 7212618 B2 JP7212618 B2 JP 7212618B2
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- membrane
- hydrogen
- membranes
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- protective layer
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- 150000002431 hydrogen Chemical class 0.000 claims description 18
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
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- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- YJVFFLUZDVXJQI-UHFFFAOYSA-L palladium(ii) acetate Chemical compound [Pd+2].CC([O-])=O.CC([O-])=O YJVFFLUZDVXJQI-UHFFFAOYSA-L 0.000 description 1
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- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
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Description
(a)水素選択性Pd膜またはPd合金膜と、
(b)ジルコニア、イットリア安定化ジルコニア(YSZ)、γ/Al2O3、YSZ-γ/Al2O3、シリカ、チタニア、マグネシア、セリア、窒化物、および炭化ケイ素からなる群から選択される材料を含む多孔質保護層とを含むことを特徴とする水素透過膜装置が提供される。
式中、Jは水素流束、Peは透過率、tは選択層の厚さ、pH2はそれぞれ透過物側と被保持物側の水素分圧、そしてnは圧力指数である。
についての最良の適合条件は、(2分間400℃で空気中で活性化した後)0.783の圧力指数値nで見出された。Pd系膜については、律速段階がパラジウムのバルクを通る拡散である場合、圧力指数は0.5に等しくなければならない。決定されたn値は0.5からずれるので、これはメソ多孔質保護層(1~5nmの孔径)中のクヌーセン拡散および/または多孔質支持体(100nmの孔径)内の粘性流が全体の水素透過速度に及ぼす影響を示し得る。これら両方のケースが律速段階の場合には、n値は1になろう。さらに、薄膜における律速段階は、バルク拡散ではなく表面反応である。したがって、n値は0.5より大きい。
式中、Qは膜の透過度、Q0は前指数因子、Eaは活性化エネルギー、Rは一般ガス定数、Tは絶対温度である。この式の仮定の1つは、圧力指数nが温度によって変化しないということである。
Claims (1)
- 水素透過膜装置であって、
(a)孔径100nmの多孔質αアルミナ支持層と、
(b)前記多孔質αアルミナ支持層の上に直接配置され、1μmの厚さを有する水素選択性Pd95Ag5膜と、
(c)前記水素選択性Pd95Ag5膜の上に配置され、0.5μmの厚さを有する、50%イットリア安定化ジルコニア(YSZ)及び50%γ/Al2O3からなる材料の多孔質保護層とを含むことを特徴とする水素透過膜装置。
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US201662431733P | 2016-12-08 | 2016-12-08 | |
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PCT/EP2017/081835 WO2018104455A2 (en) | 2016-12-08 | 2017-12-07 | Advanced double skin membranes for membrane reactors |
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CN113041970B (zh) * | 2021-03-17 | 2021-11-26 | 南京理工大学 | 一种内置扰流结构催化膜式反应器 |
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JP2006095521A (ja) | 2004-09-06 | 2006-04-13 | National Institute Of Advanced Industrial & Technology | 複合膜、その製造方法及び水素分離膜 |
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JP2014073926A (ja) | 2012-10-03 | 2014-04-24 | Ngk Spark Plug Co Ltd | 保持部材及び水素製造装置 |
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CA2351325A1 (en) | 1998-12-02 | 2000-06-08 | Aleksander J. Franz | Integrated palladium-based micromembranes for hydrogen separation and hydrogenation/dehydrogenation reactions |
EP1342500A4 (en) * | 2000-12-05 | 2006-05-03 | Sumitomo Electric Industries | HYDROGEN PERMEABLE STRUCTURE |
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WO2011119469A1 (en) * | 2010-03-22 | 2011-09-29 | T3 Scientific Llc | Hydrogen selective protective coating, coated article and method |
KR101336768B1 (ko) * | 2011-07-22 | 2013-12-16 | 한국에너지기술연구원 | 수소 분리막 보호층 및 이의 코팅방법 |
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JP2006095521A (ja) | 2004-09-06 | 2006-04-13 | National Institute Of Advanced Industrial & Technology | 複合膜、その製造方法及び水素分離膜 |
US20080176060A1 (en) | 2006-08-14 | 2008-07-24 | University Of Houston System | Pd NANOPORE AND PALLADIUM ENCAPSULATED MEMBRANES |
JP2014073926A (ja) | 2012-10-03 | 2014-04-24 | Ngk Spark Plug Co Ltd | 保持部材及び水素製造装置 |
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WO2018104455A2 (en) | 2018-06-14 |
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