An integrated purification and production of hydrogen with a palladium membrane-catalytic reactor

Lin, Yu-Ming; Lee, Guo-Lin; Rei, Min-Hon

doi:10.1016/s0920-5861(98)00208-9

Cited by 92 publications

(36 citation statements)

References 17 publications

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“…Reaction on Cu/ZnO catalyst at 573 K gave a higher hydrogen yield in the membrane reactor than in the conventional reactor. Therefore, the membrane reactor is also effective for steam reforming of methanol on Cu/ZnO catalyst, as previously reported 4) . The membrane reactor promoted hydrogen production on Ni/Al2O3 catalyst at all temperatures tested as shown in Fig.…”

Section: Steam Reforming Of Methanol 2 1 Relationship Between Hysupporting

confidence: 69%

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Steam Reforming of Methanol on Ni/Al2O3 Catalyst in a Pd-membrane Reactor

Kikuchi

Kawabe

Matsukata

2003

J. Jpn. Petrol. Inst.

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The application of the membrane reactor to steam reforming of methanol was studied as a hydrogen producing reaction. The activities, stabilities and selectivities of Cu/ZnO, Ni/Al2O3 and Ru/Al2O3 catalysts were tested using a conventional fixed-bed flow reactor. Ni/Al2O3 catalyst showed the most stable activity at 723 K but relatively low hydrogen yield because of methanation. However, the hydrogen-permeable membrane reactor suppressed methanation and hydrogen yield was enhanced compared with the conventional reactor. The membrane reactor was more effective at higher temperatures and higher W/F.

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Section: Steam Reforming Of Methanol 2 1 Relationship Between Hysupporting

confidence: 69%

“…Steam reforming of methanol on a Cubased catalyst is promoted by use of a Pd-membrane reactor 4) . The effect of the membrane is to increase the driving force of the reaction by suppressing the reverse reaction (kinetic effect).…”

Section: Introductionmentioning

confidence: 99%

Steam Reforming of Methanol on Ni/Al2O3 Catalyst in a Pd-membrane Reactor

Kikuchi

Kawabe

Matsukata

2003

J. Jpn. Petrol. Inst.

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“…The sol-gel method, however, suffers from poor reproducibility. A variety of synthetic methods have been reported in addition to those already listed, 44,45 including electroless plating, 10,[45][46][47][48][49] where films exhibit high permeances for long operational times while retaining H 2 /N 2 selectivities on the order of 1000.…”

Section: Alloys and Metalsmentioning

confidence: 99%

Membranes for Hydrogen Purification: An Important Step toward a Hydrogen-Based Economy

Nenoff¹,

Spontak²,

Aberg³

2006

MRS Bull.

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Production of pure molecular hydrogen is essential to the realization of the proposed “hydrogen economy” that could ultimately provide hydrogen as a clean, renewable source of energy; eliminate the industrialized world's dependence on petroleum; and reduce the generation of greenhouse gases linked to global warming. A crucial step in obtaining pure hydrogen is separating it from other gaseous compounds—mainly CO2—that often accompany hydrogen in industrial chemical reactions. Advanced membrane technology may prove to be the key to the successful, economical production of molecular hydrogen.Size-sieving glassy polymer membranes can separate H2 on the basis of its small size. Alternatively, reverse-selective rubbery polymers can expedite the passage and, hence, removal of CO2 due to its relatively high solubility in such membranes alone or in conjunction with dissociative chemical reactions. Transition-metal membranes and their alloys can adsorb H2 molecules, dissociate the molecules into H atoms for transport through interstitial sites, and subsequently recombine the H atoms to form molecular H2 again on the opposite membrane side. Microporous amorphous silica and zeolite membranes comprising thin films on a multilayer porous support exhibit good sorption selectivity and high diffusion mobilities for H2, leading to high H2 fluxes. Finally, carbon-based membranes, including carbon nanotubes, may be viable for H2 separation on the basis of selective surface flow and molecular sieving. A wide variety of materials challenges exist in hydrogen purification, and the objective of this issue of MRS Bulletin is to address those challenges and their potential solutions from basic principles.

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“…Some investigations also indicate that Pd/Ag membranes are more tolerant to oxygen [4]. The composite membranes exhibit high chemical and thermal stability as well as good adhesion with the adjacent layer [3,6,10,14,15].…”

Section: Introductionmentioning

confidence: 99%

Microfabricated Hydrogen Sensitive Membranes

et al. 2008

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Thin, defect-free palladium, palladium/copper and palladium/silver hydrogen absorbing membranes were microfabricated. A dual sputtering technique was used to deposit the palladium alloy membranes of only 1 lm thickness on a nonporous silicon substrate. Advanced silicon etching (ASE) was applied on the backside to create a mechanically stable support structure for the thin films. Performance evaluation was carried out for different gases in a temperature range of 20°C to 298°C at a constant differential pressure of 110 kPa at the two sides of the membrane. The composite membranes show an excellent permeation rate of hydrogen, which appears to be 0.05 Pa m 3 s -1 and 0.01 · 10 -3 Pa m 3 s -1 at 20°C for the microfabricated 23 % silver and the 53 % copper composite membranes, respectively. The selectivity to hydrogen over a gas mixture containing, in addition to hydrogen, carbon monoxide, carbon dioxide and nitrogen was measured. The mass spectrometer did not detect any CO 2 or CO, showing that the membrane is completely hydrogen selective. The microfabricated membranes exhibit both high mechanical strength (they easily withstand pressures up to 4 bar) and high thermal stability (up to 650°C).

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An integrated purification and production of hydrogen with a palladium membrane-catalytic reactor

Cited by 92 publications

References 17 publications

Steam Reforming of Methanol on Ni/Al<SUB>2</SUB>O<SUB>3</SUB> Catalyst in a Pd-membrane Reactor

Steam Reforming of Methanol on Ni/Al<SUB>2</SUB>O<SUB>3</SUB> Catalyst in a Pd-membrane Reactor

Membranes for Hydrogen Purification: An Important Step toward a Hydrogen-Based Economy

Microfabricated Hydrogen Sensitive Membranes

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