Durability of PSS-supported Pd-membranes under mixed gas and water–gas shift conditions

Augustine, Alexander S.; Mardilovich, Ivan P.; Kazantzis, Nikolaos; Hua, Yi

doi:10.1016/j.memsci.2012.05.001

Cited by 38 publications

(19 citation statements)

References 31 publications

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“…Composite asymmetric membranes were synthesized, as previously described [6], on porous stainless steel (PSS) tubular supports 316L [15] from MOTT Metallurgical with an outer diameter of 0.025 m and a length of 0.254 m. The total porous surface area of the membrane was 200 cm 2 . One end was welded to a 0.076 m long 316L nonporous tube capped at one end and to a 0.356 m long nonporous tube on the other end.…”

Section: Membrane Preparationmentioning

confidence: 99%

A comprehensive performance assessment study of pilot-scale Pd and Pd/alloy membranes under extended coal-derived syngas atmosphere testing

Mardilovich

Castro-Dominguez

Kazantzis

et al. 2015

International Journal of Hydrogen Energy

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The present study encompasses the results of a comprehensive performance assessment of different pilot-scale Pd/Alloy composite asymmetric membranes under long-term coal-derived syngas atmosphere testing. The membranes were developed and tested first at the CIMS-WPI laboratory under pure H 2 and later at NCCC under a mixture of N 2 /H 2 and H 2 enriched syngas coming from a TRIG TM gasification system. Thirteen membranes were examined for 4275 h and classified in four types: Pd, Pd/Au, Pd/Pt and Pd/Au/Pt membranes. Their respective H 2 permeance and purity profiles, permeance difference under pure hydrogen and syngas conditions as well as stability of operation were assessed. The membranes showed good stability in syngas although exhibiting an initial drop in permeance when compared to that under pure hydrogen. Pure Pd membranes displayed the highest permeability, but showed pinholes after being exposed to syngas. Pd/Pt membranes showed a reduced permeance drop under syngas conditions, indicating sulfur resistance properties. Furthermore, Pd/Au/Pt membranes, presented for the first time in the literature, displayed stable permeance and purity profile. The inhibition of the initial permeance drop and the long-term operation of these ternary membranes were demonstrated. Finally, Pd/Au membranes were shown to display the most stable permeance and purity characteristics. In this case, the initial permeance drop was significantly reduced, exhibiting the lowest decline amongst all cases considered. It is hypothesized that Au may act as a patch paste blocking defects on the Pd layer.

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Section: Membrane Preparationmentioning

confidence: 99%

A comprehensive performance assessment study of pilot-scale Pd and Pd/alloy membranes under extended coal-derived syngas atmosphere testing

Mardilovich

Castro-Dominguez

Kazantzis

et al. 2015

International Journal of Hydrogen Energy

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“…M1 maintained a

χ_{CO}

of ∼72% and

R_{{normalH}_{2}}

of ∼6% while M2 had steady values of ∼71% and ∼4%. For other reported hydrogen‐selective membranes, Pd alloy membranes have been evaluated to be good stability in HT‐WGS reaction but insufficient in high CO content or trace H 2 S atmospheres . Silica membranes have exhibited stable H 2 /CO 2 separation performance at HT but there has been few result about their long‐term continuous reaction stability under HT‐WGS system containing high content of vapor .…”

Section: Resultsmentioning

confidence: 99%

Pure H₂ production through hollow fiber hydrogen‐selective MFI zeolite membranes using steam as sweep gas

Zhang

Sun

2015

AIChE Journal

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Hollow fiber MFI zeolite membranes were modified by catalytic cracking deposition of methyldiethoxysilane to enhance their H 2 /CO 2 separation performance and further used in high temperature water gas shift membrane reactor. Steam was used as the sweep gas in the MR for the production of pure H 2 . Extensive investigations were conducted on MR performance by variations of temperature, feed pressure, sweep steam flow rate, and steam-to-CO ratio. CO conversion was obviously enhanced in the MR as compared with conventional packed-bed reactor (PBR) due to the coupled effects of H 2 removal as well as counter-diffusion of sweep steam. Significant increment in CO conversion for MR vs. PBR was obtained at relatively low temperature and steam-to-CO ratio. A high H 2 permeate purity of 98.2% could be achieved in the MR swept by steam. Moreover, the MR exhibited an excellent long-term operating stability for 100 h in despite of the membrane quality.

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“…Figure 5.4 shows that depending on the membrane operation temperature, different membranes have different applications for H 2 production in coal gasification process (Kaldis, Skodras, & Sakellaropoulos, 2004;Li & Fan, 2008;Smart et al, 2010). The membrane used in this process usually tolerates operation temperatures in the range of 280e600 C. Typical membranes used in this process for H 2 production in coal gasification include microporous zeolite membranes (Wang, Dong, & Lin, 2014; silica membranes (Brunetti, Barbieri, Drioli, Granato, & Lee, 2007Giessler, Jordan, Costa, & Lu, 2003), carbon molecular membranes, and Pd-based membranes (Augustine, Mardilovich, Kazantzis, & Ma, 2012;Koc, Kazantzis, & Ma, 2011;Liguoria et al, 2012). Syngas produced from a coal gasifier is initially removed with particulates and sulfur, and then fed to a membrane reactor for WGS reaction to produce H 2 and CO 2 .…”

Section: Advantages Of Membrane Reactorsmentioning

confidence: 99%

Membrane reactors for hydrogen production from coal

Dong

Lin

2015

Membrane Reactors for Energy Applications and Basic Chemical Production

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Durability of PSS-supported Pd-membranes under mixed gas and water–gas shift conditions

Cited by 38 publications

References 31 publications

A comprehensive performance assessment study of pilot-scale Pd and Pd/alloy membranes under extended coal-derived syngas atmosphere testing

A comprehensive performance assessment study of pilot-scale Pd and Pd/alloy membranes under extended coal-derived syngas atmosphere testing

Pure H₂ production through hollow fiber hydrogen‐selective MFI zeolite membranes using steam as sweep gas

Membrane reactors for hydrogen production from coal

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Durability of PSS-supported Pd-membranes under mixed gas and water–gas shift conditions

Cited by 38 publications

References 31 publications

A comprehensive performance assessment study of pilot-scale Pd and Pd/alloy membranes under extended coal-derived syngas atmosphere testing

A comprehensive performance assessment study of pilot-scale Pd and Pd/alloy membranes under extended coal-derived syngas atmosphere testing

Pure H2 production through hollow fiber hydrogen‐selective MFI zeolite membranes using steam as sweep gas

Membrane reactors for hydrogen production from coal

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Product

Resources

About

Pure H₂ production through hollow fiber hydrogen‐selective MFI zeolite membranes using steam as sweep gas