Methane conversion to syngas in a palladium membrane reactor

Gałuszka, Jan; Pandey, Ramakant; Ahmed, Shakeel

doi:10.1016/s0920-5861(98)00329-0

Cited by 107 publications

(53 citation statements)

References 14 publications

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“…Membrane systems operated at lower temperature show carbon formation even leading to membrane destruction [15,16]. The nickel membranes also showed catalytic properties in the first experiments, which could reduce the amount of catalyst needed in the process.…”

Section: Resultsmentioning

confidence: 97%

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Dry Reforming of Methane Using a Nickel Membrane Reactor

2017

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Dry reforming is a very interesting process for synthesis gas generation from CH 4 and CO 2 but suffers from low hydrogen yields due to the reverse water-gas shift reaction (WGS). For this reason, membranes are often used for hydrogen separation, which in turn leads to coke formation at the process temperatures suitable for the membranes. To avoid these problems, this work shows the possibility of using nickel self-supported membranes for hydrogen separation at a temperature of 800 • C. The higher temperature effectively suppresses coke formation. The paper features the analysis of the dry reforming reaction in a nickel membrane reactor without additional catalyst. The measurement campaign targeted coke formation and conversion of the methane feedstock. The nickel approximately 50% without hydrogen separation. The hydrogen removal led to an increase in methane conversion to 60-90%.

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Section: Resultsmentioning

confidence: 97%

“…These reactors suffer from limited process temperatures causing high carbon formation rates. Many of the recent publications concentrate on this topic [6,16,17]. The higher process temperature in the described experiments could significantly reduce coke formation.…”

Section: Comparison With Literature Resultsmentioning

confidence: 98%

Dry Reforming of Methane Using a Nickel Membrane Reactor

2017

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“…Due to the high surface area/volume ratios achieved by hollow fibre configurations, ceramic hollow fibre membrane performance may greatly exceed that of other membrane systems. The ability to operate at high temperatures and pressures, and in corrosive environments, allows ceramic membranes to be used in a variety of applications including filtration for corrosive fluids [3], high temperature membrane reactors [4][5][6], solid oxide fuel cells [7] and membrane contactors [8] as well as robust membrane supports [9]. In particular, the solvent resistant nature of ceramic membrane materials makes them extremely useful for solvent filtration purposes as they can be used with a variety of both polar and apolar solvents.…”

Section: Introductionmentioning

confidence: 99%

A morphological study of ceramic hollow fibre membranes

Kingsbury

2009

Journal of Membrane Science

337

169

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Morphologies of ceramic hollow fibre membranes prepared from suspensions of Al 2 O 3 , NMP (Nmethyl-2-pyrrolidone) and polyethersulfone (PESf) using a dry-wet spinning/sintering process have been studied experimentally. The results indicate that two types of membrane morphologies, i.e. fingerlike and sponge-like structures can be expected. It is believed that finger-like void formation in asymmetric ceramic membranes is initiated by hydrodynamically unstable viscous fingering developed when a less viscous fluid (non-solvent) is in contact with a higher viscosity fluid (ceramic suspension containing invertible polymer binder). Finger-like void growth occurs only below a critical suspension viscosity, above which a sponge-like structure is observed over the entire hollow fibre cross section.The effects of the air-gap, viscosity and non-solvent concentration on fibre morphology have been studied and it has been determined that viscosity is the dominating factor for ceramic systems.

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“…Such a high temperature causes some demerits, including the expensive tubular reformer made of high alloy nickel-chromium steel, irreversible carbon formation in the reactor, and large energy consumption. In order to reduce the reaction temperature, some membrane reactors have been proposed [2][3][4][5][6][7][8]. In the reactor, hydrogen is usually separated from the reaction mixture by a palladium-based membrane and the separation of hydrogen significantly increases the equilibrium conversion of methane.…”

Section: Introductionmentioning

confidence: 99%