Membranes for hydrogen production with CO2 capture

Pex, P.P.A.C.; Delft, Y.C. van; Correia, L.A.; Veen, H.M. van; Jansen, D.; Dijkstra, J.W.

doi:10.1016/b978-008044704-9/50377-3

Cited by 3 publications

(2 citation statements)

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“…Here, the CO 2 produced is captured prior to combustion, while transferring the energy content of the fuel to hydrogen. Various precombustion routes for electricity production have been investigated, using a membrane reactor , or the sorption-enhanced reaction process (SERP). , The relevant reactions are for water−gas shift, and in addition if steam reforming is included. Conventional steam reforming of methane is performed at high temperatures, typically between 850 and 950 °C, and 80−90% of the methane is converted to hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Hydrotalcite as CO₂ Sorbent for Sorption-Enhanced Steam Reforming of Methane

Reijers

Valster-Schiermeier

Cobden

et al. 2005

Ind. Eng. Chem. Res.

196

138

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Sorption-enhanced reforming of methane is an attractive option for the combined production of electricity and capture of CO2. In this process, the steam-reforming catalyst is mixed with a CO2 sorbent. During the reaction, CO2 is adsorbed, leading to an increase of the hydrogen production rate. Once the sorbent is saturated, it must be regenerated using purge gas, usually steam. The amount of steam needed for CO2 removal from the saturated sorbent determines the system efficiency of the process to a large extent. In this paper, several potassium-promoted hydrotalcite samples, both obtained commercially and prepared in-house, are tested for their suitability as a CO2 sorbent for sorption-enhanced reforming of methane. In particular, the purge gas to adsorbed CO2 ratio is determined under various operation conditions. It is shown that this ratio is still too large under the investigated conditions. Mixed with steam-reforming catalyst the hydrotalcite sorbent can adsorb sufficient CO2 to enhance the CH4 conversion to almost 100%.

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Section: Introductionmentioning

confidence: 99%

Hydrotalcite as CO₂ Sorbent for Sorption-Enhanced Steam Reforming of Methane

Reijers

Valster-Schiermeier

Cobden

et al. 2005

Ind. Eng. Chem. Res.

196

138

View full text Add to dashboard Cite

show abstract

“…Whether concentration polarisation will occur with increased permeability was investigated numerically. Simulation results where the membrane permeability was increased with a factor of 2 and 4, corresponding to H 2 fluxes that may be achieved within a couple of years based on present H 2 membrane research (Pex et al, 2004) are shown in Figs. 14 and 15.…”

Section: Effect Of Membrane Fluxmentioning

confidence: 99%