Water gas shift reaction and selective oxidation of CO in microreactors

Goerke, Oliver; Pfeifer, Peter; Schubert, K. R.

doi:10.1016/j.apcata.2003.11.036

Cited by 133 publications

(55 citation statements)

References 17 publications

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“…Recently monoliths have received attention as supports for PROX catalysts [1,[10][11][12]. The macrostructure of the support material ensures a low-pressure drop, whereas the thin catalytic coating ensures high efficiency and selectivity [10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…Proton exchange membrane fuel cells (PEMFC), which use high purity hydrogen as energy source, are becoming an increasingly attractive technology for power generation because of their high-energy conversion efficiency and nearly zero emission [1,2]. The conventional method of hydrogen production combines catalytic steam reforming with water gas shift reaction and the resulting streams contain approximately 50% H 2 , 15% CO 2 , 10% H 2 O, 25% N 2 , and 0.5-1% CO [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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CuO–CeO2/Al2O3 /FeCrAl monolithic catalysts prepared by sol-pyrolysis method for preferential oxidation of carbon monoxide

2007

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This work describes a new technique, sol-pyrolysis method, for depositing CuO-CeO 2 on FeCrAl honeycomb supports. The monolithic catalysts prepared by the method presented good adhesion stability in ultrasonic and thermal shock tests. The principle of the deposition and the role of the support were studied and analyzed by SEM, XRD, TG-DTA, TPR and XPS techniques. The results showed that the active components adhered to the support via three stages. High surface energy of the crystal nuclei and the interaction between the active components and the support promoted adhesion stability. Moreover, the presence of the support influenced distribution and interaction of the active components, but had no obvious effect on catalytic performance. The CuOCeO 2 /Al 2 O 3 /FeCrAl monolithic catalysts were applied for the preferential oxidation of carbon monoxide in rich-hydrogen gases and revealed high activity and good selectivity under the presence of 15%CO 2 and 10%H 2 O.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CuO–CeO2/Al2O3 /FeCrAl monolithic catalysts prepared by sol-pyrolysis method for preferential oxidation of carbon monoxide

2007

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“…Shorter space-time yields are enabled in microchannel systems due to a reduction of the transport limitation. Microchannel WGS systems were reported to have very short (less than 30 ms) residence times at temperatures between 250 and 300 °C [31]. …”

Section: Kinetic Behavior Of the Wgs Reaction In A Microchannel Reactmentioning

confidence: 99%

Water–Gas Shift Reaction over Ni/CeO2 Catalysts

et al. 2017

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This paper reports the results of a study of a water-gas shift reaction over nickel-ceria catalysts with different metal loading. Within this study, the overall CO conversion and observed kinetic behavior were investigated over the temperature range of 250-550 • C in different reactor configurations (fixed-bed and microchannel reactors). The quasi-steady state kinetics of the CO water-gas shift reaction was studied for fractions of Ni-containing cerium oxide catalysts in fixed-bed experiments at lab-scale level using a very dilute gas (1% CO + 1.8% H 2 O in He). A set of experiments with a microchannel reactor was performed using the feed composition (CO:H 2 O:H 2 :N 2 = 1:2:2:2), representing a product gas from methane partial oxidation. The results were interpreted using computational models. The kinetic parameters were determined by regression analysis, while mechanistic aspects were considered only briefly. Simulation of the WGS reaction in the microreactor was also carried out by using the COMSOL Multiphysics program.

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“…Argon gas was mixed with reactor exhaust gasses before flowing into gas analyzer to ensure accurate hydrogen production calculation. In contrast, Goerke et al (2004) developed a reactor for carbon monoxide (CO) reduction in hydrogen production for fuel cells. A HPLC pump fed the water used for reaction into a steel capillary.…”

Section: Gas Phase Reactormentioning

confidence: 99%

Lab-on-a-chip: a component view

2010

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Miniaturization is being increasingly applied to biological and chemical analysis processes. Lab-on-a-chip systems are direct creation of the advancement in the miniaturization of these processes. They offer a host of exciting applications in several areas including clinical diagnostics, food and environmental analysis, and drug discovery and delivery studies. This paper reviews labon-a-chip systems from their components perspective. It provides a categorization of the standard functional components found in lab-on-a-chip devices together with an overview of the latest trends and developments related to lab-on-a-chip technologies and their application in nanobiotechnology. The functional components include: injector, transporter, preparator, mixer, reactor, separator, detector, controller, and power supply. The components are represented by appropriate symbols allowing designers to present their lab-on-a-chip products in a standard manner. Definition and role of each functional component are included and complemented with examples of existing work. Through the approach presented in this paper, it is hoped that modularity and technology transfer in lab-on-achip systems can be further facilitated and their application in nanobiotechnology be expanded 1 Introduction

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Water gas shift reaction and selective oxidation of CO in microreactors

Cited by 133 publications

References 17 publications

CuO–CeO2/Al2O3 /FeCrAl monolithic catalysts prepared by sol-pyrolysis method for preferential oxidation of carbon monoxide

CuO–CeO2/Al2O3 /FeCrAl monolithic catalysts prepared by sol-pyrolysis method for preferential oxidation of carbon monoxide

Water–Gas Shift Reaction over Ni/CeO2 Catalysts

Lab-on-a-chip: a component view

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