Production of high purity hydrogen by ethanol steam reforming in membrane reactor

Mironova, E. Yu.; Ермилова, М. М.; Орехова, Н. В.; Muraviev, Dmitri; Yaroslavtsev, A. B.

doi:10.1016/j.cattod.2014.01.014

Cited by 61 publications

(11 citation statements)

References 29 publications

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“…For example, the absorption in the region of 1720-1750 cm −1 can be attributed to the >C=O-groups, as in the case of the detonation nanodiamonds [46]. IR spectra of such materials have been widely discussed in the literature [55][56][57][58][59].…”

Section: Resultsmentioning

confidence: 99%

Effect of Carbon Additives on the Electrochemical Performance of Li4Ti5O12/C Anodes

et al. 2020

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The Li4Ti5O12/C composites were prepared by a hydrothermal method with in situ carbon addition. The influence of the morphology and content of various carbon materials (conductive carbon black, mesoporous carbon G_157M, and carbon replicas) on the electrochemical performance of the Li4Ti5O12/C composites was investigated. The obtained composites were characterized using X-ray diffraction, scanning electron microsopy, high-resolution transmission electron microscopy, thermogravimetric analysis, Raman spectroscopy, and N2 sorption-desorption isotherms. Morphology of the Li4Ti5O12/C composites depends on the carbon matrix used, while both morphology and the amount of carbon material have a great impact on the rate capability and cycling stability of the obtained composites. At low current densities, the Li4Ti5O12/C composite with 5 wt.% G_157M exhibits the highest discharge capacity, while at high charge-discharge rates, the Li4Ti5O12/carbon black composites show the best electrochemical performance. Thus, at ~0.1C, 5C, and 18C rates, the discharge capacities of the obtained Li4Ti5O12/C composites are 175, 120, and 70 mAh/g for G_157M, 165, 126, and 78 mAh/g for carbon replicas, and 173, 128, and 93 mAh/g for carbon black. After 100 cycles, their capacity retention is no less than 95%, suggesting their promising application perspective.

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Section: Resultsmentioning

confidence: 99%

Effect of Carbon Additives on the Electrochemical Performance of Li4Ti5O12/C Anodes

et al. 2020

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“…The production of hydrogen from ethanol reforming using Pt-Ni and Pt-Ru as catalysts with a low content of the metals (0.3 wt. %) supported onto nanodiamonds produced by a detonation synthesis technique (DND) in a PBMR was recently reported by Mironova et al [ 40 ]. Defect-free Pd-Ru foils were used as hydrogen membrane.…”

Section: Membrane Reactors For Hydrogen Production and Separationmentioning

confidence: 99%

Recent Advances in Pd-Based Membranes for Membrane Reactors

et al. 2017

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Palladium-based membranes for hydrogen separation have been studied by several research groups during the last 40 years. Much effort has been dedicated to improving the hydrogen flux of these membranes employing different alloys, supports, deposition/production techniques, etc. High flux and cheap membranes, yet stable at different operating conditions are required for their exploitation at industrial scale. The integration of membranes in multifunctional reactors (membrane reactors) poses additional demands on the membranes as interactions at different levels between the catalyst and the membrane surface can occur. Particularly, when employing the membranes in fluidized bed reactors, the selective layer should be resistant to or protected against erosion. In this review we will also describe a novel kind of membranes, the pore-filled type membranes prepared by Pacheco Tanaka and coworkers that represent a possible solution to integrate thin selective membranes into membrane reactors while protecting the selective layer. This work is focused on recent advances on metallic supports, materials used as an intermetallic diffusion layer when metallic supports are used and the most recent advances on Pd-based composite membranes. Particular attention is paid to improvements on sulfur resistance of Pd based membranes, resistance to hydrogen embrittlement and stability at high temperature.

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“…The renewable fermentation of the biomass synthetic route, the advantage in storage facilities, handling, and the transport safety, as well as the feasible H 2 production applying in the fuel cell makes ESR more efficient in the application in the direct biorenewable resources and the fuel cell as the storage medium. , The strongly endothermic ESR calls for a continuous heat supply at low temperature in production. The noble metal catalysts (Pt, − Pd, , Rh, − Ir, − and Ru) have shown catalytic activity toward ESR reaction. However, the low H 2 yield at low temperature, high methane selectivity, and high cost has limited the application of noble metal based catalysts.…”

Section: Introductionmentioning

confidence: 99%

Reaction Mechanism of Ethanol on Model Cobalt Catalysts: DFT Calculations

Chen

Wang

2016

J. Phys. Chem. C

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In the present work, the density functional theory calculations analysis are performed to study the reaction mechanisms and catalytic activity of ethanol reactions over Co 0 , Co 2+ , and Co 3+ sites. Adsorption situations and the reaction cycles for ethanol reactions on cobalt catalysts were clarified. The mechanisms include the dehydrogenation steps of ethanol and the C−C cleavage step. The present calculation results show that the mechanism of ethanol reaction on Co 0 site is CH 3 CH 2 OH → CH 3 CH 2 O → CH 3 CHO → CH 3 CO → CH 3 +CO, and the final products are CO and H 2 . H 2 is formed by the combination of adsorbed H species. On Co 2+ site, the mechanism is CH 3 CH 2 OH → CH 3 CH 2 O → CH 3 CHO, and the main final product is CH 3 CHO species. On Co 3+ site, the mechanism is CH 3 CH 2 OH → CH 3 CH 2 O → CH 3 CHO → CH 2 CHO → CH 2 CO → CHCO → CCO → COCO → CO → CO 2 , and the final products are CO 2 and H 2 O. The rate-limiting step on Co 0 , Co 2+ , and Co 3+ sites is the form of CH 3 CHO species. The possible reasons for the different catalytic activities may be the following two facts: First, Co 3+ sites density in Co 3 O 4 (110)-A is larger than that of Co 2+ and tends to break the C−C bond to produce CO; second, Co 3+ binds more oxygen atoms that the further oxidation of ethanol requires, which leads to the full oxidation of ethanol to CO 2 on Co 3+ sites. The present result may help people to design an ESR (ethanol stream reaction) catalyst by controlling its oxidation state, and the catalyst with modest oxidation state is benefit for the H 2 formation. The proper catalyst should own the ability to break C−C to form CO but avoid the full oxidation of CO into CO 2 which is needed to react with H 2 O in the water−gas shift reaction generating CO 2 and H 2 .

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Production of high purity hydrogen by ethanol steam reforming in membrane reactor

Cited by 61 publications

References 29 publications

Effect of Carbon Additives on the Electrochemical Performance of Li4Ti5O12/C Anodes

Effect of Carbon Additives on the Electrochemical Performance of Li4Ti5O12/C Anodes

Recent Advances in Pd-Based Membranes for Membrane Reactors

Reaction Mechanism of Ethanol on Model Cobalt Catalysts: DFT Calculations

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