Hydrogen nexus in a sustainable energy future

Sartbaeva, Asel; Кузнецов, В. Л.; Wells, Stephen A.; Edwards, Peter P.

doi:10.1039/b810104n

Cited by 296 publications

(157 citation statements)

References 23 publications

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“…10.000 Wh for a liter of diesel). [2][3][4] One possible way to overcome these challenges is to store hydrogen chemically in an organic compound that is liquid under ambient conditions. Among the different concepts of chemical energy storage, the use of so-called liquid organic hydrogen carriers (LOHCs) is particularly attractive as no extra gas component is necessary (in contrast, e.g., to methanol a) C. Gleichweit and M. Amende contributed equally to this work.…”

Section: Introductionmentioning

confidence: 99%

Alkyl chain length-dependent surface reaction of dodecahydro-N-alkylcarbazoles on Pt model catalysts

Gleichweit

Amende

Bauer

et al. 2014

The Journal of Chemical Physics

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Articles you may be interested inPerformance and characteristics of a high pressure, high temperature capillary cell with facile construction for operando x-ray absorption spectroscopy Rev. Sci. Instrum. 85, 084105 (2014) The concept of liquid organic hydrogen carriers (LOHC) holds the potential for large scale chemical storage of hydrogen at ambient conditions. Herein, we compare the dehydrogenation and decomposition of three alkylated carbazole-based LOHCs, dodecahydro-N-ethylcarbazole (H 12 -NEC), dodecahydro-N-propylcarbazole (H 12 -NPC), and dodecahydro-N-butylcarbazole (H 12 -NBC), on Pt(111) and on Al 2 O 3 -supported Pt nanoparticles. We follow the thermal evolution of these systems quantitatively by in situ high-resolution X-ray photoelectron spectroscopy. We show that on Pt(111) the relevant reaction steps are not affected by the different alkyl substituents: for all LOHCs, stepwise dehydrogenation to NEC, NPC, and NBC is followed by cleavage of the C-N bond of the alkyl chain starting at 380-390 K. On Pt/Al 2 O 3 , we discern dealkylation on defect sites already at 350 K, and on ordered, (111)-like facets at 390 K. The dealkylation process at the defects is most pronounced for NEC and least pronounced for NBC. © 2014 AIP Publishing LLC.

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Section: Introductionmentioning

confidence: 99%

Alkyl chain length-dependent surface reaction of dodecahydro-N-alkylcarbazoles on Pt model catalysts

Gleichweit

Amende

Bauer

et al. 2014

The Journal of Chemical Physics

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“…In that context, for fast developing and industrialised economies, energy is on high demand and this calls for an uninterrupted, available and affordable energy supply which will stand the test of time. Achieving this level of sustainable energy security and economic performance with current technologies has yielded little or no result in terms of balancing CO 2 emission abatement and the economic growth (Sartbaeva et al, 2008). Therefore the use of affordable technology which will be readily available and can provide cheaper and cleaner source of energy can be adapted to meet these challenges.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Analysis of a Nano Structured Inorganic Ceramic Membrane for Carbon Capture Applications in Energy Security Challenges

Nwogu

Kajama²,

Dedekuma³

et al. 2014

EER

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Nanostructured hybrid materials have the solution to facilitate renewable energy to cover up for anticipated energy gap and related ecological problems. In this work the design of a nano structured ceramic membrane is carried out using ceramic nanoparticles for application in energy security challenges. However the innovation is that a membrane porous network is modified through its immersion in silica based solution. This process helps to pull the gas of interest towards the membrane in this case CO 2 and allows the other gases to pass through. However the development of this hybrid ceramic gas separation membrane in this study elaborates on the recovery of hydrogen from fuel reforming unit for use in fuel cell applications. A detailed production and purification of hydrogen in a fuel processor using the advanced ceramic membrane is presented. A gaseous mixture of hydrogen and carbon dioxide is produced following fuel on-board reforming. To enhance the efficiency of the fuel cell, a clean hydrogen using membranes with a high permeability and selectivity for H 2 over N 2 , CO 2 such that H 2 will permeate with high-purity. Accordingly, results obtained show an appreciable high flow rate of 5.045 l/min and 3.71 separation factor of hydrogen gas to CO 2 at relatively low pressure when compared to the other gases. Further confirmation of the dominance of Knudsen and surface flow mechanism in the entire experiments is also presented.

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“…It is inevitable for our human being to cut down the usage of fossil fuels and replace these nonrenewable resources with other clean, renewable energy. Hydrogen is regarded as an ideal energy carrier, which has several advantages including its high energy density, together with the environmental benign nature [1,2]. Recently, different methods have been developed and implemented to produce hydrogen [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Ca0.5Mg0.5Co2O4 Nanosheets Comprised of Nanoparticles, Synthesis, Characterization and their Catalytic Activity in the Hydrolysis of Ammonia Borane for Hydrogen Production

Li¹,

Feng²,

Liao³

et al. 2018

Proceedings of the 4th Annual International Conference on Material Engineering and Application (ICMEA 2017)

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Abstract-Catalytic hydrolytic reaction of ammonia borane (AB) is regarded as safe and efficient way to produce hydrogen. However, the development of heterogeneous catalysts with both high catalytic performance and low cost for this hydrolytic reaction is still a great challenge. In this work, we have developed a novel catalyst for the hydrolysis of ammonia borane, Ca 0.5 Mg 0.5 Co 2 O 4 nanosheets composed of nanoparticles, which was characterized by X-ray powder diffractometer, field emission scanning electron microscope, transmission electron microscope, and volumetric analyzer. In the AB hydrolysis, the hydrogen production rate will increase as the increase the NaOH dosage. At NaOH dosage of 1.6 g, the turnover frequency is 4.8 mol hydrogen min -1 mol cat -1 . It is also found that a high catalyst dosage and a high reaction temperature are favorable for the fast hydrogen release from AB solution.

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Hydrogen nexus in a sustainable energy future

Cited by 296 publications

References 23 publications

Alkyl chain length-dependent surface reaction of dodecahydro-N-alkylcarbazoles on Pt model catalysts

Alkyl chain length-dependent surface reaction of dodecahydro-N-alkylcarbazoles on Pt model catalysts

An Experimental Analysis of a Nano Structured Inorganic Ceramic Membrane for Carbon Capture Applications in Energy Security Challenges

Ca0.5Mg0.5Co2O4 Nanosheets Comprised of Nanoparticles, Synthesis, Characterization and their Catalytic Activity in the Hydrolysis of Ammonia Borane for Hydrogen Production

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