Potential importance of hydrogen as a future solution to environmental and transportation problems

Balat, Mustafa

doi:10.1016/j.ijhydene.2008.05.047

Cited by 1,172 publications

(426 citation statements)

References 111 publications

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“…Volumetric and gravimetric hydrogen density of hydrogen storage materials. 9 Hydrogen spillover can occur between a metal and a metal oxide 18 or between two metals 26 and is believed to occur through three principal steps (Scheme 2): (1) Dissociative chemisorption of hydrogen gas on a metal surface, (2) migration of hydrogen atoms to the metal-substrate interface, (3) and diffusion of hydrogen atoms across the metal-substrate interface. 27 Often times, the rate-limiting step and key species in hydrogen spillover are surface diffusion of hydrogen atoms across the metal-substrate interface, or more generally the activator-acceptor interface ( Figure 4).…”

Section: Bimetallic Nanocomposites For Efficient Hydrogen Storagementioning

confidence: 99%

“…It is estimated that 14% of worldwide greenhouse gas emissions and 19% of CO 2 emissions can be attributed to motor vehicles and the percentage is expected to increase with the quick economic growth of developing countries. 1 Hydrogen (H 2 ) has been proposed as an alternative fuel, especially for use in the transportation sector, because its combustion produces water and the most energy released by any fuel on a mass basis (Scheme 1). 2 Scheme 1.…”

Section: Chapter 1 Introduction Motivation: the Hydrogen Economymentioning

confidence: 99%

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Templated synthesis of nickel nanoparticles: Toward heterostructured nanocomposites for efficient hydrogen storage

Nelson

2013

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Section: Bimetallic Nanocomposites For Efficient Hydrogen Storagementioning

confidence: 99%

Section: Chapter 1 Introduction Motivation: the Hydrogen Economymentioning

confidence: 99%

Templated synthesis of nickel nanoparticles: Toward heterostructured nanocomposites for efficient hydrogen storage

Nelson

2013

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“…Hydrogen (H 2 ) is considered as a suitable alternative source of energy owing to its regenerative, carbon neutral and high energy yielding (122 kJ/g) property (Kapdan and Kargi 2006;Brown et al 2007;Balat 2008;Das and Veziroglu 2008;Wang and Wan 2009;Suleman et al 2015). However, presently about 96% of H 2 are produced from fossil fuels, which are again energy intensive, economically and environmentally not feasible (Momirlan and Veziroglu 2002;Nath and Das 2004;Ewan and Allen 2005;Mohanty et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Biohydrogen production by locally isolated facultative bacterial species using the biomass of Eichhornia crassipes: effect of acid and alkali treatment

Mechery¹,

Biji²,

Thomas³

et al. 2017

Energ. Ecol. Environ.

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Hydrogen (H 2 ) produced from biological methods is a potential option to meet the growing clean energy needs. The present study aimed to produce biohydrogen by dark fermentation from nuisance aquatic weed, Eichhornia crassipes, using facultative anaerobic bacteria. A total of 12 bacterial strains were isolated from different wastewater sources and were screened for the potential of H 2 production using glucose as carbon source. Ten strains showed the H 2 -producing potential and were identified up to the generic level by biochemical tests. Two strains with higher H 2 production were sequenced using PCR technique and identified as Proteus mirabilis and Pseudomonas aeruginosa and selected for the studies with E. crassipes as the substrate. It was found that P. aeruginosa could produce 19.54 ± 0.03% of H 2 from 2% acid (H 2 SO 4 ) treated substrate which was comparatively higher than that of 4 and 8% treatments. P. mirabilis also yielded better results of 5.42 ± 0.02% H 2 f or 2% acid (H 2 SO 4 ) treated substrate than 4 and 8% treatments. In total, 33.52 ± 0.04% of H 2 was produced by P. aeruginosa for the substrate treated with 2% alkali (NaOH). It was noted that with respect to P. mirabilis 4% alkali treated substrate yielded a higher percentage of H 2 (20.23 ± 0.03%) compared to the other two concentrations. The results indicate that alkali treated substrate produced comparatively higher amount of H 2 than that of acid treated substrates. Regarding efficiency, P. aeruginosa was found to be more competent than P. mirabilis.

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“…Development of efficient and low cost hydrogen production technologies is an urgent task due to the increased demand of clean energy generation [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. At present more than 50 million tons of hydrogen are produced annually worldwide and much of this hydrogen is used in the chemical and refinery industries [15].…”

Section: Introductionmentioning

confidence: 99%

Application of POSS Nanotechnology for Preparation of Efficient Ni Catalysts for Hydrogen Production

Исмагилов

Матус

Kuznetsov

et al. 2017

Eurasian Chem. Tech. J.

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POSS (polyhedral oligomeric silsesquioxanes) nanotechnology was applied for preparation of efficient Ni catalysts for hydrogen production through autothermal reforming of methane (ATR of CH 4 ). The novel metal-POSS precursor [Nickel (II) -HeptaisobutylPOSS (C 4 H 9 ) 7 Si 7 O 9 (OH)O 2 Ni] of Ni nanoparticles was introduced into Ce 0.5 Zr 0.5 O 2 support with following calcination and reduction stages of activation. The peculiarity of the genesis of Ni/SiO 2 /Ce 0.5 Zr 0.5 O 2 nanomaterials and their characteristics versus deposition mode were studied by X-ray fluorescence spectroscopy, thermal analysis, N 2 adsorption, X-ray diffraction, high-resolution transmission electron microscopy and H 2 temperature-programmed reduction. The two kinds of supported Ni-containing particles were observed: highly dispersed Ni forms (1-2 nm) and large Ni-containing particles (up to 50-100 nm in size). It was demonstrated that the textural, structural, red-ox and, consequently, catalytic properties of ex-Ni-POSS catalysts depend on the deposition mode. The increase of a portion of difficultly reduced Ni 2+ species is found upon application of intermediate calcination during Ni-POSS deposition that has detrimental effect on the activity of catalyst in ATR of CH 4 . The Ni/SiO 2 /Ce 0.5 Zr 0.5 O 2 catalyst prepared by one-step Ni-POSS deposition exhibits the highest H 2 yield -80% at T = 800 °C.

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Potential importance of hydrogen as a future solution to environmental and transportation problems

Cited by 1,172 publications

References 111 publications

Templated synthesis of nickel nanoparticles: Toward heterostructured nanocomposites for efficient hydrogen storage

Templated synthesis of nickel nanoparticles: Toward heterostructured nanocomposites for efficient hydrogen storage

Biohydrogen production by locally isolated facultative bacterial species using the biomass of Eichhornia crassipes: effect of acid and alkali treatment

Application of POSS Nanotechnology for Preparation of Efficient Ni Catalysts for Hydrogen Production

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