Hydrogen production from renewable sources: biomass and photocatalytic opportunities

Navarro, R.M.; Sánchez-Sánchez, M.C.; Álvarez-Galván, M. Consuelo; Valle, F. del; Fierro, J.L.G.

doi:10.1039/b808138g

Cited by 384 publications

(224 citation statements)

References 159 publications

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“…There would be a significant advantage if the hydrogen could be produced from a biomass-derived chemical since any CO2 formed in parallel would be considered as a product of a carbon-neutral or "green" process. Hydrogen can be obtained by the gasification of biomass or bio-oil at high temperatures using catalysis [3,4] but this route is not easily applied to mobile systems.…”

Section: Introductionmentioning

confidence: 99%

“…In the case of liquid phase decomposition of formic acid, Tedsree et al [10] have reported that unsupported Pd nanoparticles have higher initial activities in the decomposition of formic acid than do nanoparticles of Rh, Pt, Ru, Au and Ag; however, they found that a catalyst 4 consisting of Ag nanoparticles covered by a thin layer of Pd had the highest initial activity.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen production from formic acid vapour over a Pd/C catalyst promoted by potassium salts: Evidence for participation of buffer-like solution in the pores of the catalyst

Liu

Bulushev

Beloshapkin

et al. 2014

Applied Catalysis B: Environmental

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(D.A. Bulushev) 2 A B S T R A C T Doping a 1 wt.% Pd/C catalyst with alkali metal carbonates has a very significant promotional effect on its activity in hydrogen production from the decomposition of formic acid vapour (2 vol.%, 1 bar), potassium and caesium carbonates giving the largest effects. The K carbonate species present on the fresh catalysts react with formic acid to form formate ions, these being dissolved in a formic acid/water solution condensed in the pores of the support. The steadystate activities of the samples containing formate ions were 1-2 orders of magnitude greater than those of the unpromoted Pd/C and CO content was lower than 30 ppm. The activation energies for the reaction increased with doping from 66 to 88-99 kJ mol -1 , relatively independent of the cation of the dopant. Similar but lesser effects were found with unsupported Pd nanocrystals doped with K carbonate. The rate-determining step for the promoted samples appears to be the decomposition of formate ions on the Pd surface.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrogen production from formic acid vapour over a Pd/C catalyst promoted by potassium salts: Evidence for participation of buffer-like solution in the pores of the catalyst

Liu

Bulushev

Beloshapkin

et al. 2014

Applied Catalysis B: Environmental

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“…Pyrolysis is the thermal decomposition of solid biomass at high temperature and pressure (Navarro et al, 2009). In this study, low temperature due to high activity of Co nano particles was used.…”

Section: Resultsmentioning

confidence: 99%

“…Gasification and pyrolysis is the thermal decomposition of solid biomass at a temperature of 650-800 K at 1-5 bars in the absence of air to yield liquid extract, solid charcoal and gaseous compounds (Navarro, et al, 2009). On gasification the quantity of liquid extract from the tea source was about 60% depending upon type of tea, quantity of milk and sugar.…”

Section: Manual4/milkchemistryhtm#topofpage)mentioning

confidence: 99%

Nanobiotechnology for the production of biofuels from spent tea

Mahmood¹,

Hussain²

2010

Afr. J. Biotechnol.

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Bioenergy is the only alternative and cheap source of energy which can be made easily available to the world. The present experiment included three steps for the conversion of spent tea (Camellia sinensis) into biofuels. In the first step, spent tea was gasified using Co nano catalyst at 300°C and atmospheric pressure. Catalytic gasification of spent tea yielded 60% liquid extract, 28% fuel gases and 12% charcoal. Gaseous products contain 53.03% ethene, 37.18% methanol and 4.59% methane. In the second step of the experiment, liquid extract of spent tea obtained from gasification, on transesterification gave 40.79% ethyl ester (biodiesel). In the third step, Aspergillus niger's growth on spent tea produced 57.49% bioethanol. This study reports an interesting finding that spent tea (solid waste) could be used not only for the production of biodiesel and bioethanol but also hydrocarbon fuel gases. The world today is consuming several million tons of tea yearly. The present technology could be utilized to produce alternate energy.

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“…[12,[33][34][35][36][37][38][39] Direct production of hydrogen from sunlight in a single photocatalytic system represents an appealing alternative to photovoltaic electricity generation. It offers the opportunity to integrate energy capture, conversion, and storage functions in a single system by converting solar energy directly into fuels suitable for storage and use in residential, industrial, and transportation sectors, thus enabling to overcome the diffuse nature and intermittency of solar energy.…”

Section: Solar Energy Conversionmentioning

confidence: 99%

Functional Materials for Sustainable Energy Technologies: Four Case Studies

Кузнецов

Edwards

2010

ChemSusChem

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The critical topic of energy and the environment has rarely had such a high profile, nor have the associated materials challenges been more exciting. The subject of functional materials for sustainable energy technologies is demanding and recognized as a top priority in providing many of the key underpinning technological solutions for a sustainable energy future. Energy generation, consumption, storage, and supply security will continue to be major drivers for this subject. There exists, in particular, an urgent need for new functional materials for next‐generation energy conversion and storage systems. Many limitations on the performances and costs of these systems are mainly due to the materials′ intrinsic performance. We highlight four areas of activity where functional materials are already a significant element of world‐wide research efforts. These four areas are transparent conducting oxides, solar energy materials for converting solar radiation into electricity and chemical fuels, materials for thermoelectric energy conversion, and hydrogen storage materials. We outline recent advances in the development of these classes of energy materials, major factors limiting their intrinsic functional performance, and potential ways to overcome these limitations.

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Hydrogen production from renewable sources: biomass and photocatalytic opportunities

Cited by 384 publications

References 159 publications

Hydrogen production from formic acid vapour over a Pd/C catalyst promoted by potassium salts: Evidence for participation of buffer-like solution in the pores of the catalyst

Hydrogen production from formic acid vapour over a Pd/C catalyst promoted by potassium salts: Evidence for participation of buffer-like solution in the pores of the catalyst

Nanobiotechnology for the production of biofuels from spent tea

Functional Materials for Sustainable Energy Technologies: Four Case Studies

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