High-temperature solar chemistry for converting solar heat to chemical fuels

Kodama, Tetsuya

doi:10.1016/s0360-1285(03)00059-5

Cited by 373 publications

(173 citation statements)

References 121 publications

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“…The use of mixed metal ferrites (with Mn, Ni, Zn) lowers the temperature of the activation step and avoids phase transformations [77][78][79][80]. In combination with a high-temperature stable zirconia support, a material is gained that can be re-used for several cycles without elaborate processing [53,81].…”

Section: Thermochemical Cycles Under Considerationmentioning

confidence: 99%

Functioning devices for solar to fuel conversion

Mul¹,

Schacht²,

Swaaij³

et al. 2012

Chemical Engineering and Processing: Process Intensification

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a b s t r a c tThis paper provides a perspective on the technologies capable of converting solar energy, CO 2 and H 2 O into an easy to use fuel. The paper addresses bio-based approaches, but mainly focuses on (i) the combination of photovoltaic (PV) devices and electrocatalysis, (ii) single unit operation by photocatalytic conversion, and (iii) solar thermal conversion. Each option is described in a general manner, including a brief evaluation of the advantages and disadvantages. Also suggestions for future research endeavours are given. Based on the used literature data, for electrocatalytic and photocatalytic technologies, dramatic improvements should be made in material optimization, as well as reactor design and operation. Large efficiency gains are necessary to enable use of these technologies in practice. Solar thermal conversion is more mature, and requires specific optimization in processing, as will be discussed.

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Section: Thermochemical Cycles Under Considerationmentioning

confidence: 99%

Functioning devices for solar to fuel conversion

Mul¹,

Schacht²,

Swaaij³

et al. 2012

Chemical Engineering and Processing: Process Intensification

View full text Add to dashboard Cite

show abstract

“…Significant effort continues to examine alternative reactor conditions [114,115], catalysts [116,117], and membrane reactor designs [118], as well as H 2 sources [103,104], so variations to H 2 −separating conditions and, therefore, to membrane material performance requirements, are likely to continue into the future [108].…”

Section: Application Regimes Of Proton Conductors For H 2 Separationmentioning

confidence: 99%

Review of proton conductors for hydrogen separation

Phair

Badwal

2006

Ionics

221

132

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There is a global push to develop a range of hydrogen technologies for timely adoption of the hydrogen economy. This is critical in view of the depleting oil reserves and looming transport fuel shortage, global warming, and increasing pollution. Molecular hydrogen (H 2 ) can be generated by a number of renewable and fossil-fuel-based resources. However, given the high cost of H 2 generation by renewable energy at this stage, fossil or carbon fuels are likely to meet the short-to medium-term demand for hydrogen. In view of this, effective technologies are required for the separation of H 2 from a gas feed (by-products of coal or bio-mass gasification plants, or gases from fossil fuel partial oxidation or reforming) consisting mainly of H 2 and CO 2 with small quantities of other gases such as CH 4 , CO, H 2 O, and traces of sulphur compounds. Several technologies are under development for hydrogen separation. One such technology is based on ion transport membranes, which conduct protons or both protons and electrons. Although these materials have been considered for other applications, such as gas sensors, fuel cells and water electrolysis, the interest in their use as gas separation membranes has developed only recently. In this paper, various classes of proton-conducting materials have been reviewed with specific emphasis on their potential use as H 2 separation membranes in the industrial processes of coal gasification, natural gas reforming, methanol reforming and the watergas shift (WGS) reaction. Key material requirements for their use in these applications have been discussed.

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“…In addition, solar reforming is also a storage mechanism because it stores the solar energy in the form of a chemical fuel [4,5,6]. Furthermore, system of a direct expansion chemical cycle utilizing steam reforming of methane shows that CO 2 emissions can be reduced by as much as 22% when compared to traditional combustion of methane [7].…”

Section: Introductionmentioning

confidence: 99%

Redox reforming based, integrated solar-natural gas plants: Reforming and thermodynamic cycle efficiency

Sheu

Ghoniem

2014

International Journal of Hydrogen Energy

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As demand for energy continues to rise, the concern over the increase in emissions grows, prompting much interest in using renewable energy resources such as solar energy. However, there are numerous issues with using solar energy including intermittancy and the need for storage. A potential solution is the concept of hybrid solar-fossil fuel power generation. Previous work has shown that utilizing solar reforming in conventional power cycles has higher performance compared to other integration methods. Most previous studies have focused on steam or dry reforming and on specific component analysis rather than a systems level analysis. In this article, a system analysis of a hybrid cycle utilizing redox reforming is presented.Important cycle design and operation parameters such as the oxidation temperature and reformer operating pressure are identified and their effect on both the reformer and cycle performance is discussed. Simulation results show that increasing oxidation temperature can improve reformer and cycle efficiency. Also shown is that increasing the amount of reforming water leads to a higher reformer efficiency, but can be detrimental to cycle efficiency depending on how the reforming water is utilized.

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High-temperature solar chemistry for converting solar heat to chemical fuels

Cited by 373 publications

References 121 publications

Functioning devices for solar to fuel conversion

Functioning devices for solar to fuel conversion

Review of proton conductors for hydrogen separation

Redox reforming based, integrated solar-natural gas plants: Reforming and thermodynamic cycle efficiency

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