Prospects of solar thermal hydrogen production processes

Rational design of manganese ferrite-graphene hybrid photocatalysts: Efficient water splitting and effective elimination of organic pollutants

“…The dramatic depletion in fossil fuel as well as enhancing CO 2 emissions have motivated the researchers to work on alternative energy sources. Accordingly, renewable energy such as solar power is efficiently used via photocatalysis themes to produce hydrogen gas [3,4].…”

Performance assessment of solar-driven integrated Mg–Cl cycle for hydrogen production

“…Hydrogen production through thermochemical cycles utilizing concentrated solar radiation as the energy source was reviewed and researches were described by Pregger et al [17]. The thermodynamic analysis of these solar-thermochemical cycles was assessed by Fletcher [18] and compared and discussed by Joshi et al [19], in terms of exergy efficiency and sustainability.…”

A review of solar methane reforming systems

“…This, in essence, creates a means of relatively easy storage and transportation of the solar energy [1,2,3]. This conversion can be achieved through a number of different ways including (i) thermochemical cycles for splitting water and carbon dioxide, (ii) solar cracking/gasification of solid fuels, and (iii) solar reforming of liquid and gaseous hydrocarbons [4,5,6,7]. Thermochemical cycles for water splitting involve using heat sources to dissociate water into hydrogen and oxygen.…”

“…In this review, reforming systems will be evaluated on the basis of (if given) (i) chemical efficiency, (ii) fuel conversion, (iii) catalytic activity and stability, and (iv) residence time. Chemical efficiency is defined as the percent of solar energy transferred to the solar reforming product (syngas -CO and H 2 ) as chemical enthalpy change, η chem =ṅ prod ∆H proḋ Q solar (6) where η chem is the chemical efficiency,ṅ prod is the product molar flow rate, ∆H prod is the chemical enthalpy change of the products with respect to the reactants, and Q solar is the solar energy input. Fuel conversion is defined as the percentage of input fuel (usually methane) converted into the reforming product (usually syngas) -essentially anything that is not part of the original fuel.…”