A method for screening possible thermochemical decomposition processes for water using ΔG0 -T diagrams

110th Anniversary: Carbon Dioxide and Chemical Looping: Current Research Trends

“…In fact, although their focus was primarily on producing CO 2 , the process that Lewis and Gilliland proposed is now referred to as chemical looping combustion . The concept of thermally splitting water in hydrogen and oxygen by means of a two-step chemical looping process can be traced back at least to 1966, when Funk and Reinstrom made a thermodynamic study on the decomposition of water for hydrogen production . After a patent filed by Schulten and Knoche in 1972, research interest in other sulfur-based thermochemical looping cycles for hydrogen production increased in the 1970s. , In 1976, Kameyama and co-workers published a particularly thorough screening method for potential multistep thermochemical hydrogen production cycles based on metal chlorides, bromides, iodides, sulfates and nitrates . The three-step cycle proposed by Schulten and Knoche, which requires recycling of gaseous SO 2 , is presented by eqs –.…”

“…94,95 In 1976, Kameyama and coworkers published a particularly thorough screening method for potential multistep thermochemical hydrogen production cycles based on metal chlorides, bromides, iodides, sulfates and nitrates. 96 The three-step cycle proposed by Schulten and Knoche, which requires recycling of gaseous SO 2 , is presented by eqs 17−19. The global reaction corresponds with eq 20.…”

110th Anniversary: Carbon Dioxide and Chemical Looping: Current Research Trends

“…In fact, although their focus was primarily on producing CO 2 , the process that Lewis and Gilliland proposed is now referred to as chemical looping combustion . The concept of thermally splitting water in hydrogen and oxygen by means of a two-step chemical looping process can be traced back at least to 1966, when Funk and Reinstrom made a thermodynamic study on the decomposition of water for hydrogen production . After a patent filed by Schulten and Knoche in 1972, research interest in other sulfur-based thermochemical looping cycles for hydrogen production increased in the 1970s. , In 1976, Kameyama and co-workers published a particularly thorough screening method for potential multistep thermochemical hydrogen production cycles based on metal chlorides, bromides, iodides, sulfates and nitrates . The three-step cycle proposed by Schulten and Knoche, which requires recycling of gaseous SO 2 , is presented by eqs –.…”

“…94,95 In 1976, Kameyama and coworkers published a particularly thorough screening method for potential multistep thermochemical hydrogen production cycles based on metal chlorides, bromides, iodides, sulfates and nitrates. 96 The three-step cycle proposed by Schulten and Knoche, which requires recycling of gaseous SO 2 , is presented by eqs 17−19. The global reaction corresponds with eq 20.…”

Metal Oxides Applied to Thermochemical Water-Splitting for Hydrogen Production Using Concentrated Solar Energy

“…The cycles that were eliminated did not respond to the above criteria, as it was the case for those requiring very high temperatures (higher than 2200 • C) (MoO 2 /Mo, SiO 2 /SiO, WO 3 /W), hybrid cycles involving an electrochemical step (Cu-Cl cycle [31,32]), cycles based on toxic (Cd, Hg, or bromide) or corrosive compounds such as potassium hydroxide, cycles that necessitate advanced gas separation techniques (such as membrane technologies), or cycles for which thermodynamics is not favorable such as most cycles based on sulphates [33,34] or chlorine [35][36][37][38]. In addition, a method of exergy analysis was developed to determine the exergy requirements and the global exergy efficiency of each selected thermochemical cycle [28].…”

110th Anniversary: Carbon Dioxide and Chemical Looping: Current Research Trends

“…In fact, although their focus was primarily on producing CO 2 , the process that Lewis and Gilliland proposed is now referred to as chemical looping combustion . The concept of thermally splitting water in hydrogen and oxygen by means of a two-step chemical looping process can be traced back at least to 1966, when Funk and Reinstrom made a thermodynamic study on the decomposition of water for hydrogen production . After a patent filed by Schulten and Knoche in 1972, research interest in other sulfur-based thermochemical looping cycles for hydrogen production increased in the 1970s. , In 1976, Kameyama and co-workers published a particularly thorough screening method for potential multistep thermochemical hydrogen production cycles based on metal chlorides, bromides, iodides, sulfates and nitrates . The three-step cycle proposed by Schulten and Knoche, which requires recycling of gaseous SO 2 , is presented by eqs –.…”

“…94,95 In 1976, Kameyama and coworkers published a particularly thorough screening method for potential multistep thermochemical hydrogen production cycles based on metal chlorides, bromides, iodides, sulfates and nitrates. 96 The three-step cycle proposed by Schulten and Knoche, which requires recycling of gaseous SO 2 , is presented by eqs 17−19. The global reaction corresponds with eq 20.…”

Metal Oxides Applied to Thermochemical Water-Splitting for Hydrogen Production Using Concentrated Solar Energy

“…The cycles that were eliminated did not respond to the above criteria, as it was the case for those requiring very high temperatures (higher than 2200 • C) (MoO 2 /Mo, SiO 2 /SiO, WO 3 /W), hybrid cycles involving an electrochemical step (Cu-Cl cycle [31,32]), cycles based on toxic (Cd, Hg, or bromide) or corrosive compounds such as potassium hydroxide, cycles that necessitate advanced gas separation techniques (such as membrane technologies), or cycles for which thermodynamics is not favorable such as most cycles based on sulphates [33,34] or chlorine [35][36][37][38]. In addition, a method of exergy analysis was developed to determine the exergy requirements and the global exergy efficiency of each selected thermochemical cycle [28].…”

110th Anniversary: Carbon Dioxide and Chemical Looping: Current Research Trends

“…In fact, although their focus was primarily on producing CO 2 , the process that Lewis and Gilliland proposed is now referred to as chemical looping combustion . The concept of thermally splitting water in hydrogen and oxygen by means of a two-step chemical looping process can be traced back at least to 1966, when Funk and Reinstrom made a thermodynamic study on the decomposition of water for hydrogen production . After a patent filed by Schulten and Knoche in 1972, research interest in other sulfur-based thermochemical looping cycles for hydrogen production increased in the 1970s. , In 1976, Kameyama and co-workers published a particularly thorough screening method for potential multistep thermochemical hydrogen production cycles based on metal chlorides, bromides, iodides, sulfates and nitrates . The three-step cycle proposed by Schulten and Knoche, which requires recycling of gaseous SO 2 , is presented by eqs –.…”

“…94,95 In 1976, Kameyama and coworkers published a particularly thorough screening method for potential multistep thermochemical hydrogen production cycles based on metal chlorides, bromides, iodides, sulfates and nitrates. 96 The three-step cycle proposed by Schulten and Knoche, which requires recycling of gaseous SO 2 , is presented by eqs 17−19. The global reaction corresponds with eq 20.…”

Metal Oxides Applied to Thermochemical Water-Splitting for Hydrogen Production Using Concentrated Solar Energy

“…The cycles that were eliminated did not respond to the above criteria, as it was the case for those requiring very high temperatures (higher than 2200 • C) (MoO 2 /Mo, SiO 2 /SiO, WO 3 /W), hybrid cycles involving an electrochemical step (Cu-Cl cycle [31,32]), cycles based on toxic (Cd, Hg, or bromide) or corrosive compounds such as potassium hydroxide, cycles that necessitate advanced gas separation techniques (such as membrane technologies), or cycles for which thermodynamics is not favorable such as most cycles based on sulphates [33,34] or chlorine [35][36][37][38]. In addition, a method of exergy analysis was developed to determine the exergy requirements and the global exergy efficiency of each selected thermochemical cycle [28].…”