Hydrothermal stability of water sorption ionogels

Dong, Hongsheng; Askalany, Ahmed A.; Olkis, Christopher; Zhao, Jiafei; Santori, Giulio

doi:10.1016/j.energy.2019.116186

Cited by 13 publications

(13 citation statements)

References 58 publications

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“…Silica gel is a porous and amorphous form of silicon dioxide (SiO 2 ), and it is considered the most common material used for water adsorption 33 . Many studies have been performed to increase the adsorption water uptake by SG using the composite technique 9,34‐56 …”

Section: Compositementioning

confidence: 99%

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Composite adsorbent materials for desalination and cooling applications: A state of the art

Alsaman

Ibrahim

Ahmed

et al. 2022

Intl J of Energy Research

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Summary Adsorption technology is very attractive for producing desalinated water and cooling with no harmful impact on the environment. The performance of adsorption water applications (desalination and cooling) depends on the adsorption characteristics. Many adsorption systems designs were investigated worldwide, employing different adsorbent materials to develop a cost‐effective and high‐performance system. This review presents and summarizes the studies in adsorption and the corresponding applications in desalination and cooling and compares the adsorption properties of composite adsorbents. The review focuses on the composite materials and how they were synthesized while comparing them in terms of the amount of adsorption. The reviewed materials have been classified according to the basic host, such as silica gel, zeolite, carbon, metal‐organic frameworks (MOF), and vermiculite. The review contains more than 70 composites. The maximum reached water vapor uptake is 1.92 kg/kg of PHTS/CaCl2‐20 wt% composite at 0.9 P/Ps. The highest available desorption amount is 1.48 kg/kg of MOF composite for desalination applications and 0.87 kg/kg of vermiculite composite for cooling applications.

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Section: Compositementioning

confidence: 99%

“…Water uptake on SG composites available in the previous studies compared to pure SG 9,34‐37,39‐44,47,52‐55 …”

Section: Compositementioning

confidence: 99%

Composite adsorbent materials for desalination and cooling applications: A state of the art

Alsaman

Ibrahim

Ahmed

et al. 2022

Intl J of Energy Research

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“…76,77 Ionogels show outstanding performances at regeneration temperatures as low as 25 ∘ C. Hence, ionogels would be ideal for the ADRED process. 72,81,82 The amount of adsorption material could be reduced by a factor of four 81 to about 50 tons by using ionogels instead of silica gel in scenario 2× or 25 tons in scenario 1×. This would correspond to 2.5 − 5tons ig /MW.…”

Section: Limitations and Considerations For Industrial Applicationsmentioning

confidence: 99%

“…Ionogels show outstanding performances at regeneration temperatures as low as 25 ∘ C. Hence, ionogels would be ideal for the ADRED process 72,81,82 …”

Section: Model Analysismentioning

confidence: 99%

Adsorption reverse electrodialysis driven by power plant waste heat to generate electricity and provide cooling

2020

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Summary Steam power plants release more than half of the primary energy input as ultra low temperature heat below 40∘C into the environment causing thermal pollution. The emitted heat has a very low exergy content making it challenging to use as heat input by another process. Adsorption desalination combined with reverse electrodialysis can be powered by this heat and convert it into electricity. Thus, the system can mitigate thermal pollution and generate electricity at the same time. This study combines a validated reverse electrodialysis model with a dynamic adsorption desalination model that is validated with experimental data within this work. The experiments were conducted using a small‐scale adsorption desalinator and silica gel proving the feasibility of the regeneration at heat source temperatures as low as 40∘C. The simulations of the integrated system analyse different heat integration scenarios showing exergy efficiencies up to 15% and energy efficiencies up to 0.55%. Hence, the system could generate 65 kW electricity from a 20 MW heat source considering pumping losses.

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“…Water vapor adsorption is an important process for many industries, such as chemical and petro-chemical industry, microelectronics, paper making, pharmaceuticals, food preservation and processing, thermal energy conversion and storage, humidity control and adsorption heat pumps [1][2][3]. Therefore, many new materials are being studied for water adsorption: aluminophosphates [4], titanium and zirconium silicates [5,6], mesoporous silicas [7][8][9], metal-organic frameworks [10], composite desiccants formed by hygroscopic salts in inorganic host matrices [11] and ionogels [12,13]. Among these, mesoporous silica with metallic heteroatom functionalization has been considered an interesting option for water adsorption [14].…”

Section: Introductionmentioning

confidence: 99%

Influence of functionalization method on isomorphic substitution and formation of extra-framework oxides in silica for water vapor adsorption

et al. 2021

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Water vapor adsorption is a process of great importance for several industries. Because of that, new materials formed by mesoporous silica with metallic heteroatom functionalization have been studied for water adsorption. This functionalization process is still little studied in the literature, with many topics remaining to be evaluated. One of them is how each functionalization method (grafting and co-condensation) influences the generation of isomorphic substitution or extra-framework oxides. Another is which of these configurations is most interesting for water adsorption. This work aims to address both questions. For this, two groups of samples were synthesized using grafting and co-condensation for the insertion of Al, Ti, Zr and Li into mesoporous silica SBA-15. These samples were analyzed using nitrogen adsorption, high resolution scanning microscopy, energy dispersive X-ray spectroscopy, magic angle spinning nuclear magnetic resonance, Fourier transform infrared spectroscopy, pyridine adsorption and water adsorption. These techniques revealed that the co-condensation approach used in this work was most interesting for water adsorption at low partial pressures. This occurred because it generated a higher degree of isomorphic substitution, which was found to be the most active configuration of heteroatoms for this application.

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Hydrothermal stability of water sorption ionogels

Cited by 13 publications

References 58 publications

Composite adsorbent materials for desalination and cooling applications: A state of the art

Composite adsorbent materials for desalination and cooling applications: A state of the art

Adsorption reverse electrodialysis driven by power plant waste heat to generate electricity and provide cooling

Influence of functionalization method on isomorphic substitution and formation of extra-framework oxides in silica for water vapor adsorption

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