Functionalization effects on HKUST-1 and HKUST-1/graphene oxide hybrid adsorbents for hydrogen sulfide removal

Bhoria, Nidhika; Basina, Georgia; Pokhrel, Jeewan; Reddy, K. Suresh Kumar; Anastasiou, Stavroula; Balasubramanian, Vaithilingam; Wahedi, Yasser Al; Karanikolos, Georgios N.

doi:10.1016/j.jhazmat.2020.122565

Cited by 104 publications

(52 citation statements)

References 77 publications

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“…Moreover, the literature has been saturated with the studies related to CuBTC (also known as HKUST-1 or MOF-199). [8][9][10][11][12] The need to explore other Cu-based MOFs and the lack of proper investigation on the regeneration of spent Cubased MOFs have motivated us to develop methanol and UVassisted regeneration method.…”

Section: Introductionmentioning

confidence: 99%

Chemisorption of hydrogen sulfide over copper-based metal–organic frameworks: methanol and UV-assisted regeneration

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Chemisorption of hydrogen sulfide over copper-based metal–organic frameworks: methanol and UV-assisted regeneration

et al. 2021

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“… 3 − 7 Biogas upgrading for increasing its calorific value involves specific steps, starting with H 2 O condensation, desulfurization (e.g., removal of toxic and corrosive H 2 S), and CO 2 sequestration based on different universally established and commonly used technologies including physisorption and/or chemisorption, membrane or cryogenic separation, and by chemical or biological treatment. 3 , 8 − 10 …”

Section: Introductionmentioning

confidence: 99%

Adsorption of Hydrogen Sulfide at Low Temperatures Using an Industrial Molecular Sieve: An Experimental and Theoretical Study

et al. 2021

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In the work presented herein, a joint experimental and theoretical approach has been carried out to obtain an insight into the desulfurization performance of an industrial molecular sieve (IMS), resembling a zeolitic structure with a morphology of cubic crystallites and a high surface area of 590 m 2 g –1 , with a view to removing H 2 S from biogas. The impact of temperature, H 2 S inlet concentration, gas matrix, and regeneration cycles on the desulfurization performance of the IMS was thoroughly probed. The adsorption equilibrium, sorption kinetics, and thermodynamics were also examined. Experimental results showed that the relationship between H 2 S uptake and temperature increase was inversely proportional. Higher H 2 S initial concentrations led to lower breakpoints. The presence of CO 2 negatively affected the desulfurization performance. The IMS was fully regenerated after 15 adsorption/desorption cycles. Theoretical studies revealed that the Langmuir isotherm better described the sorption behavior, pore diffusion was the controlling step of the process (Bangham model), and that the activation energy was 42.7 kJ mol –1 (physisorption). Finally, the thermodynamic studies confirmed that physisorption predominated.

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“…In addition, they exhibit a reasonable degree of thermal stability (up to 240 • C). In the recent past, various scientific works turned their attention to probing several aspects of H 2 S adsorption using this hybrid material [73][74][75][76][77][78][79][80][81][82][83][84][85][86][87][88][89].…”

Section: H 2 S Capture Via Hkust−1 (Hong King University Of Science Amentioning

confidence: 99%

“…In a more recent study by the same group [75] in-situ grown MOF−199 on GO, was doped with polyethyleneimine (PEI), and hybridized with GO along with functionalized GO for H 2 S capture. It was reported that, at ambient conditions, the pristine MOF−199 exhibited lower H 2 S adsorption capacity (0.5 mmol g −1 ) in comparison to that of the MOF−199/GO, which was pre-functionalized with low molecular weight PEI.…”

Section: H 2 S Capture Via Hkust−1 (Hong King University Of Science Amentioning

confidence: 99%

“…An even more challenging task is to construct MOFs with decent acid/base stability. Essentially, hard/soft acid/base (HSAB) theory states that soft Lewis acids react faster and form stronger bonds with soft Lewis bases, whereas hard Lewis acids react faster and form stronger bonds with hard Lewis bases [75,127]. However, considerable progress has been made in developing MOFs with acid/base stability.…”

Section: Connection Between Functions and Structural Features Of Mofsmentioning

confidence: 99%

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Hydrogen Sulfide (H2S) Removal via MOFs

et al. 2020

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The removal of the environmentally toxic and corrosive hydrogen sulfide (H2S) from gas streams with varying overall pressure and H2S concentration is a long-standing challenge faced by the oil and gas industries. The present work focuses on H2S capture using a relatively new type of material, namely metal-organic frameworks (MOFs), in an effort to shed light on their potential as adsorbents in the field of gas storage and separation. MOFs hold great promise as they make possible the design of structures from organic and inorganic units, but also as they have provided an answer to a long-term challenging objective, i.e., how to design extended structures of materials. Moreover, in designing MOFs, one may functionalize the organic units and thus, in essence, create pores with different functionalities, and also to expand the pores in order to increase pore openings. The work presented herein provides a detailed discussion, by thoroughly combining the existing literature on new developments in MOFs for H2S removal, and tries to provide insight into new areas for further research.

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Functionalization effects on HKUST-1 and HKUST-1/graphene oxide hybrid adsorbents for hydrogen sulfide removal

Cited by 104 publications

References 77 publications

Chemisorption of hydrogen sulfide over copper-based metal–organic frameworks: methanol and UV-assisted regeneration

Chemisorption of hydrogen sulfide over copper-based metal–organic frameworks: methanol and UV-assisted regeneration

Adsorption of Hydrogen Sulfide at Low Temperatures Using an Industrial Molecular Sieve: An Experimental and Theoretical Study

Hydrogen Sulfide (H2S) Removal via MOFs

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