Reversing adsorption and separation of 1-phenylethanol and acetophenone in organic phase via β-ketoenamine-linked covalent organic frameworks

Zhao, Ziqi; Liang, Shaokun; Kang, Changhui; Zhang, Zhaoqiang; Zhou, Liqin; Zhao, Zhenxia; Qin, Xingzhen; Pang, Yushan; Ji, Hongbing; Chai, Kungang

doi:10.1016/j.cej.2022.140531

Cited by 5 publications

(3 citation statements)

References 42 publications

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“…and various gases (carbon dioxide, water vapor, olefins, alkanes, etc. ). ,− Raw data that were not tabulated in the original paper were digitized manually. All fitting processes were conducted using a minimization of the sum of squared errors in MATLAB.…”

Section: Methodsmentioning

confidence: 99%

“…Recently, along with the further development and application of new porous adsorbents, many more complex but interesting adsorption isotherms have been commonly discovered. When porous metal–organic frameworks (MOFs) are taken as an example, carbon dioxide (CO 2 ) and water vapor (H 2 O) adsorption isotherms often appeared as types II, V, VI (stepwise isotherm), etc. ,− It may originate from the variety and complexity of adsorption active sites, including various metal active sites, surface functional groups, pores of different scales or shapes, etc. Besides, the distribution of these adsorption active sites may appear patchwise or discontinuous, causing a more complex and discontinuous distribution of adsorption potential energy.…”

Section: Methodsmentioning

confidence: 99%

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Bridging the Adsorption Data and Adsorption Process by Introducing a Polynomial Structure To Accurately Describe IUPAC Isotherms, Stepwise Isotherms, and Stepwise Breakthrough Curves

Zheng,

Yang,

et al. 2024

Langmuir

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Porous heterogeneous adsorbents, those composed of multiple pore structures and surface chemical adsorption sites, can result in various gas or vapor adsorption isotherms, including five types of IUPAC adsorption isotherms and stepwise adsorption isotherms that have been difficult to model using a single adsorption equilibrium model. The limitation of the above equilibrium model further restricts the calculations of complex stepwise breakthrough curves. To bridge the adsorption data and adsorption process, it is important to first develop a simple model or method to describe these isotherms of various complex adsorption systems. In this work, assuming that the effect of the diffusion rate can be neglected under the static condition and the adsorption process is discontinuous, the number of adsorption isotherm inflection points can be used to represent the changed number of adsorption interactions. With the introduction of the polynomial structure, a series of empirical or semi-empirical polynomial adsorption models were developed. The N-site polynomial Langmuir–Freundlich equation could accurately fit common type I, II, III, IV, and V adsorption isotherms and complex stepwise adsorption isotherms covering various adsorbates, such as volatile organic compounds (VOCs), toxic industrial chemicals (TICs), water vapor, and carbon dioxide, as well as different adsorbents, such as metal/covalent organic frameworks (MOFs/COFs), zeolites, and porous carbons. Similarly, the introduction of a polynomial structure, such as the N-site polynomial Yoon–Nelson equation, was also successful in the description of interesting stepwise breakthrough curves. This work provides a more accurate adsorption equilibrium model to characterize all types of isotherms. As a foundation model, it is expected to be used to simulate the gas–solid adsorption process inside the fixed and fluidized beds packed with porous adsorbents.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Bridging the Adsorption Data and Adsorption Process by Introducing a Polynomial Structure To Accurately Describe IUPAC Isotherms, Stepwise Isotherms, and Stepwise Breakthrough Curves

Zheng,

Yang,

et al. 2024

Langmuir

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“…Meanwhile, various condensation reactions, including Schiff base condensation, boric acid dehydration condensation, and cyano self-polymerization, have been utilized to construct a variety of COFs with specific applications. COFs with low densities, large specific surface areas, high chemical stabilities, and good biocompatibilities have a wide range of applications in optoelectronic devices, energy conversion and storage, , adsorption and separation, , sensing, , organic catalysis, , and biomedicine . Especially in recent years, the development of functionalized COFs through predesign and postsynthesis modification has gained broad prospects in biomedicine.…”

Section: Introductionmentioning

confidence: 99%

Nanoplatforms Based on Covalent Organic Frameworks (COFs) for Biomedical Applications

Liang,

Li,

et al. 2023

Chem. Mater.

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Covalent organic frameworks (COFs) make up an emerging class of crystalline porous materials mainly composed of light elements in the form of dynamic covalent bonds. Owing to their two- or three-dimensional network structures and ideal properties, including low density, large specific surface area, high chemical stability, and good biocompatibility, COFs have shown a wide range of applications in optoelectronic devices, energy conversion and storage, adsorption and separation, sensing, organic catalysis, and biomedicine. This review provides an overview of the recent advances in functional COF-based nanoplatforms for biological diagnosis and treatment, such as enzyme catalysis, protein separation, drug delivery, photodynamic/photothermal therapy, and synergistic treatment. Challenges and future directions of developing COFs for biomedicine and related applications are also discussed. We envisage that this review will inspire materials scientists, chemists, biologists, and clinical doctors working in related fields to work closely to move this field toward clinical trials and human healthcare.

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Porous covalent organic framework nanofibrous membrane for excellent enrichment and ultra-high sensitivity detection of trace organochlorine pesticides in water

Lin,

Weng,

Lin

et al. 2024

Journal of Chromatography A

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Reversing adsorption and separation of 1-phenylethanol and acetophenone in organic phase via β-ketoenamine-linked covalent organic frameworks

Cited by 5 publications

References 42 publications

Bridging the Adsorption Data and Adsorption Process by Introducing a Polynomial Structure To Accurately Describe IUPAC Isotherms, Stepwise Isotherms, and Stepwise Breakthrough Curves

Bridging the Adsorption Data and Adsorption Process by Introducing a Polynomial Structure To Accurately Describe IUPAC Isotherms, Stepwise Isotherms, and Stepwise Breakthrough Curves

Nanoplatforms Based on Covalent Organic Frameworks (COFs) for Biomedical Applications

Porous covalent organic framework nanofibrous membrane for excellent enrichment and ultra-high sensitivity detection of trace organochlorine pesticides in water

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