Establishment of adsorption isotherms of m- and p-cresols in chromatographic process with aluminum terephthalate metal-organic framework as stationary phase

Li, Shoujiang; Peng, Bo; Wang, Shaoyan

doi:10.1016/j.chroma.2019.460599

Cited by 12 publications

(4 citation statements)

References 35 publications

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“…Specifically, Li et al utilized MIL-53(Al) as a stationary phase of HPLC for separating m-cresol and p-cresol with the purify values of 96.26 % and 93.23 %. [118] Besides, they found that this adsorption process could not be accurately expressed by conventional Moreau, BET, Sips, and Langmuir-Sips models. Therefore, they further demonstrated the adsorption process of m-cresol and p-cresol contained two steps: The Langmuir adsorption of low-concentration solute in narrow pores and the multi-order adsorption of high-concentration solute in large pores.…”

Section: Stationary Phases Of Chromatographymentioning

confidence: 99%

Electrochemical Synthesis Methods of Metal‐Organic Frameworks and Their Environmental Analysis Applications: A Review

Ren

Wei

2022

ChemElectroChem

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ing new MOFs and developing novel eco-friendly electrochemical synthesis methods for MOFs' application in environmental analysis. Moreover, the applications of MOFs in environmental analysis field in recent years were comprehensively illustrated and the advantages and disadvantages of electrochemical synthesis methods to prepare MOFs as environmental analytical nanomaterials were evaluated. Finally, some suggestions for the optimization of electrochemical synthesis methods for MOFs and their future opportunities in environmental analytical applications were proposed.

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Section: Stationary Phases Of Chromatographymentioning

confidence: 99%

Electrochemical Synthesis Methods of Metal‐Organic Frameworks and Their Environmental Analysis Applications: A Review

Ren

Wei

2022

ChemElectroChem

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“…Furthermore, the focus on printouts from analytical instruments ( 5) is inconsistent with US and EU regulations for keeping current with technology (9,10), in addition to some recent FDA warning letters (11)(12)(13) that will be discussed later.…”

Section: Defining Static and Dynamic Datamentioning

confidence: 99%

Hydrophilic-Phase Extraction: A New Avenue of Solid-Phase Extraction for Oligonucleotide Bioanalysis

MacNeill

2022

LCGC Eur.

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A novel mode of bioanalytical solid-phase extraction (SPE) has been developed and used for a quantitative application involving an RNA oligonucleotide therapeutic candidate. Previously established protocols and media showed very little recovery, and so this new approach, based on hydrophilic interaction liquid chromatography (HILIC) with an aminopropyl-bonded phase on a silica support and providing an essentially uncharted avenue of selectivity, was explored. The procedure featured only one step prior to sample load, high-organic sorbent conditioning, two washes following the load that switched between low and high pH, followed by elution in an a highly eluotropic HILIC composition. The moniker of “hydrophilic-phase extraction” (HPE) was given to the procedure. The HPE was proven to be a critical part of a fully quantitative HILIC–high-resolution mass spectrometry (HRMS) method for the RNA oligonucleotide and has potential for general application.

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“…It has been reported that when MIL-53 adsorbs guest molecules, "breathing effect" sometimes occurs, resulting in two different types of adsorption sites: large pores and narrow pores. [36][37][38] Therefore, it is necessary to adjust the Langmuir competitive adsorption equation. Accordingly, Equation (18) with two different types of adsorption sites should be adopted.…”

Section: Determination Of Competitive Adsorption Model Parametersmentioning

confidence: 99%

Establishment of Fuzzy Langmuir Adsorption Model and Prediction of Chromatographic Behavior

Wang

2022

Advcd Theory and Sims

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In order to accurately predict the complex chromatographic behaviors of the components to be separated, the fuzzy Langmuir adsorption equations and the back propagation-artificial neural network (BP-ANN) are combined to establish fuzzy Langmuir adsorption models. Herein, the fuzzy Langmuir adsorption equations are deduced based on a series of different traditional adsorption equations such as with or without competition, one or two kinds of adsorbed sites, monomolecular or multimolecular adsorption, etc. The major adsorption parameter C i (form concentration) is the function of the actual concentration c i , expressed in matrix form constructed by BP-ANN and is obtained by solving the equilibrium dispersive chromatography model with the inverse method and genetic algorithm. Finally, the fuzzy Langmuir models are applied to study the chromatographic behaviors of m-cresol and p-cresol on MIL-53 (Al) stationary phase. The results show that the models have excellent curve fitting ability, and can be used to determine the adsorption relationship and predict the chromatographic elution curves under complex or unknown adsorption mechanism.

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Establishment of adsorption isotherms of m- and p-cresols in chromatographic process with aluminum terephthalate metal-organic framework as stationary phase

Cited by 12 publications

References 35 publications

Electrochemical Synthesis Methods of Metal‐Organic Frameworks and Their Environmental Analysis Applications: A Review

Electrochemical Synthesis Methods of Metal‐Organic Frameworks and Their Environmental Analysis Applications: A Review

Hydrophilic-Phase Extraction: A New Avenue of Solid-Phase Extraction for Oligonucleotide Bioanalysis

Establishment of Fuzzy Langmuir Adsorption Model and Prediction of Chromatographic Behavior

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