Retention regularities of alkanols and other small organic molecules on 13X zeolite under HILIC conditions

IF 4.8 3区材料科学 Q1 CHEMISTRY, APPLIED

Microporous and Mesoporous Materials Pub Date : 2024-12-06 DOI:10.1016/j.micromeso.2024.113443

Viktoriia D. Kazakova, Nina B. Rozhmanova, Sergey N. Lanin, Pavel N. Nesterenko

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Abstract

The retention regularities on a column packed with microspherical zeolite 13X particles were studied for different classes of compounds (alkanes, aromatic substances, oxygen-, nitrogen-, chlorine-, and sulfur- containing compounds) under conditions of hydrophilic interaction liquid chromatography (HILIC) using methanol and acetonitrile as mobile phases. In general, the retention (logk’) of studied substances having kinetic diameter less than zeolite pore size is proportional to their polarity. The retention of organic substances was compared for 13X and mesoporous silica columns. A special attention was paid to the retention of n- and iso-alcohols homologues, for which a electrostatically induced sieving effect was observed. It was found that retention factors (k’) of solutes on 13X depend strongly on flow rate of the mobile phases indicating the presence of kinetic selectivity effect for the micrporous adsorbent. For the first time the baseline separation was obtained for the low homologues of n-alkanols. Also, selective separation of methanol and methanol-d₄ (selectivity α = 1.274; resolution of peaks R_S = 1.32) is achieved on 50 × 4.6 mm I.D. column with acetonitrile as the eluent.

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来源期刊

Microporous and Mesoporous Materials 化学-材料科学：综合

CiteScore

10.70

自引率

5.80%

发文量

649

审稿时长

26 days

期刊介绍： Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal. Topics which are particularly of interest include: All aspects of natural microporous and mesoporous solids The synthesis of crystalline or amorphous porous materials The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials Adsorption (and other separation techniques) using microporous or mesoporous adsorbents Catalysis by microporous and mesoporous materials Host/guest interactions Theoretical chemistry and modelling of host/guest interactions All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.