Regulation of hydrophilicity/hydrophobicity of aluminosilicate zeolites: a review. Issue 4 (4th July 2021)

• Record Type: Journal Article
• Authors: Wang, Cheng; Guo, Huidong; Leng, Shaozheng; Yu, Jiale; Feng, Kai; Cao, Liyun; Huang, Jianfeng
• Is Part Of: Critical reviews in solid state & materials sciences. Volume 46:Issue 4(2021)
• Page Start: 330
• Page End: 348
• Publication Date: 2021-07-04
• Subjects: Hydrophilicity/hydrophobicity -- regulation -- zeolite; Solid state physics -- Periodicals; Solids -- Periodicals; Materials -- Periodicals; 530.41
• DOI: 10.1080/10408436.2020.1819198
• Languages: English
• ISSNs: 1040-8436

Abstract

Abstract: The hydrophilicity/hydrophobicity of zeolites has been received increasing attentions due to its great influence on the physical, chemical property and application of zeolites. Generally, zeolites with different hydrophilicity/hydrophobicity exhibit different interaction with molecules/contaminations of different polarity, and thus have found promising applications in various and different fields. In this review, we first discuss the two main influence factors, i.e. SiO2 /Al2 O3 ratio and surface hydroxyl groups affecting hydrophilicity/hydrophobicity of aluminosilicate zeolites. Then, we give an overview of the ways for regulation of hydrophilicity/hydrophobicity of zeolites, i.e. hydrothermal synthesis, post synthesis for SiO2 /Al2 O3 ratio regulation and heat treatment, surface modification, water intrusion-extrusion method for hydroxyl groups regulation. The third, the hydrophilicity/hydrophobicity determination methods, i.e. water vapor adsorption, hydrocarbon/water vapor adsorption and TG experiment methods are concluded and compared. Finally, the problems and challenges for the future of this subject are discussed.