Studies of physicochemical characteristics of organoclay with carboxydecyltriethylammonium chloride ion. (19th May 2021)

• Record Type: Journal Article
• Authors: Kuo, Shu-Lung; Ho, Ching-Lin
• Is Part Of: Journal of the Chinese Institute of Engineers. Volume 44:Number 4(2021)
• Page Start: 399
• Page End: 405
• Publication Date: 2021-05-19
• Subjects: Organoclay -- CDTEA -- smectite -- FE-SEM -- catalyst carrier; Technology -- Periodicals; Engineering -- Periodicals; 620.005
• DOI: 10.1080/02533839.2021.1897686
• Languages: English
• ISSNs: 0253-3839

Abstract

ABSTRACT: This study used the soil representative of Taitung in Taiwan, Santai (St) series soil, as the catalyst carrier and exchanged arboxydecyltriethylammonium chloride (CDTEA) onto it through ion exchange, forming nano-level St-CDTEA organoclay via surface modification and high-temperature sintering. The physical and chemical properties of the St-CDTEA organoclay were then studied via a series of physical and chemical experiments. First, an analysis of the basic properties of St series soil shows that it does not have a high organic matter content because it is affected by either rainfall erosion or intensive farming, which causes a decrease in organic matter after it is consumed or lost. The Fourier-transform infrared spectroscopy (FT-IR) analysis suggests that compared with the unmodified St series soil, C-H bonds are found between 2900 cm-1 and 2850 cm-1 and COOH bond around 1750 cm-1 in St-CDTEA organoclay. A field emission scanning electron microscope (FE-SEM) analysis shows the formation of a crystal structure on the surface of the St-CDTEA organoclay because St series soil contains a larger amount of smectite and the structure of the St-CDTEA organoclay absorbs a significant amount of CDTEA molecules (the molecular structure of CDTEA contains three ethyls) after high-temperature sintering.