Effect of dry grinding on chemically modified kaolin
Source abstract
Abstract
Abstract The effect of dry grinding on the morphology and structure of kaolin particles treated with potassium acetate (KAc) and dimethyl sulfoxide (DMSO) has been investigated. After treatment with KAc, the d -spacing of kaolin increased from 0.72 to 1.03, 1.30, and 1.38 nm due to the combined effects of humidity and orientation of KAc molecules. The d -spacing was increased to 1.13 nm in the case of DMSO treatment. A combination of XRD, TGA, and FT-IR showed that the crystalline structure of kaolin–DMSO and kaolin–KAc were significantly altered by grinding. The intensity of XRD diffraction peaks of ground samples was decreased due to the deterioration of the crystalline structure, and for longer grinding times those peaks almost disappeared. After grinding, the dehydroxylation temperature generally shifted to lower values and a smaller weight loss was observed. The variations of particle size and surface characteristics were also investigated.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Clay minerals and soil interactions · Geological and Geochemical Analysis · Soil and Unsaturated Flow
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (21)
Show source-provided references
1. Thermal behaviour of dickite–dimethylsulfoxide intercalation complex10.1023/A:1025189625856 ↗
2. Modification of kaolinite surfaces through intercalation with potassium acetate II10.1006/jcis.1999.6177 ↗
3. Modification of the hydroxyl surface in potassium-acetate-intercalated kaolinite between 25 and 300° C10.1021/la9915318 ↗
4. Mechanochemical treatment of kaolinite10.1006/jcis.2001.7591 ↗
5. Modification of kaolinite surfaces by mechanochemical treatment10.1021/la001453k ↗
6. Modification of low- and high-defect kaolinite surfaces: implications for kaolinite mineral processing10.1016/j.jcis.2003.10.034 ↗
7. Modification of low- and high-defect kaolinite surfaces: implications for kaolinite mineral processing10.1016/j.jcis.2003.10.034 ↗
8. Thermal behavior and decomposition of intercalated kaolinite10.1346/CCMN.1995.0430209 ↗
9. Experimental study of the hydrothermal formation of kaolinite10.1016/S0009-2541(98)00180-6 ↗
10. Ordering of hydroxyl defects in hydrous wadsleyite (β-Mg2SiO4)10.2138/am-2002-2-310 ↗
11. Thermoanalytical investigations on intercalated kaolinites10.1023/A:1010189324654 ↗
12. Reactivity of kaolinite in ionic liquids: preparation and characterization of a 1-ethyl pyridinium chloride–kaolinite intercalate10.1039/b511282f ↗
13. Nanohybrid materials from the intercalation of imidazolium ionic liquids in kaolinite10.1039/b616922h ↗
14. Application of thermal analysis for the characterisation of intercalated and grafted organo-kaolinite nanohybrid materials10.1007/s10973-010-1269-8 ↗
15. Modification of kaolinite surfaces through intercalation with deuterated dimethylsulfoxide10.1021/jp0130113 ↗
16. Kaolinite properties, structure and influence of metal retention on pH10.1016/S0169-1317(03)00095-4 ↗
17. Infrared spectroscopy of goethite dehydroxylation. II. Effect of aluminium substitution on the behaviour of hydroxyl units10.1016/S1386-1425(01)00556-X ↗
18. Effects of dry grinding on the structural changes of kaolinite powders10.1111/j.1151-2916.2000.tb01444.x ↗
19. The effect of micronization on kaolinites and their sorption behaviour10.1016/S0169-1317(96)00044-0 ↗
20. Delamination of urea–kaolinite complex by using intercalation procedures10.1111/j.1151-2916.1999.tb01963.x ↗
21. Intercalation of kaolinite under hydrothermal conditions10.1007/BF00353104 ↗