Crystal structure model development for soil clay minerals – I. Hydroxy-interlayered smectite (HIS) synthesized from bentonite. A multi-analytical study

Dietel, Jan; Gröger-Trampe, Jens; Bertmer, Marko; Kaufhold, Stephan; Ufer, Kristian; Dohrmann, R.

doi:10.1016/j.geoderma.2019.03.021

Cited by 14 publications

(11 citation statements)

References 55 publications

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“…They described HIMs as expandable 2:1 layers randomly interstratified with partly or fully occupied hydroxy‐interlayers, which is in accordance with Lanson et al () and Viennet et al (). The model also gives an estimated degree of hydroxy‐interlayering at the end of the refinement, which is plausible and fits to the calculated values from Dietel et al () within a certain range of errors. Although the quantified amount of HIS in the sample was determined accurately, the mean degree of hydroxy‐interlayering gives an estimation only.…”

Section: Structure Of Himssupporting

confidence: 74%

“…The authors suggested that distribution and amount of interlayer material control the stability. Dietel et al () showed that hydroxy‐interlayers of eight synthetic HIS samples dehydroxylated at 350 to 550°C, which accords with natural HIMs. Properties between the synthetic compounds may differ, depending on the dominant metal present in the hydroxy‐interlayer.…”

Section: The Controversy About the Origin And Chemical Nature Of Intementioning

confidence: 70%

“…Dehydroxylation, at which OH − groups of hydroxy‐interlayers condense to evolving H 2 O, as shown by endothermic peaks accompanied by a mass loss in STA data, occurs at approximately 360 and 470°C ( Barnhisel and Bertsch , ) or 500°C ( Rich , ). Dietel et al () discussed the presence of a double dehydroxylation peak and concluded that hydroxy‐interlayers dehydroxylate like crystalline Al(OH) 3 phases (gibbsite, bayerite, nordstrandite). These phases show the main dehydroxylation peak at 280–400°C accompanied with their transformation to γ‐AlO(OH) (γ‐boehmite) and a second minor dehydroxylation peak of γ‐boehmite at 500–540°C, forming λ‐Al 2 O 3 ( Digne et al, ; Kloprogge et al, ).…”

Section: Identification Of Himsmentioning

confidence: 99%

“…In contrast, HIMs occupied by Al oligomers (hydroxy-interlayers) may keep the same behavior after cation exchange or solvation. Dehydroxylation of these Al oligomers occurs by heating to 350-550°C, resulting in a partial collapse of these layers to approximately 1.0-1.3 nm (Barnhisel and Bertsch, 1989;Dietel et al, 2019a). However, interlayer expansion after glycerol solvation or complete collapse or both occurred after heating, when interlayer Al was previously removed (Matsue and Wada, 1988;Barnhisel and Bertsch, 1989).…”

Section: Structure Of Himsmentioning

confidence: 99%

“…Low pH promotes the release of Al 3+ from silicates and thus the mobility of Al (Aoudjit et al, 1996) so that dissolved Al 3+ is provided for intercalation in expandable 2:1 phyllosilicates by cation exchange (Dixon and Jackson, 1962). These intercalated, yet exchangeable Al 3+ ions then polymerize to a certain degree, forming oligomers (Dietel et al, 2019a). Jackson (1965) called the process of accumulation of interlayer Al 'aluminization' and 'alumination of silicates'.…”

Section: Structure Of Himsmentioning

confidence: 99%

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Review Article. What are the nature and formation conditions of hydroxy‐interlayered minerals (HIMs) in soil?

Georgiadis

Dietel

Dohrmann

et al. 2019

J. Plant Nutr. Soil Sci.

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Primary minerals of the parent material undergo weathering during the formation of terrestrial soils to varying extent. As a result, secondary minerals develop, which comprise, among many others, hydroxy-interlayered minerals (HIMs). These minerals have formed by interlayering of hydroxy-metal complexes (especially of Al 3+ , also Mg 2+ , Fe 2+/3+ ) into micas, expansible 2:1 phyllosilicates and forming oligomers, or by weathering of primary chlorite. The degree of interlayer filling and the stability of these fillings affect several physico-chemical soil properties, for instance the cation exchange capacity. Although many studies have been conducted on formation, occurrence, and properties of HIMs in soil during the last decades, several challenges still exist. These challenges include analytical identification and quantification of HIMs in soil, the nature of the interlayer filling and the identification of favorable conditions in soil for the formation of HIMs. In order to deepen the understanding of formation, properties, and fate of HIMs in soil, we critically reviewed the available literature. Based on the review, we recommend using a new structural model that enables quantification of hydroxy-interlayered smectite in soil by X-ray diffractometry, laboratory experiments on the formation and preservation of different types of interlayers and considering the temporal and spatial dimension of the formation of HIMs in soil in more detail.

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Section: Structure Of Himssupporting

confidence: 74%

Section: The Controversy About the Origin And Chemical Nature Of Intementioning

confidence: 70%

Section: Identification Of Himsmentioning

confidence: 99%

Section: Structure Of Himsmentioning

confidence: 99%

Section: Structure Of Himsmentioning

confidence: 99%

See 3 more Smart Citations

Review Article. What are the nature and formation conditions of hydroxy‐interlayered minerals (HIMs) in soil?

Georgiadis

Dietel

Dohrmann

et al. 2019

J. Plant Nutr. Soil Sci.

Self Cite

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Crystal structure of a new high-performance magnesium slag desulfurizer modified by quenching hydration

Han²,

Guo

et al. 2021

J Mater Cycles Waste Manag

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Mineralogical and Elemental Trends in Regolith on Historically Managed Sites in the southeastern United States Piedmont

Schroeder

Austin

Thompson

et al. 2022

Clays and clay miner.

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The deep regolith of the southeastern United States has undergone rapid erosion in the last two centuries due to intensive agricultural practices, which has altered the landscape and its inherent fertility. Parent material, landscape position, and land use are important factors in controlling the mineral and elemental composition of soil profiles. Independent quantitative X-ray diffraction (QXRD) and whole-rock chemical analysis of eight weathering profiles agreed well and allow mineral reaction pathways to be constrained as particles are conveyed in the subsurface. QXRD analysis of saprolite, argillic, and soil A-horizons in the profiles highlights the imprint of bedrock on the regolith, which includes Neoproterozoic meta-tonalitic to meta-granodioritic and Paleozoic meta-granitic to biotite- and amphibolite-gneissic lithologies. Also, aeolian input slightly influenced A-horizon composition. The clay mineral assemblage is dominated by kaolinite, but profiles differ in the amount of interstratified clay minerals, halloysite, hematite, goethite, and gibbsite. Rare-earth element totals vary between 30 and 1048 ppm and are generally correlated positively with clay and clay mineral content. Eu and Ce anomalies reflect parent rocks and subsequent hydrolysis and redox history, with trends depending upon landscape position and clay content in the weathering profile. Weathering profiles on a high-order interfluve and those that were actively cultivated have thick argillic horizons (as defined by clay mineral abundance) and are depleted in alkali and alkaline-earth elements. Profiles proximally developed on old-field pine and never-cultivated hardwood forest land do not show large differences in mineral composition trends, whereas profiles on old-field sites with ongoing cultivation exhibit assemblages enriched in clay minerals and (oxyhydr)oxides. Old-field pine sites that were historically eroded by previous cultivation tend to have shallower and thinner argillic horizons, which may well impact critical-zone processes involving gas and water fluxes. This study highlights that mineral compositions of deep regolith, saprolite, and shallow soil horizons are dependent on local geomorphology (i.e. watershed- and hillshed-orders). Quantifying soil and regolith compositional trends across the landscape is a prerequisite for determining rates of chemical and physical erosion on human and geologic time scales.

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Crystal structure model development for soil clay minerals – I. Hydroxy-interlayered smectite (HIS) synthesized from bentonite. A multi-analytical study

Cited by 14 publications

References 55 publications

Review Article. What are the nature and formation conditions of hydroxy‐interlayered minerals (HIMs) in soil?

Review Article. What are the nature and formation conditions of hydroxy‐interlayered minerals (HIMs) in soil?

Crystal structure of a new high-performance magnesium slag desulfurizer modified by quenching hydration

Mineralogical and Elemental Trends in Regolith on Historically Managed Sites in the southeastern United States Piedmont

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