Presence of oriented fibers in palygorskite powders and its influence on X-Ray diffractograms

Simple item page
dc.contributor.authorGarcía Rivas, Javier
dc.contributor.authorSúarez Barrios, Mercedes
dc.contributor.authorGarcía Romero, Emilia
dc.contributor.authorSánchez del Río, Manuel
dc.date.accessioned2023-06-16T15:19:47Z
dc.date.available2023-06-16T15:19:47Z
dc.date.issued2020-09-15
dc.description.abstractPalygorskite is a clay mineral whose structure has not been successfully deciphered, even considering the simultaneous presence of the orthorhombic and monoclinic phases within the same sample. An interesting question, which has barely been considered until the moment to explain the difficulty of the resolution of its structure, is whether the fibrous morphology of palygorskite might enhance the presence of possibly oriented fibers which could influence some reflections in random powder diffraction experiments. To observe this influence of orientation, computer simulations considering a slight variation of the structural models proposed by Chisholm (1992) were performed. These simulations were added in different proportions to study the role that certain proportions of oriented fibers play in the resulting diffractograms. The most interesting changes are in the region of interest comprised between 4.5 and 4.0 Å. Different contents in the two palygorskite phases with oriented components were also considered, affecting the resulting simulated diffractograms. The simulations were compared with experimental results, concluding that orientation can play a very important role in the diffractograms, therefore complicating even more the resolution of the structure of this mineral.
dc.description.departmentDepto. de Mineralogía y Petrología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)
dc.description.sponsorshipPortuguese Science and Technology Foundation
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/61360
dc.identifier.doi10.1016/j.clay.2020.105724
dc.identifier.issn0169-1317
dc.identifier.officialurlhttps://www.sciencedirect.com/science/article/pii/S0169131720302891#!
dc.identifier.urihttps://hdl.handle.net/20.500.14352/6370
dc.issue.number105724
dc.journal.titleApplied clay science
dc.language.isoeng
dc.publisherElsevier
dc.relation.projectIDGL2016-77005-R
dc.relation.projectIDUID/Multi/04349/2019
dc.relation.projectIDBL224/ 2018_IST-ID at the C2TN
dc.rights.accessRightsrestricted access
dc.subject.cdu549.62
dc.subject.keywordPalygorskite. X-Ray diffraction
dc.subject.keywordPowder diffraction
dc.subject.keywordFiber diffraction
dc.subject.ucmCristalografía (Geología)
dc.subject.ucmMineralogía (Geología)
dc.subject.unesco2506.11 Mineralogía
dc.titlePresence of oriented fibers in palygorskite powders and its influence on X-Ray diffractograms
dc.typejournal article
dc.volume.number195
dspace.entity.typePublication
relation.isAuthorOfPublicatione039abf0-032e-428b-a0d2-513967a1c0ff
relation.isAuthorOfPublicationb7658e83-41da-46f0-aca8-94370da806bd
relation.isAuthorOfPublication.latestForDiscoverye039abf0-032e-428b-a0d2-513967a1c0ff
Download
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Presence of oriented fibers in palygorskite powders and its influence on.pdf
Size:
3.74 MB
Format:
Adobe Portable Document Format
Download
Collections
Artículos