In clay science, what do d001, basal spacing, interlayer space, interlayer spacing and interlayer distance mean respectively? Could anyone expain them in detail, with a drawing if needed? THANKS IN ADVANCE!
Dear Peixin,
The attached paper with the name Clay 1 gives you a detailed description of interlayer space. The attached second paper with name Clay 2 gives details on interalyer sapcing.For interlayer distance please use the following link: https://www.quantumwise.com/documents/tutorials/latest/Grimme/index.html/chap.graphene.html. For d001 please see the paper with the name Clay 3.
Hoping this will be helpful,
Rafik
Dear Mr. Du,
the 001 values provide you with the basal spacing or layer stacking in a phyllosilicate. It is labeled using the Miller indices (=hkl value). They are determined by x-ray powder defraction and are diagnostic for the three main sheetsilicate groups. The 001 value for kaolinite-group minerals (+serpentine), excluding halloysite is 7 Angstrom, for micaceous sheetsilicates (+talc + pyrophyllite) 10 A and for the smectite-group 14 A (+chlorite). Using polar solvents the smectite group minerals may experience a change in the 001 value or basal spacing to approx. 17 A. The spacing is measured or calculated c . sin beta and shown normally parallel to the b axis. Simply described in a few plain words it is the smallest "homogeneous unit" typical of a phyllosilicate group.
In case of regular or irregular mixed layers there are superstructures whose spacing can simply be described as the "sum of the various basal units" of the principal phyllosilicates contributing to the built-up of m.l.
This was it in brief.
Best regrads
H.G.Dill
Hi, you might find this paper helpful (see attached file):
NOMENCLATURE FOR STACKING IN PHYLLOSILICATES: REPORT OF THE
ASSOCIATION INTERNATIONALE POUR L’ETUDE DES ARGILES (AIPEA)
NOMENCLATURE COMMITTEE FOR 2008 (Guggenheim et al., CCM 2009 vol 57, 134-135) - there is a very good informative drawing there
Dear Dr Harald G. Dill,
I kind of feel you are explaining on the d001 value of the clay mineral very well. And I have a doubt that it's possible that the d001 value of montmorillonite has not changed after cement and fly ash treatment, please kindly explain.
Best regards,
Menglim
Dear Du
In the attached picture, it was found that basal spacing equals to the addition of interlayer space and clay layer.
Thank you for your kind explanation about basal spacing.
However, for montmorillonite clays modified with octadecylamine shows d001value 9.94151 Å and montmorillonite clays modified with octadecylamine plus aminopropyltriethoxysilane shows 11.03041 Å
Could you please give information or explanation about it, why it is happening?
Hi,
The intercalation of these organic molecules in the clays increases the d001! But I find it weird that you have a small value for clay modified with octadecylamine, only! What is the value of d001 for montmorillonite clay, alone?
Best regards
Safia
hi Ma Zhaoyang can you please share the source paper of the image you have shown here
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