GYPSUM GROWTH IN THE PRESENCE OF GROWTH INHIBITORS: A SCANNING FORCE MICROSCOPY STUDY
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.
dc.contributor.author | Bosbach D. | |
dc.contributor.author | Hochella M.F. | |
dc.date.accessioned | 2020-11-20T10:52:42Z | |
dc.date.available | 2020-11-20T10:52:42Z | |
dc.date.issued | 1996 | |
dc.identifier | https://elibrary.ru/item.asp?id=485259 | |
dc.identifier.citation | Chemical Geology, 1996, , 1, 227-236 | |
dc.identifier.issn | 0009-2541 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/19153 | |
dc.description.abstract | The growth inhibiting and habit modifying effect of phosphonic acid derivatives (HEDP, ENTMP) and carboxylates (tartrate, citrate) on gypsum was investigated by in-situ Scanning Force Microscopy (SFM). Kinetic and morphological effects of additives on advancing monolayer steps were imaged. Adsorbed HEDP and ENTMP molecules attach to step edges, which results in a change in step morphology. It is shown that inhibitor concentration and the reactivity of step edges strongly influence the change in step morphology. At low inhibitor concentrations linear steps become jagged, whereas high inhibitor concentrations lead to smoothly curved step edges. On the (010) surface [101] steps are more reactive compared to [001] steps. Therefore [101] steps show the most significant change in step morphology. In-situ experiments in the presence of citrate clearly show reduced growth rates although monolayer steps still appear crystallographically aligned. Ex-situ images of gypsum crystals exposed to tartaric acid reveal that an amorphous coating has been precipitated at high tartrate concentrations, whereas low tartrate concentrations result in jagged or curved steps. In-situ SFM experiments confirm the increased inhibition effect of phosphonic acid derivatives compared to carboxylates. | |
dc.title | GYPSUM GROWTH IN THE PRESENCE OF GROWTH INHIBITORS: A SCANNING FORCE MICROSCOPY STUDY | |
dc.type | Статья |
Files in this item
Files | Size | Format | View |
---|---|---|---|
There are no files associated with this item. |
This item appears in the following Collection(s)
-
ELibrary
Метаданные публикаций с сайта https://www.elibrary.ru