Sign on

SAO/NASA ADS Physics Abstract Service


· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· References in the article
· Citations to the Article (4) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
New gas-hydrate phase: Synthesis and stability of clay methane hydrate intercalate
Authors:
Guggenheim, Stephen; Koster van Groos, August F.
Publication:
Geology, vol. 31, Issue 7, p.653
Publication Date:
07/2003
Origin:
ADS
DOI:
10.1130/0091-7613(2003)031<0653:NGPSAS>2.0.CO;2
Bibliographic Code:
2003Geo....31..653G

Abstract

Intercalated Na-rich montmorillonite methane hydrate was synthesized for the first time. The upper limit of stability for the intercalate in pressure and temperature is parallel to that of methane hydrate but at temperatures that are ˜0.5 1 °C lower than for methane hydrate. The low-temperature stability of the intercalate is at -11.5 ± 3 °C at ˜40 bar, where methane and some H2O are expelled from the region between the silicate layers (interlayer). In contrast, methane hydrates do not dissociate at these low temperatures. We conclude that at conditions similar to where methane hydrate is stable, smectite may intercalate with methane hydrate and provide additional sinks for methane. The limitation in the stability of smectite methane hydrate intercalate at low temperatures suggests that, if present in large quantities, it may release at decreasing temperatures sufficient methane to ameliorate a planetary cooling event.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

  New!

Find Similar Abstracts:

Use: Authors
Title
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints