Recent Developments in the Procedures Used at the Sscer Laboratory for the Routine Preparation of Lithium Carbide
| Autor: | Vadim Skripkin, N. Kovaliukh |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
010506 paleontology
Archeology 060102 archaeology Extraction (chemistry) Metallurgy chemistry.chemical_element 06 humanities and the arts Chemical reactor Alkali metal 01 natural sciences Carbide chemistry.chemical_compound chemistry General Earth and Planetary Sciences 0601 history and archaeology Sample preparation Lithium Pyrolysis 0105 earth and related environmental sciences Nuclear chemistry Lithium carbide |
| Zdroj: | Scopus-Elsevier ResearcherID |
| ISSN: | 1945-5755 0033-8222 |
| DOI: | 10.1017/s0033822200018063 |
| Popis: | In this paper we describe and discuss the advantages from improvements in equipment design and operating procedures developed at the State Scientific Centre of Environmental Radiogeochemistry (SSCER) laboratory in Kiev. Two experimental areas are considered, viz.1. The direct chemisorption into a lithium alloy of carbonaceous gases produced by the controlled thermal degradation (pyrolysis) of organic materials under vacuum. This approach offers the advantage of a single stage, highly efficient and economical procedure for the production of lithium carbide. It is applicable for most types of sample material encountered in routine dating work and including organic detritus dispersed in a highly (up to 95% by weight) mineral matrix and/or carbonates. Bone collagen can also be processed without the need for its prior extraction and purification.2. A conical thin walled reaction vessel for achieving improved and reproducible recoveries in the production of lithium carbide from CO2gas. This apparatus allows a much improved control over the surface dependent reaction in instances where there is no option other than the direct interaction of molten lithium with prepared CO2 gas. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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