High-Temperature Syntheses of New, Thermally-Stable Chemical Compounds.
Abstract
Studies of high-temperature reactions for synthesis of new, thermally-stable chemical compounds, or precursors to such compounds, are described. The first part of the program was a survey of the literature for high-temperature reactions (above 500C) which might result in such compounds. On the basis of this initial survey, and on information from continuing literature surveys, the following three studies were undertaken: Synthesis of difluoroacetylene as a precursor to thermally-stable, perfluorinated aliphatic or aromatic polymers; Synthesis of stable organometallic compounds using arcs to ionize the metal constituent; Synthesis of thermally-stable thiophosphonitrilic compounds. Of three different approaches conceived for the synthesis of difluoroacetylene, only pyrolysis of the sodium salt of tetrafluorosuccinic acid appears to have yielded the desired product. The reactions between metals ionized from arc electrodes, and organic liquids circulated past the arc, have failed thus far to yield measurable quantities of organometallic compounds. Reactions between vaporized phosphorus sesquisulfide (P4S3) and nitrogen in an electric arc have yielded several amorphous compounds containing sulfur, phosphorus and nitrogen. One such compound was heated to over 700C in argon with no visible signs of decomposition. A 589-item bibliography on heat-resistant materials is included.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1960
- Accession Number
- AD0855293
Entities
People
- David L. Chamberlain
- F. Alan Ferguson
- Russell C. Phillips
Organizations
- SRI International