✦ LIBER ✦

Sulfanes: A new solution for sulphur disposal

✍ Scribed by Alberto de Angelis; Cristina Flego; Wallace O' Neil Parker Jr.; Paolo Pollesel

Publisher: American Institute of Chemical Engineers
Year: 2010
Tongue: English
Weight: 251 KB
Volume: 29
Category: Article
ISSN: 1944-7442
DOI: 10.1002/ep.10425

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✦ Synopsis

Abstract

Huge quantities of sulphur are yielded as by‐products in the oil and gas industry. Disposal raises a relevant environmental issue. Sulfanes, H~2~S~n~ (n > 2), could be the ideal molecular form for sulphur disposal. They are up to 99% wt. made of sulphur and being liquid can be pumped into geological structures, even at room temperature. Since sulfanes can be synthesized only at low yield (<1%) by direct reaction between H~2~S and sulphur, we investigated a new amine‐catalyzed synthesis. Using aliphatic long‐chained amines as catalysts, it is possible to obtain sulfanes by direct H~2~S and sulphur reaction in almost quantitative yield. Structures of the sulfanes formed during this new reaction were studied by GC‐MS, LC‐MS and ^1^H NMR, to investigate the nature of the complexes formed between amine and sulfane. © 2010 American Institute of Chemical Engineers Environ Prog, 2010

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