期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 53, 期 30, 页码 7740-7744出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201404537
关键词
combustion; gas-phase chemistry; mass spectrometry; polycyclic aromatic hydrocarbons; radicals
资金
- US Department of Energy, Basic Energy Sciences [DE-FG02-03ER15411]
- Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy through the Chemical Sciences Division [DE-AC02-05CH11231]
For almost half a century, polycyclic aromatic hydrocarbons (PAHs) have been proposed to play a key role in the astrochemical evolution of the interstellar medium (ISM) and in the chemistry of combustion systems. However, even the most fundamental reaction mechanism assumed to lead to the simplest PAH naphthalene-the hydrogen abstraction-acetylene addition (HACA) mechanism-has eluded experimental observation. Here, by probing the phenylacetylene (C8H6) intermediate together with naphthalene (C10H8) under combustion-like conditions by photo-ionization mass spectrometry, the very first direct experimental evidence for the validity of the HACA mechanism which so far had only been speculated theoretically is reported.
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