Scopus
YÖKSİS Eşleşti
A mass spectrometric investigation of isomers of butane
Rapid Communications in Mass Spectrometry · Nisan 2012
YÖKSİS Kayıtları
A mass spectrometric investigation of isomers of butane
Rapid Communications in Mass Spectrometry · 2012 SCI
PROFESÖR HAZİRET DURMUŞ →
Makale Bilgileri
DergiRapid Communications in Mass Spectrometry
Yayın TarihiNisan 2012
Cilt / Sayfa26 · 893-905
Scopus ID2-s2.0-84858028203
Özet
RATIONALE Butane is an important industrial chemical in which photo-processes are very important for the initiation of reactions. Recent advances in nanosecond pulsed laser technology have led to high laser intensities being available to researchers to enable these photo-processes to be studied in compounds such as butane. METHODS The photo-decomposition, dissociation and combustion mechanisms in the neutral butane molecule have been studied in detail, by investigating the multiphoton (MP) dissociative ionisation of its n- and i-isomers, using a time-of-flight mass spectrometer connected to a high power nanosecond laser system. The laser used was a Nd:Yag with a 5 ns pulse width operated at the fundamental wavelength (1064 nm) and the doubled and tripled wavelengths (532 nm and 355 nm). The fragmentation patterns for the isomers were determined for the three wavelengths as a function of laser intensity. Similar laser intensities of between 1010 and 10 13 W/cm2 were used at the three wavelengths: 1064, 532 and 355 nm. RESULTS The mass spectra of each isomer of the butane molecule display a very weak molecular ion and are dominated by fragment ion peaks. The degree of fragmentation increases as the laser intensity increases. CONCLUSIONS Depending on the wavelength some significant differences in the mass spectra of the two isomers were detected and it has been concluded that the isomerisation of i-butane to n-butane is a process which is faster than the duration of the laser pulse used. Copyright © 2012 John Wiley & Sons, Ltd.
Yazarlar (5)
1
Tuǧbahan Yilmaz Aliç
2
Hamdi Şükür Kılıç
3
Haziret Durmuş
4
Mevlut Dogan
5
Kenneth William David Ledingham
Kurumlar
Afyon Kocatepe Üniversitesi
Afyonkarahisar Turkey
Selçuk Üniversitesi
Selçuklu Turkey
University of Strathclyde
Glasgow United Kingdom
Metrikler
1
Atıf
5
Yazar