Optical and mass spectrometric study of the pyrolysis gas of wood particles

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Standard

Optical and mass spectrometric study of the pyrolysis gas of wood particles. / Brackmann, Christian; Aldén, Marcus; Bengtsson, Per-Erik; Davidsson, K O; Pettersson, Jan B C.

I: Applied Spectroscopy, Vol. 57, Nr. 2, 2003, s. 216-222.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Harvard

APA

CBE

MLA

Vancouver

Author

RIS

TY - JOUR

T1 - Optical and mass spectrometric study of the pyrolysis gas of wood particles

AU - Brackmann, Christian

AU - Aldén, Marcus

AU - Bengtsson, Per-Erik

AU - Davidsson, K O

AU - Pettersson, Jan B C

PY - 2003

Y1 - 2003

N2 - A detailed experimental investigation has been made of the pyrolysis-the first step in biomass combustion-of single birchwood particles. In addition to mass spectrometric and gravimetric analysis, the pyrolysis volatiles were characterized by different optical techniques. Absorption measurements showed a nearly featureless absorption in the ultraviolet spectral region with a continuously stronger absorption for shorter wavelengths. Using different excitation wavelengths, laser-induced fluorescence measurements revealed generally broad spectra in the spectral region from 300-500 nm, which are characteristic spectral signatures for larger hydrocarbons. The optical data were monitored at different times in the pyrolysis process of the particles and compared with the results from the mass spectrometric and gravimetric analysis. The sensitivity of the optical techniques for differentiation between specific molecules was rather low, although formaldehyde could be observed both in absorption and fluorescence spectra. Laser-induced fluorescence measurements were also made for two-dimensional visualization of the pyrolysis volatiles; emitted from heated birchwood particles, indicating much higher flows along the fiber direction than across.

AB - A detailed experimental investigation has been made of the pyrolysis-the first step in biomass combustion-of single birchwood particles. In addition to mass spectrometric and gravimetric analysis, the pyrolysis volatiles were characterized by different optical techniques. Absorption measurements showed a nearly featureless absorption in the ultraviolet spectral region with a continuously stronger absorption for shorter wavelengths. Using different excitation wavelengths, laser-induced fluorescence measurements revealed generally broad spectra in the spectral region from 300-500 nm, which are characteristic spectral signatures for larger hydrocarbons. The optical data were monitored at different times in the pyrolysis process of the particles and compared with the results from the mass spectrometric and gravimetric analysis. The sensitivity of the optical techniques for differentiation between specific molecules was rather low, although formaldehyde could be observed both in absorption and fluorescence spectra. Laser-induced fluorescence measurements were also made for two-dimensional visualization of the pyrolysis volatiles; emitted from heated birchwood particles, indicating much higher flows along the fiber direction than across.

KW - spectrometry

KW - mass

KW - laser-induced fluorescence

KW - wood pyrolysis

KW - optical spectroscopy

U2 - 10.1366/000370203321535141

DO - 10.1366/000370203321535141

M3 - Article

VL - 57

SP - 216

EP - 222

JO - Applied Spectroscopy

T2 - Applied Spectroscopy

JF - Applied Spectroscopy

SN - 1943-3530

IS - 2

ER -