Fourier transform emission spectroscopy of the jet‐cooled CCN free radical

Novel bio-based composites were developed from maleate castor oil (MACO) and lignin through free radical initiated copolymerization between MACO and diluent monomer styrene(St). The morphology and structure of the composites were characterized by Fourier transform infrared spectroscope (FTIR) and scanning electron microscope (SEM). The mechanical and thermal behaviors of the composites were investigated, which showed the incorporation of a little of lignin in the castor oil based polymer can enhance the tensile properties of the matrix polymer greatly. This work provides a facile route to prepare bio-based composite materials from castor oil and lignin and can be extended to prepare other bio-based materials from reproducible resources.

Download Full-text

Reduction of Selected Metal Oxides in a Thermal Plasma Produced by a Nontransferred ARC Torch

MRS Proceedings ◽

10.1557/proc-98-359 ◽

1987 ◽

Vol 98 ◽

Cited By ~ 2

Author(s):

Brent A. Detering ◽

James A. Batdorf ◽

Chien M. Wai

Keyword(s):

Thermal Decomposition ◽

Fourier Transform ◽

Flow Field ◽

Emission Spectroscopy ◽

Plasma Plume ◽

Particle Morphology ◽

Arc Plasma ◽

Plasma Arc ◽

Transform Method ◽

Oxide Particles

ABSTRACTPlasma flow field temperatures are determined in a nontransferred arc plasma using emission spectroscopy. This technique is then utilized to identify thermal decomposition and reduction products produced in the plasma plume when metal oxide particles are injected into the plasma arc. The processed particles are then studied using AAS, SEM, EDS and XRD to characterize the chemical changes that have occurred in the particles. A Fourier transform method is used to study changes in particle morphology.

Download Full-text

Time-resolved Fourier transform infrared emission spectroscopy of He2 produced by a pulsed discharge

Chemical Physics Letters ◽

10.1016/j.cplett.2003.11.025 ◽

2004 ◽

Vol 383 (3-4) ◽

pp. 256-260 ◽

Cited By ~ 8

Author(s):

Yukio Hosaki ◽

Svatopluk Civiš ◽

Kentarou Kawaguchi

Keyword(s):

Fourier Transform ◽

Emission Spectroscopy ◽

Fourier Transform Infrared ◽

Infrared Emission ◽

Pulsed Discharge ◽

Time Resolved ◽

Infrared Emission Spectroscopy

Download Full-text

Fourier Transform Emission Spectroscopy of theA′3Φ–X3Φ System of CoH

Journal of Molecular Spectroscopy ◽

10.1006/jmsp.1996.0001 ◽

1996 ◽

Vol 175 (1) ◽

pp. 1-6 ◽

Cited By ~ 20

Author(s):

R.S. Ram ◽

P.F. Bernath ◽

S.P. Davis

Keyword(s):

Fourier Transform ◽

Emission Spectroscopy

Download Full-text

Fourier Transform Infrared Emission Spectroscopy of theC4Δ–X4Φ System of ZrCl

Journal of Molecular Spectroscopy ◽

10.1006/jmsp.1997.7446 ◽

1997 ◽

Vol 186 (2) ◽

pp. 335-348 ◽

Cited By ~ 19

Author(s):

R.S. Ram ◽

P.F. Bernath

Keyword(s):

Fourier Transform ◽

Emission Spectroscopy ◽

Fourier Transform Infrared ◽

Infrared Emission ◽

Infrared Emission Spectroscopy

Download Full-text

HNCO-based synthesis of formamide in planetary atmospheres

Astronomy and Astrophysics ◽

10.1051/0004-6361/201833003 ◽

2018 ◽

Vol 616 ◽

pp. A150 ◽

Cited By ~ 13

Author(s):

M. Ferus ◽

V. Laitl ◽

A. Knizek ◽

P. Kubelík ◽

J. Sponer ◽

...

Keyword(s):

Molecular Dynamics ◽

Fourier Transform ◽

Ab Initio ◽

Molecular Dynamics Simulations ◽

Emission Spectroscopy ◽

Planetary Atmospheres ◽

Infrared Emission ◽

Ab Initio Molecular Dynamics ◽

Isocyanic Acid ◽

Dynamics Simulations

Time-resolved Fourier transform infrared emission spectroscopy, Fourier transform absorption infrared spectroscopy, and high-resolution UV–ViS emission spectroscopy have been used to characterize the chemistry of isocyanic acid (HNCO) under glow discharge conditions in planetary atmospheres. HNCO mixtures (i.e., composed of di-hydrogen or ammonia) have been investigated in order to unveil the possible reaction pathways leading to the synthesis of the key prebiotic molecule formamide (HCONH2), upon planetary atmospheres containing isocyanic acid in presence of di-hydrogen and, separately, of ammonia. In addition, ab initio molecular dynamics simulations coupled with a modern metadynamics technique have been performed in order to identify the most likely chemical pathways connecting HNCO to formamide. It turned out that the direct hydrogenation of HNCO is thermodynamically favored. Incidentally, the experimental results – supplied by a simplified kinetic model – also proved the favorability of the reaction HNCO + H2→ HCONH2which, moreover, spontaneously takes place in unbiased ab initio molecular dynamics simulations carried out under the effect of intense electric fields.

Download Full-text