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In situ Observation of Radicals and Molecular Products During Lignin Pyrolysis
ChemSusChem, 2014AbstractLignin pyrolysis is a promising method for the sustainable production of phenolic compounds from biomass. However, detailed knowledge about the radicals involved in this process and their influence on the molecular products is missing. Herein, we report on the pyrolysis of hard‐ and softwood Klason lignins under inert gas conditions in a ...
Christian, Bährle +4 more
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In Situ Methylation of Nucleic Acids Using Pyrolysis/Mass Spectrometry
Rapid Communications in Mass Spectrometry, 1996Curie-point pyrolysis/triple quadrupole mass spectrometry (Py/MS/MS) has been used with tetramethylammonium hydroxide (TMAH) to conduct in situ methylation of nucleic acid bases. Nitrogen bases in free nucleotides, oligonucleotides, calf thymus DNA and whole bacterial cells reacted in situ during pyrolysis with TMAH to form the methylated bases ...
C, Abbas-Hawks +2 more
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Analysis of proteinaceous binders by in-situ pyrolysis and silylation
Chromatographia, 2003Pyrolysis coupled with gas chromatography and mass spectrometry (Py-GC-MS) is a useful technique for rapid characterization of the organic materials used in art. In the characterization of proteinaceous binders fragments from pyrolysis are of low intensity. Milk, casein, and glue, for example, are sometimes difficult to detect. In the work discussed in
G. Chiavari +5 more
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Renewable Energy, 2021
Abstract Catalytic conversion of pyrolysis vapor from biomass was performed over CeO2 catalysts to produce ketones. Thermogravimetric-gas chromatography/mass spectrometry (TG-GC/MS) and TG-MS were applied to understand the distribution of pyrolysis vapors from various biomass including rape straw, poplar, cypress and bagasse.
Shanshan Shao +6 more
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Abstract Catalytic conversion of pyrolysis vapor from biomass was performed over CeO2 catalysts to produce ketones. Thermogravimetric-gas chromatography/mass spectrometry (TG-GC/MS) and TG-MS were applied to understand the distribution of pyrolysis vapors from various biomass including rape straw, poplar, cypress and bagasse.
Shanshan Shao +6 more
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Fuel, 2018
Abstract Baiyinhua coal was subjected to catalytic pyrolysis over HZSM-5 and Ni-modified HZSM-5 (Ni/HZSM-5) with a novel pyrolysis time-of-flight mass spectrometers (Py-TOF-MS) equipped with vacuum ultraviolet photoionization (VUVPI). The soft ionization of VUVPI allowed the detection of volatile organic compounds.
Zhiwei Shi +5 more
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Abstract Baiyinhua coal was subjected to catalytic pyrolysis over HZSM-5 and Ni-modified HZSM-5 (Ni/HZSM-5) with a novel pyrolysis time-of-flight mass spectrometers (Py-TOF-MS) equipped with vacuum ultraviolet photoionization (VUVPI). The soft ionization of VUVPI allowed the detection of volatile organic compounds.
Zhiwei Shi +5 more
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Journal of Analytical and Applied Pyrolysis, 1995
Abstract Lignin, a major biopolymer in vascular plants, is shown to undergo thermochemolysis reactions when subjected to flash pyrolysis with in situ methylation using tetramethylammonium hydroxide. The product distribution, composed of methylated lignin monomers, implies that the thermochemolysis involves cleavage of the β-O-4 ether bonds in the ...
Daniel E. McKinney +4 more
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Abstract Lignin, a major biopolymer in vascular plants, is shown to undergo thermochemolysis reactions when subjected to flash pyrolysis with in situ methylation using tetramethylammonium hydroxide. The product distribution, composed of methylated lignin monomers, implies that the thermochemolysis involves cleavage of the β-O-4 ether bonds in the ...
Daniel E. McKinney +4 more
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In-Situ Catalytic Pyrolysis of Dealkaline Lignin Over MMZ-Hβ
Journal of Nanoscience and Nanotechnology, 2017In-Situ catalytic pyrolysis of dealkaline lignin (DL) over MMZ-Hβ was performed using a pyrolyzergas chromatography/mass spectroscopy for the first time. Non-catalytic pyrolysis of DL mainly produced large amounts of phenolics such as mono-phenol, alkylphenols, guaiacols, eugenols, and vanillin.
Joung-Min, Kim +7 more
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In situ infrared observation of the pyrolysis process of carbon aerogels
Journal of Non-Crystalline Solids, 1998Abstract Carbon aerogels are generated by a pyrolytic transformation of organic recorcinol formaldehyde aerogels in an inert atmosphere at temperatures above 600°C. Transmittance and emissivity in the infrared were measured between 1.4 and 18.0 μm using a Bruker IFS 66v spectrometer with an attached heatable transmittance/emissivity module which can ...
J. Kuhn +4 more
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In-situ imaging of RTV silicone pyrolysis
AIAA AVIATION 2023 Forum, 2023Collin Foster +2 more
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In situ catalytic upgrading of pyrolysis vapours from vacuum pyrolysis of rape straw over La/MCM-41
Journal of Analytical and Applied Pyrolysis, 2019Abstract By combining the large pore size of MCM-41 and the adjustable acid property of La, La/MCM-41 catalysts with La loading mass fractions of 1%, 5% and 10% were prepared and used in the catalytic upgrading of pyrolysis vapours from vacuum pyrolysis of rape straw to obtain high-value bio-oil.
Xiaohua Li +4 more
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