CN
Search Within
177717
Applied Filters:
Keyword:'177717'
Showing 1-30 of 32 results for "177717" within Papers
John M Simmie et al.
The journal of physical chemistry. A, 115(32), 8877-8888 (2011-06-18)
The initial steps in the thermal decomposition of 2,5-dimethylfuran are identified as scission of the C-H bond in the methyl side chain and formation of β- and α-carbenes via 3,2-H and 2,3-methyl shifts, respectively. A variety of channels are explored
Simone M Charles et al.
Environmental science & technology, 42(4), 1324-1331 (2008-03-21)
Emissions of particulate matter (PM) and a broad suite of target volatile organic compounds (VOCs) in total, main-stream (MS) and side-stream (SS) smoke emissions are measured for six types of commercial cigarettes. The suitability of 2,5-dimethyl furan (DMF) as a
John M Simmie et al.
ChemSusChem, 6(1), 36-41 (2012-12-21)
The rapid development in methods for transforming non-edible biomass into platform chemicals and fuels has accelerated over recent years. However, the determination of whether these 'next-generation' biofuels perform in a satisfactory manner in engines, turbines and burners has lagged behind.
Joseph B Binder et al.
Journal of the American Chemical Society, 131(5), 1979-1985 (2009-01-23)
Lignocellulosic biomass is a plentiful and renewable resource for fuels and chemicals. Despite this potential, nearly all renewable fuels and chemicals are now produced from edible resources, such as starch, sugars, and oils; the challenges imposed by notoriously recalcitrant and
J J B N Van Berkel et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 861(1), 101-107 (2007-12-07)
Analysis of exhaled air leads to the development of fast accurate and non-invasive diagnostics. A comprehensive analysis of the entire range of volatile organic compounds (VOCs) in exhaled air samples will enable the identification of VOCs unique for certain patient
5-hydroxymethylfurfural hydrodeoxygenation to 2, 5-dimethylfuran in continuous-flow system over Ni on nitrogen-doped carbon
Francesco B et al.
Sustainable Chemistry and Pharmacy, 1, 9-9 (2020)
Xinhui Bi et al.
Chemosphere, 61(10), 1512-1522 (2005-06-25)
Cigarette smoke constituents are worthy of concern and characterized as carcinogens. Different experiment conditions may affect the environmental tobacco smoke (ETS) constituents. A study was undertaken in a 75.5-m3 spare office to evaluate ETS constituents in a real environment. Thirty-four
Xianghong Qian
The journal of physical chemistry. A, 115(42), 11740-11748 (2011-09-16)
Car-Parrinello based ab initio molecular dynamics (CPMD) coupled with metadynamics (MTD) simulations were carried out to investigate the mechanism and energetics for acid-catalyzed β-d-glucose conversion to 5-hydroxymethylfurfurl (HMF) in water. HMF is a critical intermediate for biomass conversion to biofuels.
Sudipta De et al.
ChemSusChem, 5(9), 1826-1833 (2012-05-29)
The one-pot conversion of lignocellulosic and algal biomass into a liquid fuel, 2,5-dimethylfuran (DMF), has been achieved by using a multicomponent catalytic system comprising [DMA]⁺ [CH₃SO₃]⁻ (DMA=N,N-dimethylacetamide), Ru/C, and formic acid. The synthesis of DMF from all substrates was carried
Jimmy Phuong et al.
Environmental and molecular mutagenesis, 53(6), 478-487 (2012-06-26)
Although not mutagenic by Ames test, 2,5-dimethylfuran (DMF), a leading biofuel candidate, was found to induce chromosomal damage in cultured murine cells, suggesting that it may be genotoxic. We sought to prioritize the environmental and biological impacts of using DMF
Mika Shiramizu et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 17(44), 12452-12457 (2011-09-17)
Polyethylene terephthalate (PET) is a polymeric material with high global demand. Conventionally, PET is produced from fossil-fuel-based materials. Herein, we explored the feasibility of a sustainable method for PET production by using solely bio-renewable resources. Specifically, 2,5-dimethylfuran (derived from lignocellulosic
One-Pot Generation of Functionalized Benzynes from Readily Available 2-Hydroxyphenylboronic Acids
Ikawa T, et al.
The Journal of Organic Chemistry, 85(5) (2020)
David Feller et al.
The journal of physical chemistry. A, 116(47), 11768-11775 (2012-11-06)
A high-level ab initio thermochemical technique, known as the Feller-Petersen-Dixon method, is used to calculate the total atomization energies and hence the enthalpies of formation of 2,5-dimethylfuran, 2-methylfuran, and furan itself as a means of rationalizing significant discrepancies in the
Chemical engineering: hybrid routes to biofuels.
Lanny D Schmidt et al.
Nature, 447(7147), 914-915 (2007-06-22)
Dondeena G Bradley et al.
Journal of agricultural and food chemistry, 54(16), 6016-6020 (2006-08-03)
To protect the nutrient and flavor stability of milk under light, the effects of 0, 0.01, 0.03, and 0.05 M 1,4-diazabicyclo[2,2,2]octane (DABCO) and 2,5-dimethylfuran (DMF) on the riboflavin photosensitized oxidation of milk were studied. The oxidation of milk was studied
Maryam Chaichi et al.
Food additives & contaminants. Part B, Surveillance, 8(1), 73-80 (2014-10-31)
In this study, the levels of furan, 2-methylfuran, 2,5-dimethylfuran, vinyl furan, 2-methoxymethyl-furan and furfural in different coffee products were evaluated. Simultaneous determination of these six furanic compounds was performed by a head space liquid-phase micro-extraction (HS-LPME) method. A total of
Yuriy Román-Leshkov et al.
Nature, 447(7147), 982-985 (2007-06-22)
Diminishing fossil fuel reserves and growing concerns about global warming indicate that sustainable sources of energy are needed in the near future. For fuels to be useful in the transportation sector, they must have specific physical properties that allow for
Michele Fromowitz et al.
Environmental and molecular mutagenesis, 53(6), 488-491 (2012-06-26)
2,5-Dimethylfuran (DMF) is being considered as a potential green transportation biofuel, but there is limited information about its toxicity and safety. We examined DMF toxicity in the bone marrow using a murine in vitro erythropoietic micronucleus assay and found that
Monica Alonso et al.
Environmental science & technology, 44(21), 8289-8294 (2010-10-06)
Contamination by environmental tobacco smoke (ETS) on premises where smoking is permitted is evaluated. Although all target VOCs evaluated show significant differences between smoking and nonsmoking indoors, the results obtained indicate that 2,5-dimethylfuran is the most appropriate and effective marker
Jae Yi Sim et al.
Chemical communications (Cambridge, England), (47)(47), 5064-5065 (2007-12-01)
(+)-cis-Nemorensic acid was synthesized from a chiral Diels-Alder adduct prepared by a catalytic enantioselective Diels-Alder reaction with 2,5-dimethylfuran and 2,2,2-trifluoroethyl acrylate.
Baptiste Sirjean et al.
The journal of physical chemistry. A, 117(7), 1371-1392 (2013-01-19)
A detailed kinetic model describing the oxidation of 2,5-dimethylfuran (DMF), a potential second-generation biofuel, is proposed. The kinetic model is based upon quantum chemical calculations for the initial DMF consumption reactions and important reactions of intermediates. The model is validated
Production of renewable p-xylene from 2, 5-dimethylfuran via Diels-Alder cycloaddition and dehydrative aromatization reactions over silica- alumina aerogel catalysts
Wijaya YP, et al.
Catalysis Communications, 70, 12-16 (2015)
Albert Sánchez et al.
Organic & biomolecular chemistry, 10(42), 8478-8483 (2012-09-26)
[2,5-Dimethylfuran]-protected maleimides were placed at both internal positions and the 3'-end of oligonucleotides making use of solid-phase synthesis procedures. A new phosphoramidite derivative and a new solid support incorporating the protected maleimide moiety were prepared for this purpose. In all
Sara M Aschmann et al.
The journal of physical chemistry. A, 118(2), 457-466 (2014-01-02)
Products of the gas-phase reactions of OH radicals with furan, furan-d4, 2- and 3-methylfuran, and 2,3- and 2,5-dimethylfuran have been investigated in the presence of NO using direct air sampling atmospheric pressure ionization tandem mass spectrometry (API-MS and API-MS/MS), and
Nuan P Cheah et al.
Toxicology in vitro : an international journal published in association with BIBRA, 27(3), 1072-1081 (2013-02-19)
Tobacco smoke consists of thousands of harmful components. A major class of chemicals found in tobacco smoke is formed by aldehydes, in particular formaldehyde, acetaldehyde and acrolein. The present study investigates the gene expression changes in human lung alveolar epithelial
Qiongyan Zhong et al.
Journal of environmental monitoring : JEM, 9(5), 440-448 (2007-05-12)
The adaptation of a portable gas chromatograph (GC) prototype with several unique design features to the determination of vapor-phase markers of environmental tobacco smoke (ETS) is described. This instrument employs a dual-stage adsorbent preconcentrator, two series-coupled separation columns that can
Albert Sánchez et al.
Organic letters, 13(16), 4364-4367 (2011-07-28)
The reaction of maleimide-containing compounds with 2,5-dimethylfuran gives a mixture of exo and endo isomers from which the exo cycloadduct can be easily isolated taking advantage of its stability in concentrated aqueous ammonia. Bifunctional compounds incorporating a dimethylfuran-protected maleimide (exo
One-flow syntheses of diverse heterocyclic furan chemicals directly from fructose via tandem transformation platform
Guan-Young J et al.
NPG Asia materials, 7, e173-e173 (2015)
María Cecilia Becerra et al.
Journal of photochemistry and photobiology. B, Biology, 76(1-3), 13-18 (2004-10-19)
Oxygen consumption by Staphylococcus aureus ATCC 29213 sensitive to ciprofloxacin was determined with an oxygen selective electrode. Increase in the O(2) consumption was observed with 0.45 micromL(-1) ciprofloxacin while higher concentrations gave rise to a reduction of O(2) consumption. Resistant
Baptiste Sirjean et al.
Physical chemistry chemical physics : PCCP, 15(2), 596-611 (2012-11-28)
The unimolecular decomposition of 2,5-dimethylfuran (DMF), a promising next-generation biofuel, was studied at the CBS-QB3 level of theory. As most of its decomposition routes remain unknown, a large number of pathways were explored: initial C-H bond fission, biradical ring opening
Page 1 of 2