Academic literature on the topic 'Methylnaphthalene'

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Journal articles on the topic "Methylnaphthalene"

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Sun, Hao, Kang Sun, Jianchun Jiang, and Zhenggui Gu. "Preparation of 2-Methylnaphthalene from 1-Methylnaphthalene via Catalytic Isomerization and Crystallization." Bulletin of Chemical Reaction Engineering & Catalysis 13, no. 3 (2018): 512. http://dx.doi.org/10.9767/bcrec.13.3.2650.512-519.

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Large amounts of residual 1-methylnaphthalene are generated when 2-methylnaphthalene is extracted from alkyl naphthalene. In order to transform waste into assets, this study proposes a feasible process for preparing 2-methylnaphthalene from 1-methylnaphthalene through isomerization and crystallization. The 1-methylnaphthalene isomerization was carried out in a fixed-bed reactor over mixed acids-treated HBEA zeolite. The results showed that acidic properties of catalysts and reaction temperature were associated with the 2-methylnaphthalene selectivity, yield and catalytic stability. At a high r
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E, Yong Sheng, та Xiao Dan Sun. "A New Method of Separating and Refining β-Methylnaphthalene from Wash Oil". Advanced Materials Research 549 (липень 2012): 225–28. http://dx.doi.org/10.4028/www.scientific.net/amr.549.225.

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This paper introduces the current technology of separating and refining β-methylnaphthalene from wash oil. On this basis, I propose a new production method of β-methylnaphthalene after many experiments. Industrial methylnaphthalene is washed twice with sulfuric acid and is distilled once. The content of β-methylnaphthalene is higher than 96%.The yield is 60%, which is higher than current domestic production levels.
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Liang, Junjie, Qianlong Zhang, Yijun Heng, et al. "Development of a Detailed Chemical Kinetic Model for 1-Methylnaphthalene." Molecules 29, no. 23 (2024): 5660. https://doi.org/10.3390/molecules29235660.

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1-Methylnaphthalene is a critical component for constructing fuel surrogates of diesel and aviation kerosene. However, the reaction pathways of 1-methylnaphthalene included in existing detailed chemical kinetic models vary from each other, leading to discrepancies in the simulation of ignition and oxidation processes. In the present study, reaction classes and pathways involved in the combustion of 1-methylnaphthalene were analyzed, and effects of rate constants of reactions related to 1-methylnaphthalene and its significant intermediates on ignition delay times and species concentration profi
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Chen, Chia-Li, Mary Kacarab, Ping Tang, and David R. Cocker. "SOA formation from naphthalene, 1-methylnaphthalene, and 2-methylnaphthalene photooxidation." Atmospheric Environment 131 (April 2016): 424–33. http://dx.doi.org/10.1016/j.atmosenv.2016.02.007.

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Onyango, Evans O., Anne R. Kelley, David C. Qian, and Gordon W. Gribble. "Syntheses of 1-Bromo-8-methylnaphthalene and 1-Bromo-5-methylnaphthalene." Journal of Organic Chemistry 80, no. 11 (2015): 5970–72. http://dx.doi.org/10.1021/acs.joc.5b00730.

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Selesi, Draženka, Nico Jehmlich, Martin von Bergen, et al. "Combined Genomic and Proteomic Approaches Identify Gene Clusters Involved in Anaerobic 2-Methylnaphthalene Degradation in the Sulfate-Reducing Enrichment Culture N47." Journal of Bacteriology 192, no. 1 (2009): 295–306. http://dx.doi.org/10.1128/jb.00874-09.

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ABSTRACT The highly enriched deltaproteobacterial culture N47 anaerobically oxidizes the polycyclic aromatic hydrocarbons naphthalene and 2-methylnaphthalene, with sulfate as the electron acceptor. Combined genome sequencing and liquid chromatography-tandem mass spectrometry-based shotgun proteome analyses were performed to identify genes and proteins involved in anaerobic aromatic catabolism. Proteome analysis of 2-methylnaphthalene-grown N47 cells resulted in the identification of putative enzymes catalyzing the anaerobic conversion of 2-methylnaphthalene to 2-naphthoyl coenzyme A (2-naphtho
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Greenland, H., JT Pinhey, and S. Sternhell. "Synthesis and Autoxidation of 2,3,4-Trimethylnaphthalen-1-ol and Related Naphthalen-1-ols." Australian Journal of Chemistry 40, no. 2 (1987): 325. http://dx.doi.org/10.1071/ch9870325.

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The oxidation of 2-methylnaphthalene, 1,2-dimethylnaphthalene, 2,3-dimethylnaphthalene, and 1,2,3-trimethylnaphthalene by lead tetraacetate in dichloroacetic acid and chloroform gave fair to low yields of the dichloroacetyl derivatives of 2-methylnaphthalen-1-ol, 3,4-dimethylnaphthalen-1-ol, 2,3-dimethylnaphthalen-1-ol, and 2,3,4-trimethylnaphthalen-1-ol respectively. In the case of 1,3-dimethylnaphthalene, dichloroacetoxylation was not observed, and the only isolated product was the binaphthyl (10). 2,3,4-Trimethylnaphthalen-1-ol, obtained on hydrolysis of the dichloroacetyl derivative, was v
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Shaddix, C. R., K. Brezinsky, and I. Glassman. "Oxidation of 1-methylnaphthalene." Symposium (International) on Combustion 24, no. 1 (1992): 683–90. http://dx.doi.org/10.1016/s0082-0784(06)80084-6.

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Annweiler, Eva, Arne Materna, Michael Safinowski, et al. "Anaerobic Degradation of 2-Methylnaphthalene by a Sulfate-Reducing Enrichment Culture." Applied and Environmental Microbiology 66, no. 12 (2000): 5329–33. http://dx.doi.org/10.1128/aem.66.12.5329-5333.2000.

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ABSTRACT Anaerobic degradation of 2-methylnaphthalene was investigated with a sulfate-reducing enrichment culture. Metabolite analyses revealed two groups of degradation products. The first group comprised two succinic acid adducts which were identified as naphthyl-2-methyl-succinic acid and naphthyl-2-methylene-succinic acid by comparison with chemically synthesized reference compounds. Naphthyl-2-methyl-succinic acid accumulated to 0.5 μM in culture supernatants. Production of naphthyl-2-methyl-succinic acid was analyzed in enzyme assays with dense cell suspensions. The conversion of 2-methy
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Xia, Liang Yan, Zhi Xiang Xia, Wei Tang, Hong Yan Wang, and Meng Xiang Fang. "Hydrogenation of Model Compounds Catalyzed by MCM-41-Supported Nickel Phosphide." Advanced Materials Research 864-867 (December 2013): 366–72. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.366.

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MCM-41 supported nickel phosphide (Ni2P/MCM-41) was prepared by temperature-programmed reduction of the corresponding phosphate. The catalyst activity for hydrodeoxygenation (HDO), hydrodearomatization (HDA), hydrodenitrogenation (HDN) and hydrodesulfurization (HDS) was investigated in a fixed bed reactor. O-cresol HDO, 1-methylnaphthalene HDA, quinoline HDN, dibenzothiophene HDS and simultaneous HDO, HDA, HDN, HDS were respectively tested at different temperatures with constant pressure (6.0 MPa), liquid hourly space velocity (3.0 h-1), hydrogen-to-oil volume ratio (600:1). The results indica
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Dissertations / Theses on the topic "Methylnaphthalene"

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Gerger, Marcus. "Centrifugal Separation of 1-Methylnaphthalene." Thesis, KTH, Skolan för kemivetenskap (CHE), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-206732.

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In this report, modifications and experimental tests with an early stage test rig intended for producing a commercial solution to fractionating pyrolysis oil are described. The idea is to use centrifugal force to separate the formed aerosols from condensible gases with a lower volatility. A stacked disc centrifuge prototype built to work at high temperature was used. The experiment was done with a single component, 1-Methylnaphtalene (1-MN) to evaluate the functionality of the test rig. No separation was achieved, concluding that further work need to be done at different operating parameters w
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Rose, Jamey. "Hydroxylation of 2-methylnaphthalene to 2-methylnaphthoquinone over TI-substituted catalysis." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5192.

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Thesis (MScEng (Process Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Partially oxygenated aromatic compounds, e.g. quinones, hydroquinones and cresols, play a vital role in the fine chemical industry and were initially prepared by stoichiometric oxidation processes that produce toxic products that are hazardous towards the environment. As a result, it was important to investigate environmentally friendly processes for the hydroxylation of aromatic compounds. This resulted in newer methods using Ti-substituted microporous zeolites as catalysts with hydrogen peroxid
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Sivena, Anastassia. "Hydrocracking reaction pathways of 1-methylnaphthalene in a continous fixed-bed reactor." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/29868.

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Trends in the crude oil supply have shown a decline in reserves of conventional oil, which has been offset by increasing volumes of heavy oil. Therefore, hydrocracking has become an increasingly attractive process for upgrading heavy oil fractions. This process, however, presents major challenges that have to be overcome. The present work had two principal aims. The first was to develop a new continuous fixed-bed hydrocracking reactor (CFBR) to conduct long time-on-stream experiments, ranging from 180-360 minutes. Several challenges were faced during the design and construction caused by opera
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Turner, Nicholas. "Quantifying the Toxicity of 1-Methylnaphthalene to the Shallow-Water Coral, Porites divaricata, for Use in the Target Lipid Model." NSUWorks, 2016. http://nsuworks.nova.edu/occ_stuetd/426.

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The proximity of coral reefs to coastal urban areas and shipping lanes predisposes corals to petroleum pollution from multiple sources. Previous research has evaluated petroleum toxicity to coral using a variety of methodologies, including monitoring effects of acute and chronic spills, in situ exposures, and ex situ exposures with both adult and larval stage corals. Variability in toxicant, bioassay conditions, species and other methodological disparities among studies prevents comprehensive conclusions regarding the toxicity of hydrocarbons to corals. This research evaluated the 48-hour toxi
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Hommel, Elizabeth L. "A Broad Bandwith Sum Frequency Generation Spectroscopic Investigation of Organic Liquid Surfaces." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1047303003.

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Wang, Lin Huei, та 王林輝. "Using the hudrogenation of α-methylnaphthalene discuss the about dynamic parameter". Thesis, 1995. http://ndltd.ncl.edu.tw/handle/45874260428424699550.

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Wei, Chen Chih, and 陳志維. "The hydrogenation of 1-methylnaphthalene over Pt/TiO2-ZrO2 d Pd/TiO2-ZrO2." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/57807637152606122928.

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Tsai, Han-Yu, and 蔡涵聿. "Isolation and characterization of 2-methylnaphthalene-degrading marine bacteria from the coastal water of northern Taiwan." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/32892255617984057094.

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碩士<br>國立臺灣大學<br>海洋研究所<br>102<br>Polycyclic aromatic hydrocarbons (PAHs) pollution has attracted much of attention in recent years. The pollutants can enter the human body through water, air or food. Many of the PAHs are carcinogens. They could cause skin cancer, stomach cancer or liver cancer when human expose to PAHs in high concentrations for a long period of time. It was found that many bacteria can use low molecular weight PAHs as single carbon source and convert them into simple substrates in the metabolic pathway. Microbial biodegradation of PAHs can be classified into mineralization, co
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Lee, Tunng-Hsien, and 李東憲. "Study on Photorearrangement of 3-Styrylfurans to Synthesize Methylnaphthalenes in Basic Media." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/hpqd3h.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>99<br>This thesis studies on photorearrangement of 3-styrylfurans to synthesize 2-methylnaphthalenes in basic media. A series of reactants, 3-styrylfurans, was synthesized by Wittig or Wittig-Horner reactions. Irradiation of these reactants in methanol/water (19/1) with 0.09 M KOH or in benzene with 0.018 M ethanol and 0.023 M DBU gives 2-methylnaphthalenes with 20~61% yields. A plausible reaction mechanism of this novel photochemical reaction describes as follow: trans-3-styrylfuran undergoes cis/trans isomerization reaction to give cis-3-styrylfuran. Then 6e photoc
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Books on the topic "Methylnaphthalene"

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United States. Agency for Toxic Substances and Disease Registry. Division of Toxicology. Naphthalene, 1-methylnaphthalene, and 2-methylnaphthalene. Agency for Toxic Substances Disease Registry, Division of Toxicology, Dept. of Health and Human Services, Public Health Service, 2005.

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Hisham, El-Masri, United States. Agency for Toxic Substances and Disease Registry., United States. Environmental Protection Agency., and Syracuse Research Corporation, eds. Toxicological profile for naphthalene, 1-methylnaphthalene, and 2-methylnaphthalene. Agency for Toxic Substances and Disease Registry, 2005.

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Wilhoit, R. C. 1- and 2-methylnaphthalene and dibenzanthracenes. American Petroleum Institute, 1985.

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Methylnaphthalenes: I. 1-methylnaphthalene, 2-methylnaphthalene, II. 2,6-dimethylnaphthalene. VCH, 1992.

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Draft toxicological profile for naphthalene, 1-methylnaphthalene, and 2-methylnaphthalene. Agency for Toxic Substances and Disease Registry, 2003.

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Toxicological profile for naphthalene, 1-methylnaphthalene, and 2-methylnaphthalene: Draft. The Agency, 1993.

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1-And 2-Methylnaphthalene and Dibenzanthracenes (Publication, 724). Amer Petroleum Inst, 1985.

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Book chapters on the topic "Methylnaphthalene"

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Lide, David R. "1-Methylnaphthalene." In Handbook of Organic Solvents. CRC Press, 2024. http://dx.doi.org/10.1201/9781003575191-335.

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Bährle-Rapp, Marina. "Sodium Methylnaphthalene Sulfonate." In Springer Lexikon Kosmetik und Körperpflege. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_9625.

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Bährle-Rapp, Marina. "1-Acetoxy-2-Methylnaphthalene." In Springer Lexikon Kosmetik und Körperpflege. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_65.

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Wohlfarth, Ch. "Viscosity of 1-methylnaphthalene." In Supplement to IV/18. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75486-2_365.

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Wohlfarth, Ch. "Viscosity of 2-methylnaphthalene." In Supplement to IV/18. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75486-2_366.

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Wohlfarth, Christian. "Viscosity of 1-methylnaphthalene." In Viscosity of Pure Organic Liquids and Binary Liquid Mixtures. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49218-5_362.

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Wohlfarth, Ch. "Surface tension of 2-methylnaphthalene." In Supplement to IV/16. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75508-1_180.

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Wohlfarth, Ch. "Refractive index of 1-methylnaphthalene." In Refractive Indices of Pure Liquids and Binary Liquid Mixtures (Supplement to III/38). Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75291-2_318.

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Wohlfarth, Ch. "Refractive index of 2-methylnaphthalene." In Refractive Indices of Pure Liquids and Binary Liquid Mixtures (Supplement to III/38). Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75291-2_319.

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Wohlfarth, Ch. "Viscosity of the mixture (1) 1-methylnaphthalene; (2) 2,2,4,4,6,8,8-heptamethylnonane." In Supplement to IV/18. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75486-2_1861.

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Conference papers on the topic "Methylnaphthalene"

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Tan, X. Q., and D. W. Pratt. "Rotationally resolved electronic spectra of 1- and 2-methylnaphthalene." In OSA Annual Meeting. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.tuy37.

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High-resolution fluorescence-excitation spectra of the S1S0 transitions of 1- and 2-methylnaphthalene have been obtained in the collision-free environment of a molecular beam. Each spectrum is composed of two sets of spectral lines that can be fit to different rotational Hamiltonians. The two sets of lines belong to the ground torsional levels A and E, respectively. The A lines can be fit to a rigid-rotor rotational Hamiltonian; the E lines, however, are perturbed by a coupling between the torsional motion of the methyl group and the overall rotation of the molecule. The first-order and second
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Brechignac, Philippe, Zoubeida Dhaouadi, Timothy Schmidt, et al. "VISIBLE PHOTODISSOCIATION SPECTRA OF THE 1-METHYL AND 2-METHYLNAPHTHALENE CATIONS: LASER SPECTROSCOPY AND THEORETICAL SIMULATIONS." In 69th International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2014. http://dx.doi.org/10.15278/isms.2014.wg02.

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Slavinskaya, N. A., A. Zizin, and U. Riedel. "Towards Surrogate Reaction Model Development." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45198.

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The present paper describes the proposed strategy of fuel model design based on identification of chemical and physical criteria for the selection of initial formula of the reference fuel. The first 8 criteria established and studied in previous papers so far are combustion enthalpy, formation enthalpy, molecular weight, C/H-ratio, sooting tendency index, critical point, two-phase diagram, and distillation curve. With these criteria established, the following candidate formula of the kerosene surrogate blend is defined and optimized to adequately mimic the properties of the real fuel: 10% n-pr
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Yadav, Neeraj Kumar, Mohit Raj Saxena, and Rakesh Kumar Maurya. "Numerical Investigation for Carcinogenicity and Mutagenicity Potential of PAHs Emitted from Hydrogen/diesel Dual-fuel Engine." In 2023 JSAE/SAE Powertrains, Energy and Lubricants International Meeting. Society of Automotive Engineers of Japan, 2023. http://dx.doi.org/10.4271/2023-32-0049.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;This study numerically investigates the toxicity potential of polycyclic aromatic hydrocarbon (PAHs) emitted from conventional diesel and hydrogen–diesel dual-fuel combustion engine. The simulations are performed on ANSYS Forte using a detailed chemical reaction mechanism of diesel surrogate (66.8% n − decane/33.2% alpha − methylnaphthalene). The used reaction mechanism consists of 189 species and 1392 reactions. The study numerically predicts the concentration of eight toxic PAHs (naphthalene, phenanthrene, acenaphthene
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Parveg, A. S. M. Sazzad, and Albert Ratner. "Droplets Combustion Characteristics Comparison of Single Component and Multicomponent Diesel Surrogates With Petroleum-Based Commercial Diesel Fuel." In ASME 2023 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/imece2023-113189.

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Abstract Refined, petroleum-based diesel fuel composes hundreds of hydrocarbons with distinct physio-chemical and combustion characteristics. This range of components leads to difficulties and complexities in accurate computational modeling and experimental investigations. For simplification, different surrogate fuels (single, binary or multi component) are utilized by researchers to satisfactorily mimic the target characteristics of interest (be they physio-chemical, combustion, or both). The present work is focused on combustion characteristics, and particularly those for single droplet comb
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Berry, David A., Dushyant Shekhawat, Todd H. Gardner, Maria Salazar, Daniel J. Haynes, and James J. Spivey. "Support Effects for Pt and Rh-Based Catalysts for Partial Oxidation of n-Tetradecane." In ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2006. http://dx.doi.org/10.1115/fuelcell2006-97265.

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Catalytic partial oxidation (CPOX) of liquid fuels is an attractive option for producing a hydrogen-rich gas stream for fuel cell applications. However, the high sulfur content along with aromatic compounds present in liquid fuels may deactivate reforming catalysts. Deactivation of these catalysts by carbon deposition and sulfur poisoning is a key technical challenge. The relationship between catalyst supports and deactivation have been studied here for three catalysts (Rh/Ce0.5Zr0.5O2, Pt/Ce0.5Zr0.5O2, and Pt/Al2O3) in a fixed bed catalytic reactor using a mixture of n-tetradecane, 1-methylna
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Kim, Jaeheun, Shinichi Kakami, Keiya Nishida, and Yoichi Ogata. "Effects of positive or negative dwell times of split injection on diesel spray development and mixture formation processes." In Small Engine Technology Conference & Exposition. Society of Automotive Engineers of Japan, 2020. http://dx.doi.org/10.4271/2019-32-0596.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;An investigation on the effect of dwell time of split injection on a diesel spray evolution and mixture formation process was carried out. A commercial 7-hole injector were used in the experiment to eliminate the possible discrepancies on the spray with single-hole research injector. Laser absorption scattering (LAS) technique was implemented for the measurement of the temporal evolution of fuel evaporation and mixture concentration. The diesel surrogate fuel consists of n-tridecane and 2.5% of 1-methylnaphthalene in vol
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Tanaka, Kotaro, Ibuki Dobashi, Satoshi Sakaida, and Mitsuru Konno. "Experimental and Modeling Study of NH <sub>3</sub> -SCR on a Hydrocarbon-Poisoned Cu-CHA Catalyst." In Energy & Propulsion Conference & Exhibition. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-1659.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;A urea-selective catalytic reduction (SCR) system is used for the reduction of NOx emitted from diesel engines. Although this SCR catalyst can reduce NOx over a wide temperature range, improvements in NOx conversion at relatively low temperatures, such as under cold-start or low-load engine conditions, are necessary. A close-coupled SCR (cc-SCR), which was set just after the engine exhaust manifold, was developed to address this issue. The temperature of the SCR catalyst increases rapidly owing to the higher exhaust temp
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Mawid, M. A., T. W. Park, B. Sekar, and C. Arana. "Detailed Chemical Kinetic Modeling of JP-8/Jet-A Ignition and Combustion." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68829.

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Significant progress towards development and validation of a detailed chemical kinetic mechanism for the US Air Force JP-8 fuel is presented in this article. Three detailed chemical kinetic mechanisms for three JP-8 surrogate fuels, as given in Table I, were developed and reported in this study. The main objective is to investigate the performance of the developed three mechanisms for three different surrogate fuel blends and determine the suitability of each mechanism to chemically model the US Air Force petroleum-derived JP-fuel. The detailed JP-8 chemical kinetic reaction mechanism, we have
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Yang, Shiyou, and Ruicheng Yang. "Development of a 5-Component Diesel Surrogate Chemical Kinetic Mechanism Coupled with a Semi-Detailed Soot Model with Application to Engine Combustion and Emissions Modeling." In 16th International Conference on Engines & Vehicles. SAE International, 2023. http://dx.doi.org/10.4271/2023-24-0030.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;In the present work, five surrogate components (n-Hexadecane, n-Tetradecane, Heptamethylnonane, Decalin, 1-Methylnaphthalene) are proposed to represent liquid phase of diesel fuel, and another different five surrogate components (n-Decane, n-Heptane, iso-Octane, MCH (methylcyclohexane), Toluene) are proposed to represent vapor phase of diesel fuel. For the vapor phase, a 5-component surrogate chemical kinetic mechanism has been developed and validated. In the mechanism, a recently updated H&lt;sub&gt;2&lt;/sub&gt;/O&lt;s
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