Bibliographies thématiques / 2-step pyrolysis

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Littérature scientifique sur le sujet « 2-step pyrolysis »

Auteur : Grafiati

Publié le 7 juin 2025

Mis à jour le 2 août 2025

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Articles de revues sur le sujet "2-step pyrolysis"

Liu, Lu, Yali Zheng, Peng Gong, Guangcai Shao, and Xu Huang. "Influence of preparation conditions on the physical structure and surface properties of enteromorpha clathrate bio-char." MATEC Web of Conferences 358 (2022): 01032. http://dx.doi.org/10.1051/matecconf/202235801032.

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Bio-char with rich pore structure was obtained by pyrolysis of enteromorpha clathrate (EC) and subsequent activation process. The effect of pyrolysis methods, KOH concentrations used in activation and heating rate was studied. A new method that combined pyrolysis and activation into one step was proposed. The bio-char obtained via slow pyrolysis at 450°C and 700°C had a certain pore structure. The bio-char obtained via fast pyrolysis had almost no effective pore structure and a large amount of organic matters still exist in the bio-char, while it had the largest specific surface area after act

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Ravichandran, P., P. Sugumaran, S. Seshadri, and Altaf H. Basta. "Optimizing the route for production of activated carbon from Casuarina equisetifolia fruit waste." Royal Society Open Science 5, no. 7 (2018): 171578. http://dx.doi.org/10.1098/rsos.171578.

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This work deals with optimizing the conditions of pyrolysis and type of activator to upgrade the use of Casuarina equisetifolia fruit waste (CFW) as available and a potential precursor, in production of activated carbon (AC). In this respect, the route of activation was carried out through one- and two-step pyrolysis processes, using different chemical activating agents, such as H 3 PO 4 , KOH and ZnCl 2 . The performance of the CFW-based ACs is assessed by estimating the physico-chemical characteristics (pH, electrical conductivity, bulk density and hardness), surface morphology and scanning

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Goodwin, Vituruch, Phanwatsa Amnaphiang, Pimpreeya Thungngern, Kong Kah Shin, Parncheewa Udomsap, and Nuwong Chollacoop. "Zeolite Supported Bimetallic Catalyst System: The Effect of Metal Loading for Catalytic Pyrolysis of Jatropha Residue." Key Engineering Materials 751 (August 2017): 494–99. http://dx.doi.org/10.4028/www.scientific.net/kem.751.494.

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Two transition metals were loaded on H-ZSM-5 zeolite to produce bimetallic zeolite supported catalysts for catalytic pyrolysis reaction. Ni and Co metal were loaded on H-ZSM-5 via wet impregnation method. The loading sequence was applied using one-step and two-step loading method. The different loading sequence affect surface properties of catalyst and catalytic activity in pyrolysis reaction. The bimetallic catalysts were prepared at Ni+Co metal loading content of 10+10 wt% (Ni:Co=1:1) to 10+20 wt% (Ni:Co=1:2 or 2:1). All bimetallic catalysts supported on H-ZSM-5 were calcined and characteriz

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Zhou, Quan Cheng, Hong Mei Zhang, and De Mao Li. "Thermal Stability and Kinetic Analysis of Xanthoceras sorbifolia Polysaccharide." Advanced Materials Research 518-523 (May 2012): 3904–7. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.3904.

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Pyrolysis and kinetic analysis of Xanthoceras Sorbifolia polysaccharide were evaluated using the TG-DTG/DTA method. The results indicated that its mass loss occured in three-step process . The first step could be attributed to the expulsion of water of crystallization at 25 - 176 °C. The second step corresponded to the large scale degradation of X. Sorbifolia polysaccharide in the temperature range of 179 - 661 °C. The final step was slow degradation of residues. Heating rate had significant effects on the pyrolysis of X. Sorbifolia polysaccharide and nitrogen could improve its stability. A cl

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Gupta, Murlidhar, Benjamin King, Fernando Preto, and Andrew McFarlan. "A comparative analysis of heat recovery and product stabilization in fluid-bed and ablative pyrolysis systems." E3S Web of Conferences 61 (2018): 00017. http://dx.doi.org/10.1051/e3sconf/20186100017.

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Nearly all existing commercial pyrolysis technologies employ single-step rapid condensation of vapours from 500 oC to 50 oC using sprays of cold bio-oil or liquid hydrocarbon as a quench fluid. This approach produces raw bio-oil, a non-homogenous mixture of hundreds of oxygenated organic compounds including organic acids and water. Single-step quench also results in loss of high quality heat to the ambient. In this work, a novel 3-stage fractional condensation approach has been proposed. The intent is to produce targeted stable products for value added applications as well to enhance the overa

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Cui, Ning, Kexiao Bi, Wei Sun, et al. "Effect of Pyrolysis Conditions on the Performance of Co–Doped MOF–Derived Carbon Catalysts for Oxygen Reduction Reaction." Catalysts 11, no. 10 (2021): 1163. http://dx.doi.org/10.3390/catal11101163.

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MOF–derived porous carbon is a type of promising catalyst to replace expensive Pt–based catalysts for oxygen reduction reaction (ORR). The catalytic activity for ORR depends closely on pyrolysis conditions. In this work, a Co–doped ZIF–8 material was chosen as a research object. The effect of pyrolysis conditions (temperature, heating rate, two–step heating) on the ORR performance of ZIF–derived carbon catalysts was systematically studied. The Co–ZIF–8 catalyst carbonized at 900 °C exhibits better ORR catalytic activity than that carbonized at 800 °C and 1000 °C. Moreover, a low heating rate c

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Li, Jing, Chenmin Zhou, Jianshuai Mu, En-Cui Yang, and Xiao-Jun Zhao. "In situ synthesis of molybdenum carbide/N-doped carbon hybrids as an efficient hydrogen-evolution electrocatalyst." RSC Advances 8, no. 31 (2018): 17202–8. http://dx.doi.org/10.1039/c8ra02020e.

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The molybdenum carbide/N-doped carbon hybrids (Mo<sub>2</sub>C@NC) were synthesized facilely via one-step high-temperature pyrolysis, which exhibited efficient electrocatalytic hydrogen evolution performance.

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Yang, Ke, Yu Yan, Haiyang Wang, et al. "Monodisperse Cu/Cu2O@C core–shell nanocomposite supported on rGO layers as an efficient catalyst derived from a Cu-based MOF/GO structure." Nanoscale 10, no. 37 (2018): 17647–55. http://dx.doi.org/10.1039/c8nr04475a.

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Paalo, Maarja, Anu Adamson, Meelis Härmas, Enn Lust, and Alar Janes. "Peat Derived Carbon – Perfect Fit as an Electrode Material for High Power Supercapacitors and High Capacity Sodium-Ion Batteries." ECS Meeting Abstracts MA2024-02, no. 11 (2024): 1515. https://doi.org/10.1149/ma2024-02111515mtgabs.

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In this work, we show how peat, abundant and cheap biomass, can be successfully used as a precursor to synthesize peat-derived carbons (PDCs), applicable as electrode materials both for supercapacitors (SC) and sodium-ion batteries (SIB). For supercapacitors, high surface area micro- and mesoporous carbon material is needed. For that, ZnCl2 activation method was used. From the comparative data characterizing the material with and without the ZnCl2 activation, it can be seen that mesopores have been formed in noticeable quantities after the ZnCl2 activation step (Fig. 1a), and the S BET value i

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Yousaf, Balal, Guijian Liu, Qumber Abbas, et al. "Enhanced removal of hexavalent chromium from aqueous media using a highly stable and magnetically separable rosin-biochar-coated TiO2@C nanocomposite." RSC Advances 8, no. 46 (2018): 25983–96. http://dx.doi.org/10.1039/c8ra02860e.

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Chapitres de livres sur le sujet "2-step pyrolysis"

Graziani, Anthony, Karina Meerpoel-Petri, Virginie Tihay-Felicelli, et al. "Numerical prediction of the thermal stress induced by the burning of an ornamental vegetation at WUI." In Advances in Forest Fire Research 2022. Imprensa da Universidade de Coimbra, 2022. http://dx.doi.org/10.14195/978-989-26-2298-9_112.

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Over the last decades, urban expansion and global warming have increased the occurrence of wildland fires propagating at the vicinity of buildings at WUI. In this scenario, ornamental vegetation has been identified as a vector of fire propagation close to habitations, which can significantly increase the risk of damage [1]. In such context, it is necessary to quantify the thermal stress generated by an ornamental plant over a building to predict the vulnerability of construction materials. To this end, numerical simulation is a good candidate to easily multiply burning cases at field scale and

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"Solution to the problem of occurrence of higher harmonics when using pyrolytic graphite PG (002) as a device for monochromatization of neutron flux." In Book of Abstracts - RAD 2025 Conference. RAD Centre, Niš, Serbia, 2025. https://doi.org/10.21175/rad.abstr.book.2025.30.6.

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Introduction. Polycrystalline materials are described not only by their microstructure but also by their texture, which is a function of the distribution of crystallographic orientations of grains relative to the external coordinate system. Which indicates the importance of new materials in texture research. The neutron diffraction method for texture analysis has the main advantage is that the interaction of neutrons with the material is much weaker and does not depend on the number of electrons. Therefore, the penetration depth of neutrons into the studied volume is approximately 3 orders of

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Actes de conférences sur le sujet "2-step pyrolysis"

Lupandin, Vladimir, Martyn Hexter, and Alexander Nikolayev. "Lycoming T-53 Gas Turbine Engine Modification for Industrial Application." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27517.

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This paper describes a development program active at Magellan Aerospace Corporation since 2003, whereby specific modifications are incorporated into an Avco Lycoming T-53 helicopter gas turbine engine to enable it to function as a ground based Industrial unit for distributed power generation. The Lycoming T-53 is a very well proven and reliable two shaft gas turbine engine whose design can be traced back to the 1950s and the fact of its continued service to the present day is a tribute to the original design/development team. Phase 1 of the Program introduces abradable rotor path linings, blad

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Herdin, Gu¨nther, Friedrich Gruber, Johann Klausner, Reinhard Robitschko, and Diethard Plohberger. "Use of Hydrogen and Hydrogen Mixtures in Gas Engines and Potentials of NOx Emissions." In ASME 2005 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/icef2005-1354.

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In the utilization of gas mixtures with high amounts of H2 there is a great number of applications of such special gases, for example several gases that result from pyrolysis or the gasification of biomass or thermally utilizable waste substances. What is special about gases containing H2 is the shifting of the lean-burn limit towards greater amounts of excess air than is the case with natural gas. This effect causes the mean combustion chamber temperatures to sink and the NOx emissions are reduced to a very low level. Depending on the amount of hydrogen and other gas components it is possible

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Widmer, Marcel, Patrik Hoffmann, Baudouin Lecohier, Herbert Solka, Jean-Michel Philippoz, and Hubert van den Bergh. "Fast In-Situ Metallization: A Comparison of Several Methods with Possible Applications in High Density Multichip Interconnects." In The Microphysics of Surfaces: Beam-Induced Processes. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/msbip.1991.wa3.

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Some recent results obtained using three quite different experimental approaches to fast in-situ surface metallization are presented. One of the goals is to make high density interconnects for multichip modules with metal contact width, height and pitch respectively of the order of 10, 5 and 25 μm. Direct writing speeds should be in excess of 1 cm/s. The first approach tried is to push classical pyrolytic laser chemical vapor deposition of copper from its bis-hexafluoroacetylacetonate Cu(hfa)2 to its limits. This is done by increasing the Cu(hfa)2 vapor pressure and by seeding the transparent

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Butterman, Heidi C., and Marco J. Castaldi. "CO2 Enhanced Steam Gasification of Biomass Fuels." In 16th Annual North American Waste-to-Energy Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/nawtec16-1949.

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The current study involves an experimental investigation of the decomposition of various biomass feedstocks and their conversion to gaseous fuels such as hydrogen. The steam gasification process resulted in higher levels of H2 and CO for various CO2 input ratios. With increasing rates of CO2 introduced into the feed stream, enhanced char conversion and increased CO levels were observed. While CH4 evolution was present throughout the gasification process at consistently low concentrations, H2 evolution was at significantly higher levels though it was detected only at elevated gasification tempe

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