Showing 881 - 900 results of 2,155 for search '"endotherms"', query time: 2.80s Refine Results
  1. 881

    Investigation of the Critical Behavior, Magnetocaloric Effect and Hyperfine Structure in the Fe<sub>72</sub>Nb<sub>8</sub>B<sub>20</sub> Powders by Safia Alleg, Thaounza Chabi, Nadia Bensebaa, Joan Saurina, Lluisa Escoda, El-Kebir Hlil, Joan-Josep Suñol

    Published 2020-10-01
    “…The Mössbauer spectrometry results showed the formation of nanostructured Fe(B) and Fe(Nb) solid solutions, Fe<sub>2</sub>B boride, and an amorphous phase. The endothermic and exothermic peaks that are observed in the DSC curves might be related to the Curie temperature, and the crystallization of the amorphous phase, respectively. …”
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    Article
  2. 882

    Ecofriendly Green Synthesis of Copper (II) Oxide Nanoparticles Using <i>Corchorus olitorus</i> Leaves (Molokhaia) Extract and Their Application for the Environmental Remediation of... by Reham O. Aljedaani, Samia A. Kosa, Mohamed Abdel Salam

    Published 2022-12-01
    “…Moreover, the catalytic degradation of the direct violet dye using the ecofriendly green CuO NPs was studied kinetically and thermodynamically and the results showed that the catalytic degradation process agreed well with the pseudo-second-order kinetic model and the process was spontaneous and endothermic in nature. Finally, high catalytic degradation of the direct violet dye was observed when the eco-friendly prepared green CuO NPs were placed in real water samples.…”
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    Article
  3. 883

    Preparation and Pore Structure of Energy-Storage Phosphorus Building Gypsum by Shixiong Liao, Kun Ma, Zhiman Zhao, Lei Wu, Zhuo Liu, Sicheng Quan

    Published 2022-10-01
    “…The heat energy further captured by energy-storage phosphorous building gypsum in the endothermic and exothermic stages is 28.19 J/g and 28.64 J/g, respectively, which can be used to prepare energy-saving building materials.…”
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    Article
  4. 884

    Safranin O dye removal using Senna fistula activated biomass: Kinetic, equilibrium and thermodynamic studies by C. J. Ajaelu, A. A. Ikotun, E. O. Faboro

    Published 2022-12-01
    “…The thermodynamic parameter shows that the sorption of Safranin O on Senna fistula activated carbon was feasible, spontaneous and endothermic. Senna fistula-activated carbon was found to be cheap and efficient adsorbents for the removal of Safranin O dye from aqueous solutions. …”
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    Article
  5. 885

    Numerical Simulation of a 10 kW Gas-Fueled Chemical Looping Combustion Unit by Liyan Sun, Junjie Lin, Dali Kong, Kun Luo, Jianren Fan

    Published 2022-03-01
    “…The temperature in the air reactor increases with height owing to the exothermic reaction of the xidation of the oxygen carrier, while the temperature in the fuel reactor decreases with height due to the endothermic reaction. The oxidation level of the oxygen carrier is obtained by simulation, which is hard for measurement, and the difference between the inlet and outlet is 0.065. …”
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    Article
  6. 886

    Evaluation of Kinetic, Equilibrium and Thermodynamics of Cationic Ion Using Agro-Industrial Residues of Plantain (<i>Musa paradisiaca</i>) by Angel Villabona-Ortíz, Ángel Darío González-Delgado, Candelaria Tejada-Tovar

    Published 2022-04-01
    “…The thermodynamic parameters determine that the process is endothermic, with strong biomass–metal bonds that are favorable and spontaneous as the temperature increases. …”
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    Article
  7. 887

    Removal of tetracycline from water using ethylenediamine-modified magnetic chitosan by Yuankun Liu, Xinxia Zhang, Liyuan Zhao

    Published 2023-01-01
    “…Thermodynamic analysis revealed that adsorption process was both endothermic and spontaneous. The regeneration experiment suggested that the adsorbent possessed excellent reusability for further use. …”
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    Article
  8. 888
  9. 889

    Optimum Pressure Distribution in Design of Cryogenic NGL Recovery Processes by Mehdi Mehrpooya, Ali Vatani, Sayed Mohammad Ali Moosavian

    Published 2012-09-01
    “…Adsorption of aniline on adsorbent was chemical adsorption and high temperature was favourable to endothermic chemisorption process. In addition, the kinetic studies were also carried out. …”
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    Article
  10. 890

    Recovery of W(VI) from Wolframite Ore Using New Synthetic Schiff Base Derivative by Rawan E. Elbshary, Ayman A. Gouda, Ragaa El Sheikh, Mohammed S. Alqahtani, Mohamed Y. Hanfi, Bahig M. Atia, Ahmed K. Sakr, Mohamed A. Gado

    Published 2023-04-01
    “…The sorption process of the W(VI) ions is spontaneous due to the negative value of ∆<i>G</i>° calculated for all temperatures, while the positive value of ∆<i>H</i>° proves that the adsorption of the W(VI) ions adsorption on HNAP/QA is endothermic. The positive value of ∆<i>S</i>° suggests that the adsorption occurs randomly. …”
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    Article
  11. 891

    Hydrothermally Treated Banana Empty Fruit Bunch Fiber Activated Carbon for Pb(II) and Zn(II) Removal by Ganiyu Abimbola Adebisi, Zaira Zaman Chowdhury, Sharifah Bee Abd Hamid, Eaqub Ali

    Published 2016-09-01
    “…Thermodynamic characterization revealed that the equilibrium system was endothermic and spontaneous.…”
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    Article
  12. 892

    Exploring the Iron Oxide Functionalized Biobased Carbon-silica-polyethyleneimine Composites for Hexavalent Chromium Removal from Dilute Aqueous Solutions by Mpho Cynthia Qhubu, Philiswa Nosizo Nomngongo, Vusumzi Emmanuel Pakade

    Published 2021-11-01
    “…Δ<i>G</i>° (−3 to −12 kJ/mol) and Δ<i>H</i>° (46, 12 and 5 kJ/mol) values affirmed that the adsorption of Cr(VI) was spontaneous and endothermic and dominated by chemical interactions.…”
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    Article
  13. 893

    Fabrication of Novel Bentonite-Anthracite@Zetag (BT-An@Zetag) Composite for the Removal of Arsenic (V) from an Aqueous Solution by Mohamed R. El-Aassar, Ahmed K. Alezbaway, Ibrahim O. Althobaiti, Mohamed Y. El-Sayed, Hend S. Abu Salem, Hassan M. A. Hassan, Rawan F. Alolaimi, Emam F. El Agammy, Mohamed S. Mohy-Eldin, Fathy M. Mohamed

    Published 2022-11-01
    “…The estimated enthalpy (H°) indicates that the adsorption process is both chemical and endothermic.The calculated free energy (G°) indicates that the reaction is nonspontaneous. …”
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    Article
  14. 894

    Experimental and Numerical Studies on the Effect of Lithium-Ion Batteries’ Shape and Chemistry on Heat Generation by Piyatida Trinuruk, Warongkorn Onnuam, Nutthanicha Senanuch, Chinnapat Sawatdeejui, Papangkorn Jenyongsak, Somchai Wongwises

    Published 2022-12-01
    “…All batteries displayed exothermic behavior during a lower SOC that gradually became endothermic behavior at around 0.4 SOC onwards.…”
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    Article
  15. 895

    Investigation of Temperature-Dependent Magnetic Properties and Coefficient of Thermal Expansion in Invar Alloys by Lin Huang, Yongjian Zhou, Tingwen Guo, Dong Han, Yu Gu, Cheng Song, Feng Pan

    Published 2022-02-01
    “…Also, the differential thermal analysis (DTA) shows endothermic and exothermic reactions represent crystalline transitions, which could possibly cause the abrupt change of magnetic properties and thermal expansion coefficient of materials. …”
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    Article
  16. 896

    DYNAMICS DESCRIPTION AND THERMODYNAMICS ANALYSIS OF POLYSACCHARIDES EXTRACTION PROCESS FROM FOXTAIL MILLET by AI S. ZHU, YI N. WANG, JING K. CHEN, JUN Z. ZHAO, YONG PENG

    Published 2022-06-01
    “…The enthalpy value and entropy value of the extraction process was 25.92 and 100.06 J·mol-1·K-1 respectively, and the Gibbs free energy value were all less than zero, indicating that the extraction process was an endothermic, entropy increasing, spontaneous and irreversible process. …”
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    Article
  17. 897

    Synthesis of Mg-Al Hydrotalcite Clay with High Adsorption Capacity by Zhaoyi Li, Jie Zhang, Chengtun Qu, Ying Tang, Michal Slaný

    Published 2021-11-01
    “…Thermodynamic calculations propose that the adsorption of sulfonated lignite was spontaneous, endothermic, and a thermodynamically feasible process.…”
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    Article
  18. 898

    Impregnated Polymeric Sorbent for the Removal of Noble Metal Ions from Model Chloride Solutions and the RAM Module by Karolina Zinkowska, Zbigniew Hubicki, Grzegorz Wójcik

    Published 2024-03-01
    “…Based on thermodynamic considerations, their sorption proved to be endothermic, as the values of ΔH° > 0. Sorption was spontaneous and favourable (ΔG° < 0). …”
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    Article
  19. 899

    3D printed hierarchical spinel monolithic catalysts for highly efficient semi-hydrogenation of acetylene by Yuan, Zijian, Liu, Lu, Ru, Wei, Zhou, Daojin, Kuang, Yun, Feng, Junting, Liu, Bin, Sun, Xiaoming

    Published 2022
    “…Porous monolithic catalysts with high specific surface areas, which can not only facilitate heat/mass transfer, but also help to expose active sites, are highly desired in strongly exothermic or endothermic gas-solid phase reactions. In this work, hierarchical spinel monolithic catalysts with a porous woodpile architecture were fabricated via extrusion-based three-dimensional (3D) printing (direct ink writing, DIW in brief) of aluminate-intercalated layered double hydroxide (AI-LDH) followed by low temperature calcination. …”
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    Journal Article
  20. 900

    Modeling heat and degree of gelation for methyl cellulose hydrogels with NaCl additives by Joshi, Sunil Chandrakant, Lam, Yee Cheong

    Published 2015
    “…Methyl cellulose (MC) hydrogels are thermoreversible physical hydrogels and their gelation is an endothermic process. A model consisting of a generalized expression for two bell-shape curves was formulated to describe and capture enthalpy changes that take place during the gelation of an aqueous solution of MC, SM4000, in the presence of sodium chloride, NaCl, in different concentrations. …”
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    Journal Article