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Dissertations / Theses on the topic 'Plasma-assisted catalysis'

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1

Chen, Guoxing. "A study of microwave plasma-assisted CO2 conversion by plasma catalysis." Doctoral thesis, Universite Libre de Bruxelles, 2017. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/255888.

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Climate change and global warming caused by the increasing greenhouse gases emissions (such as CO2) in the atmosphere recently attract the attention of the scientific community. These large emissions have been correlated to the Global Warming effect which has many consequences across the globe, including glacial retraction, ocean acidification and increased severity of weather events. With green technologies still in the infancy stage, it can be expected that CO2 emissions will stay this way for a long time to come. It is necessary to find an alternative way to get rid of the resulting environ
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2

Gulko, Ilya Dmitrievich. "Ns Pulse / RF Hybrid Plasmas for Plasma Chemistry and Plasma Assisted Catalysis Applications." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1598271986860656.

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3

Uda, Gedaralage Mihiri Ekanayake. "Plasma assisted nanomaterials synthesis from sustainable sources." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/235732/1/Thesis-Mihiri%2BEkanayake3%2B.pdf.

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This thesis represents, Plasma assisted nanomaterial synthesis from sustainable sources, which uses plasma in atmospheric pressure to produce valuable nanomaterials. The sustainable sources such as seawater and biomass have been used together with plasma to develop novel methodologies in seawater desalination, water splitting, mung bean germination, CO2 capture and organic catalysis. This work includes alternative solutions for the major global problems such as water scarcity, clean energy production and global warming using readily available raw materials.
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4

Marchesseault, Andrew Robert [Verfasser]. "Micro Surface Discharge for Plasma-Assisted Catalysis in Portable Fuel Cell Reforming Applications / Andrew Robert Marchesseault." Aachen : Shaker, 2012. http://d-nb.info/1067736190/34.

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5

Sonar, Shilpa. "Abatement of toluene through storage-regeneration sequential process : application of thermal and plasma assisted catalytic regeneration." Electronic Thesis or Diss., Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUR064.

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Le toluène est un composé organique volatil (COV) toxique présent dans les environnements intérieurs et extérieurs. La dépollution du toluène se fait généralement par adsorption ou oxydation catalytique. Dans ce dernier cas, le toluène est converti en CO2 et H2O, mais des espèces toxiques peuvent s'accumuler sur les catalyseurs, provoquant leur empoisonnement, leur désactivation et leur frittage. Pour surmonter ces inconvénients, nous proposons des procédés hybrides innovants de "stockage-régénération". Il s’agit de procédés séquentiels basés l’adsorption suivie de l'oxydation catalytique acti
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6

Marchesseault, Andrew Robert Verfasser], and Stephanus [Akademischer Betreuer] [Büttgenbach. "Micro Surface Discharge for Plasma-Assisted Catalysis in Portable Fuel Cell Reforming Applications / Andrew Robert Marchesseault ; Betreuer: Stephanus Büttgenbach." Braunschweig : Technische Universität Braunschweig, 2012. http://d-nb.info/1231992395/34.

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7

Carnevale, Santino D. "Catalyst-free III-nitride Nanowires by Plasma-assisted Molecular Beam Epitaxy: Growth, Characterization, and Applications." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1374066626.

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8

Liu, Lu. "Roles of Non-thermal Plasma in Gas-phase Glycerol Dehydration Catalyzed by Supported Silicotungstic Acid." 2011. http://trace.tennessee.edu/utk_graddiss/992.

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Acrolein is an indispensable chemical intermediate with a rising demand in recent years. The concern of the increase of propylene prices due to the shrinking supply of nonrenewable crude oil makes the acid-catalyzed gas-phase glycerol dehydration to acrolein a prime candidate for research. Our analysis showed that the sustainable acrolein production from glycerol was both technically and economically viable. Alumina2700® (Al) and Silica1252® (Si) loaded with silicotungstic acid (HSiW) possessed distinct features while provided equally good acrolein yield (73.86mol% and 74.05mol%, respectively)
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9

Shen, Yu-An, and 沈育安. "Plasma Assisted Catalytic System for Ethanol Steam Reforming- Comparison of Different Catalysts." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/17697269381675416994.

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碩士<br>國立交通大學<br>機械工程學系<br>100<br>In this study, the preheated ethanol steam flow is reformed using a gliding-arc plasma-assisted catalyst (PAC) system with a power frequency of 20 kHz. Among the PAC reforming, the noble catalyst Rh and non-noble catalyst Ni0.35Mg2.65FeO4.5 respectively is used to compare PAC with catalyst alone reforming by generating the hydrogen selectivity and conversion rate via different experimental parameters. In Rh catalyst alone reforming at the range of air flow rates of 0.5-2.0 SLM, the results show that a 100% conversion rate and a maximum of 115% hydrogen selectiv
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10

Chi, Liu Pei, and 劉佩錡. "Carbon Catalyst Assisted Plasma Reforming for Hydrogen Production." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/r9sntk.

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碩士<br>逢甲大學<br>材料科學與工程學系<br>103<br>Methane reforming has been carried out by low temperature radio frequency (RF) plasma. The plasma was composed of mixture gas with different N2/CH4 flow ratios. In order to obtain optimal condition, several parameters, including RF powers and ratio of N2/CH4 flow rates were used to achieve the maximal yield of hydrogen and conversion of methane. The results indicate that 125 W of RF power under N2/CH4 flow rate of 8/24 showed 70% methane conversion rate and 50% hydrogen production yield without carbon catalyst. Temperature measuring of radio frequency plasma r
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11

CHIU, CHU, and 邱儲. "Three-Dimensional Structured Catalysts Assisted Plasma Reforming for Hydrogen Production." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/27294481691100817673.

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碩士<br>逢甲大學<br>材料科學與工程學系<br>105<br>Propane reforming has been carried out by low temperature radio frequency (RF) plasma. The plasma was composed of mixture gas with different N2/LPG flow ratios. In order to obtain optimal condition, several parameters, including RF powers and ratio of N2/LPG flow rates were tested to achieve the maximal yield of hydrogen and conversion of propane. The results indicate that 150 W of RF power under N2/LPG flow rate of 3/27 showed 70% methane conversion rate and 45% hydrogen production yield with conductive carbon cloth as a catalyst. Temperature measuring of rad
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12

Hsu, Wei-Neng, and 徐暐能. "Preliminary Study of Gliding Arc Plasma Assisted Catalytic Ethanol Steam Reforming." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/38409224918859588427.

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碩士<br>國立交通大學<br>機械工程學系<br>99<br>In this study, the gliding arc non-thermal plasma would assist catalyst reforming ethanol into hydrogen through auto-thermal reaction. The plasma discharge gas containing high energy state ions and metastable species which may break the fuel into smaller gas molecular to assist catalyst reforming. At first, catalyst reforming and gliding arc plasma have been separately studied. On one hand, 5 wt% Rh/CeO2 catalyst reforming has optimized 115.03 % hydrogen selectivity, 66.02 % carbon monoxide selectivity, 100 % conversion rate and 63 % efficiency under 1.0 SLM air
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13

Ye, Wei-Yang, and 葉蔚揚. "Plasma-assisted preparation of Cu/ZnO/Al2O3 catalyst for DME synthesis." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/76972629838433476267.

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碩士<br>中原大學<br>化學工程研究所<br>100<br>In this work, a novel radio frequency (RF) glow discharge plasma modified Cu/ZnO/Al2O3 catalysts were prepared by conventional coprecipitation method, with the goal to improve its performance on the dimethly ether synthesis from syngas. Not only plasma modified process, the feasibility of using plasma to replace traditional calcination process were also investigated. To further understand the interplay between plasma species and catalyst surface, we used optical emission spectroscopy (OES) as a diagnostic tool to observe the concentration of active species in th
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14

Yuan, Min-Hao, and 袁明豪. "Ozone- and Plasma-assisted Catalytic Oxidation for the Destruction of Gaseous Naphthalene." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/37711521875571739369.

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博士<br>國立臺灣大學<br>環境工程學研究所<br>99<br>This study investigated ozone- and plasma-assisted catalytic oxidation for the decomposition of gaseous organic compound in gas phase. Naphthalene (Nap), the most volatile, simple structured and abundant polycyclic aromatic hydrocarbons (PAHs) observed in the atmosphere, is taken as a target compound. The processes examined include the ozone catalytic oxidation (OZCO) and radio frequency-powered atmospheric-pressure plasma jet (APPJ) oxidation and APPJ with Pt/γ-Al2O3 catalysts, noted as catalytic APPJ (CAPPJ) oxidation. The OZCO experiments were carried out a
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15

Mahammadunnisa, Shaik, and Subrahmanyam Ch. "Conversion of Greenhouse Gases to Value Added Products Assisted By Catalytic Nonthermal Plasma." Thesis, 2014. http://raiith.iith.ac.in/847/1/CY10P012.pdf.

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The negative impact the greenhouse gases, especially carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) on the environment is well established and development of suitable technologies is warranted in order to regulate their increasing concentrations in the atmosphere. Co-processing of these gases has the advantage of waste minimization, energy production, resource utilization and pollution control. However, as the activation of these gases is highly endothermic, conventional thermocatalytic techniques may not be effective. In this context, nonthermal plasma (NTP) generated by electric
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