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Dissertations / Theses on the topic 'Chemisorptions'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Batista, Ana Paula de Lima. "Adsorção química de átomos na superfície C(100)2x1 do diamante: um estudo teórico." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/46/46132/tde-20072010-164215/.

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O diamante, juntamente com o germânio e o silício, é um importante material para área de tecnologia de semicondutores e sua superfície C(100) é considerada a de maior interesse devido às várias possibilidades de aplicações tecnológicas. Neste trabalho, seguindo uma linha similar de estudos teóricos envolvendo clusters de silício, já estudados em nosso grupo, e utilizando o estado da arte em termos de cálculos de estrutura eletrônica, realizou-se uma investigação detalhada englobando aspectos estruturais e energéticos do aglomerado C9H12 nos estados singleto e tripleto, bem como as novas caract

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2

Burkart, Stefan. "Wasserstoff-Chemisorption an Metallclustern." [S.l. : s.n.], 2000. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB8702553.

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3

Hüpen, Bernhard. "Rigorose Modellierung und Simulation von Chemisorptionsprozessen." München Verl. Dr. Hut, 2008. http://d-nb.info/992162882/04.

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4

Tong, A. W. L. "Chemisorption studies on Ni(100)." Thesis, University of Nottingham, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384364.

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5

Stolčić, Davor. "Sauerstoff- und Stickstoff-Chemisorption an Metallclustern." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=966623207.

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6

Fitzpatrick, O. "CO and O chemisorption on platinium." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246565.

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7

Singh, N. K. "Chemisorption studies on single crystal nickel surfaces." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235360.

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8

Tang, Sau Lan. "Dynamics of chemisorption : CO on Ni(111)." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/15289.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1985.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE.<br>Includes bibliographical references.<br>by Sau Lan Tang.<br>Ph.D.

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9

Yang, Shizhong Phillips James M. "Ab initio and semiempirical studies of molecules adsorbed on surfaces." Diss., UMK access, 2006.

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Thesis (Ph. D.)--Dept. of Physics and School of Computing and Engineering. University of Missouri--Kansas City, 2006.<br>"A dissertation in physics and electrical engineering." Advisor: James M. Phillips. Typescript. Vita. Title from "catalog record" of the print edition Description based on contents viewed Jan. 29, 2007. Includes bibliographical references (leaves 134-146). Online version of the print edition.

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10

Wight, Andrew Christopher. "Dissociative chemisorption of small molecules at Fe(110)." Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321148.

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11

Wander, Adrian. "Cluster studies of chemisorption using total energy techniques." Thesis, University of Warwick, 1989. http://wrap.warwick.ac.uk/101952/.

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12

McGonigal, Marianne. "Reactive chemisorption of molecular fluorine on Si(100)." Thesis, Massachusetts Institute of Technology, 1989. https://hdl.handle.net/1721.1/130998.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 1989<br>Includes bibliographical references (leaves 215-217).<br>by Marianne McGonigal.<br>Ph. D.<br>Ph.D. Massachusetts Institute of Technology, Department of Chemistry

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13

Lamb, R. N. "An experimental study of thin film physisorption and chemisorption." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233916.

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The physical adsorption of a liquid film and the chemisorption of a solid polymer film were investigated from macroscopic and microscopic viewpoints respectively. The vapour adsorption and subsequent formation of thin equilibrium hexane films (<30AA ) on a mica substrate (initially in ultra high vacuum) was examined. The fundamental Van der Waals intermolecular forces which determine the measured film thickness are neatly envisaged by the continuum theory due to Lifshitz. A theoretically derived adsorption isotherm was found to underestimate that measured experimentally by up to 100% on the fr

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14

Komrowski, Andrew J. "Initial oxidation of A1(111) : abstractive chemisorption reaction dynamics /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2001. http://wwwlib.umi.com/cr/ucsd/fullcit?p3022222.

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15

Бондар, Д. А. "Механическая и физико-химическая вакуумные откачки". Thesis, Сумский государственный университет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/41088.

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16

Wong, Philip C. L. "LEED crystallographic studies for chemisorption on rhodium and zirconium surfaces." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27568.

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The work in this thesis includes crystallographic investigations with low-energy electron diffraction (LEED) for the surface structures designated Rh(111)-(√3x√3)30°-S, Rh(111)-(2x2)-0, Zr(0001)-(1x1)-0 and Zr(0001)-(1x1)-N. In each case intensity-versus-energy (I(E)) curves for a set of diffracted beams were measured with a video LEED analyzer, and then compared with the results of multiple scattering calculations made for various structural models. Levels of correspondence between experimental and calculated 1(E) curves were assessed with the reliability index proposed by Pendry, and surface

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17

Zeng, Hua Chun. "LEED crystallographic studies for chemisorption on the Cu(100) surface." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29328.

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The work in this thesis includes LEED crystallographic studies with low-energy electron diffraction (LEED) for the surface structures designated Cu(100)-(2x2)-S, Cu(100)-c(2x2)-N, Cu(100)-(√2x√2)45°-O and Cu(100)-(2x√2x√2)45°-O formed by chemisorption on the (100) surface of copper. In each case the intensity-versus-energy curves (I(E) curves) were measured with a video LEED analyser for a set of independent diffracted beams, and comparisons were made with the results of multiple-scattering calculations for various structural models. Levels of correspondence between experimental and calculated

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18

Harrison, Mark Anthony. "Chemisorption on Pd(110) studied by Reflection Absorption Infrared Spectroscopy." Thesis, University of Liverpool, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280846.

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19

Poon, Gary C. "Abstractive chemisorption reaction dynamics of diatomic halogens on aluminum(111) /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3148250.

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20

Lennon, David. "Spectroscopic studies of adsorbed species on metal surfaces." Thesis, University of East Anglia, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329316.

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21

Parlett, Peter Michael. "Infrared spectroscopy of adsorbates on single crystal surfaces." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307817.

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22

Wilkes, J. "Photochemistry of small adsorbates on surfaces." Thesis, University of Huddersfield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286052.

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23

Alkunshalie, Talal. "Chemisorption of aromatic molecules on Si(100)-2x1 : an HREELS study." Thesis, University of Liverpool, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367288.

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24

Brown, Wendy A. "Low temperature infrared emission and absorption spectroscopy for studies of chemisorption." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364326.

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25

Charmant, Jonathan Paul Henry. "Reactivity of the #mu#3-benzyne ligand towards small organic molecules." Thesis, University of Bristol, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238905.

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26

Jigato, Manuel Perez. "NEXAFS studies of molecular adsorbates on metal single crystal surfaces." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388439.

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27

Prestidge, Clive A. "The chemisorption of cyclic and linear polymers at the solid-liquid interface." Thesis, University of Bristol, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282888.

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28

Chua, Foong Mooi. "A study of oxygen chemisorption on Cu(110) by scanning tunnelling microscopy." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315836.

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29

Ayris, Paul Martin. "High temperature SO2 chemisorption on model systems : implications for in-plume processes." Thesis, University of York, 2010. http://etheses.whiterose.ac.uk/1058/.

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Volcanic volatile species are scavenged by silicate ash during transition through eruption plumes. Scavenging may form S, F and Cl salts and acids on ash surfaces, though the mechanisms and controlling variables remain poorly understood. A limited mechanistic understanding impedes estimation of volcanic volatile budgets and may also prevent assessment of environmental impacts resulting from volatile scavenging. Limited assessment of these impacts may have implications for local communities affected by ashfall onto vegetation, soils and into water bodies, and ashfall from very large eruptions m

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30

Kirwan, Luke J. "An investigation of polyacrylate adsorption onto hematite." Thesis, Curtin University, 2002. http://hdl.handle.net/20.500.11937/308.

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For the majority of tailings substrates, flocculant adsorption proceeds through hydrogen bonding of the amide functionalities with neutral surfaces. However, flocculation of Bayer process residue solids takes place in highly caustic liquors, typically using high molecular weight polyacrylates. This represents an almost unique situation, and implies a totally different adsorption mechanism. Direct examination of polyacrylate adsorption within the complex matrix of real liquors and a mixture of residue phases is difficult, making it necessary to focus on a model substrate (hematite) and syntheti

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31

Wright, M. A. P. "'1H NMR studies of hydrogen chemisorption on supported platinum and supported copper catalysts." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336858.

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32

Bakyayita, Kizito Grace. "Equilibrium and Kinetic Batch Studies of Cadmium and Lead sorption using Low Cost Biosorbents." Licentiate thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-145004.

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Agricultural wastes; Albizia coriaria, Coffea canephora, Cyperus papyrus, Erythrina abyssinica and Musa spp were evaluated for uptake of aqueous Cd2+ and Pb2+ ions in single- and binary-component solutions. Untreated, base-treated and peroxide-treated biomasses were employed in batch studies. The optimal conditions for Cd2+ and Pb2+ ions biosorption were pH 3.5 – 5 for contact time 3.0 – 3.5 hours and biosorbent dosage 10 – 12.5 g/L. Base-treated biosorbents showed a 10 – 17 % sorption enhancement for Cd2+ ions and a 1.6 – 2.3 % uptake reduction for Pb2+ ions. The sorption capacities for Cd2

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33

Lynch, Mark Francis. "Chemical reactions of small molecules on metal surfaces : a density functional theory study." Thesis, Queen's University Belfast, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314017.

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34

Gsell, Marianne. "Chemisorption von O mit verschiedenen Koadsorbaten auf Ru(001) Strukturbestimmung mittels LEED und STM /." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964211769.

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35

Bouyssy, Pierre X. J. "'1H NMR studies of hydrogen and carbon monoxide chemisorption on the EUROPt-1 catalyst." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367319.

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36

Notz, Ralf Jörg. "CO2-Abtrennung aus Kraftwerksabgasen mittels Reaktivabsorption." Berlin Logos, 2009. http://d-nb.info/1000752992/04.

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37

Adjei, Thomas. "Characterization of a Novel Biodegradable Material to Reduce Emission of Ammonia." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/30949.

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A novel biodegradable ammonia control material was developed from steam exploded corn cob and its adsorption capacity was studied by packed column and titration method. The packed column studies showed that the maximum absorption capacities of the raw corn cob (RCC) and the steam exploded corn cob (SECC) were 10.45 mg NHB3B/gRCC and 59.80 mg NHB3B/gSECC respectively. However, the titration of the water slurries with a NHB4BOH showed that the capacity of the SECC was 14.4 times that of RCC. The large difference between the packed column (SECC/RCC = 5.7) and the slurry titration (SECC/RCC = 14.4

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38

Walaszek, Bernadeta. "Structural and dynamical studies of catalytically active ruthenium nanoparticles employing 2H solid state NMR." Berlin mbv, 2008. http://d-nb.info/989980189/04.

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39

Valenzuela, Mariefel Bayta. "Batch Aqueous-phase Reforming of Lignocellulosic Biomass for Hydrogen Production." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/11624.

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Aqueous-phase reforming (APR) is reported for the first time for the production of H2 from actual biomass. The experiments are carried out in batch using a 100mL Parr microreactor heated to 225C. In this one-pot, two-step process, acid hydrolysis is used to break down the polymeric constituents of biomass to smaller soluble molecules and these species are reformed using a Pt/Al2O3 catalyst. The experiments show that increasing the acid concentration from 1% to 5% causes more than a twelve-fold increase in H2 concentration, with hydrogen a minor product accounting for 18% of the non-condensable

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40

Butler, David Austin. "Geometric and electronic aspects of the dissociative chemisorption of hydrogen and nitrogen on metal surfaces." Thesis, University of Southampton, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240949.

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41

Whitfield, George C. (George Calvin). "The Electroadsorption Field Effect Transistor : numerical and experimental treatment of chemisorption on nanostructured chemical sensors." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/101861.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2012.<br>"February 2012." Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 295-300).<br>Chemisorption on semiconducting metal oxides is in general of great importance to the fields of clean energy, heterogeneous catalysis, nanoelectronics, and trace chemical detection. The purpose of this thesis is to illuminate this process by means of an investigation that utilizes the electric field effect to control surface chemistry and is both theore

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42

Boerner, James R. "CaO sorption of HCl gas in an acoustic field." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/7012.

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43

Chen, Xiaole. "Chemisorption and anodic oxidation of aromatic molecules on Pd electrode surfaces: studies by UHV-EC-STM." Texas A&M University, 2004. http://hdl.handle.net/1969.1/3171.

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The chemisorption and anodic oxidation of hydroquinone (H2Q) and benzoquinone (BQ) at palladium electrode surfaces was studied by a combination of electrochemistry (EC), Auger electron spectroscopy (AES), high-resolution electron- energy loss spectroscopy (HREELS) and electrochemical-scanning tunneling microscopy (EC-STM) on a smooth polycrystalline and well-defined (single-crystalline) Pd(100) electrode surface. The results point to the following more critical conclusions: (i) Chemisorption of H2Q from dilute (less than or equal to 0.1 mM) aqueous solutions for

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44

Schuerlein, Thomas John. "Chemisorption in organic semiconductor systems: Investigation of organic semiconductor-organic semiconductor and organic semiconductor-metal interfaces." Diss., The University of Arizona, 1995. http://hdl.handle.net/10150/187068.

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The production of ordered thin films of organic monolayers is of general interest to the surface science community and of specific interest to our laboratory where the understanding of small molecule adsorption has been a long term goal. The production of ordered thin films may simplify the study of the interactions of adsorbate molecules on organic films. The production of ordered layers of aromatic hydrocarbons and dye molecules were performed under a variety of deposition conditions in an ultrahigh vacuum (UHV) environment. These films were studied with several UHV analytical techniques inc

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45

Park, Yeon Su. "Well-defined ultrathin Pd films on Pt(111): electrochemical preparation and interfacial chemistry." Texas A&M University, 2003. http://hdl.handle.net/1969.1/2309.

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Well-defined ultrathin films of palladium, with coverages ranging from submonolayer, ΘPd = 0.5 monolayer (ML), to multilayer, ΘP d = 8 ML, were electrochemically deposited on Pt(111) using potentiostatic and potentiodynamic methods. In both methods, between the coverage regimes studied, the growth of the Pd films follows the Stranski-Krastanov mechanism. The interfacial electrochemical properties associated with the film-to-bulk transition were characterized by conventional voltammetric techniques in combination with low-energy electron diffraction (LEED) and Auger electron spectrosc

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46

EDRISI, KEYVAN. "Fastställande av PGM-tillgänglighet för dieseloxidationskatalysator med hjälp av kemisorption." Thesis, KTH, Skolan för kemivetenskap (CHE), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174135.

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The Diesel Oxidation Catalyst (DOC) is subjected to harsh conditions, causing its performance to diminish over time as the result of different aging mechanisms, which either decreases or lowers the accessibility to the catalyst’s active sites. Previous work using chemisorption to quantify aging progression has resulted in a reproducibility of 17%. In this study it has been attempted to lower this, while also performing performance evaluations to see if correlations exist between dispersion and Light-Off Temperature (LOT). Two catalysts have been investigated, LLC (Low Loading Catalyst) and HLC

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47

Wang, Siwen. "Orbital Level Understanding of Adsorbate-Surface Interactions in Metal Nanocatalysis." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/98923.

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We develop a theoretical framework for a priori estimation of catalytic activity of metal nanoparticles using geometry-based reactivity descriptors of surface atoms and kinetic analysis of reaction pathways at various types of active sites. We show that orbitalwise coordination numbers 𝐶𝑁<sup>α</sup> (α = 𝑠 or 𝑑) can be used to predict chemical reactivity of a metal site (e.g., adsorption energies of critical reaction intermediates) by being aware of the neighboring chemical environment, outperforming their regular (𝐶𝑁) and generalized (𝐶̅𝑁̅) counterparts with little added computational cost.

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48

Kirwan, Luke J. "An investigation of polyacrylate adsorption onto hematite." Curtin University of Technology, Department of Applied Chemistry, 2002. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=13689.

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For the majority of tailings substrates, flocculant adsorption proceeds through hydrogen bonding of the amide functionalities with neutral surfaces. However, flocculation of Bayer process residue solids takes place in highly caustic liquors, typically using high molecular weight polyacrylates. This represents an almost unique situation, and implies a totally different adsorption mechanism. Direct examination of polyacrylate adsorption within the complex matrix of real liquors and a mixture of residue phases is difficult, making it necessary to focus on a model substrate (hematite) and syntheti

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49

SCOTTI, NICOLA. "ON THE RELATIONSHIPS BETWEEN CATALYTIC ACTIVITY AND MORPHOLOGY OF THE METALLIC PHASE IN CATALYSTS PREPARED BY CHEMISORPTION-HYDROLYSIS." Doctoral thesis, Università degli Studi di Milano, 2012. http://hdl.handle.net/2434/168363.

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Chemisorption–hydrolysis (CH) represents a fruitful preparation method, as it combines the simplicity of impregnation techniques, both in terms of handiness and cheapness, with the high metal dispersion obtained by anchoring techniques. In this work different Cu, Co and Co-Cu catalysts were prepared by CH. The characterization of CH copper silica materials agree on the formation of finely dispersed phase of CuO, easily reducible to metal copper at any copper loading. In particular CH method allows to keep a great dispersion obtaining very small copper particles also to an higher metal loadin

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50

Emera, Flory. "Method development for copper dispersion evaluation and copper-based catalysts characterization." Thesis, Uppsala universitet, Strukturkemi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-206922.

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N2O chemisorption technique for copper dispersion determination was developed and optimized for accurate and reproducible results. With this technique, the bulk oxidation of pre-reduced catalyst can be prevented by N2O decomposition at low temperature (30oC). Only surface copper atoms are oxidized. The amount of freshly oxidized surface coppers is determined from H2-back-titration of fixed oxygen.The impact of temperature and time of exposure during oxidation was studied. Measurements made at higher temperature (60oC) resulted in overestimation of copper dispersion due to oxygen diffusion into

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