Tesis sobre el tema "Monolithic Catalyst"
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MARIN, FIGUEREDO MIGUEL JOSE. "Metal Oxide Catalysts for the Abatement of Volatile Organic Compounds and Carbonaceous Particulate Matter". Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2966339.
Texto completoSachse, Alexander. "Synthèses de microréacteurs à base de monolithes siliciques et zéolithiques à porosité hiérarchique pour le développement de la catalyse en flux". Thesis, Montpellier, Ecole nationale supérieure de chimie, 2011. http://www.theses.fr/2011ENCM0006/document.
Texto completoThe aim of this work is the synthesis and the functionalization of silica monoliths with hierarchical porosity and their use as catalytic microreactors for flow-through chemistry. A reproducible synthesis of the silica monoliths was elaborated. The functionalization with a variety of functions has been performed, such as aminopropyl groups, aluminium oxide, MOFs (CuBTC), and palladium nanoparticles. These functionalized silica monoliths have been used for the Knoevenagel condensation, Diels-Alder reaction and Fiedländer reaction, where they show increasing productivities compared to classically used reactors (batch, packed-bed) and enable process automation. The pseudomorphic transformation of silica monoliths in zeolite monoliths in the SOD and LTA phase has been elaborated. We have preformed the first implementation of a macroporous zeolite monolith as microreactor for the fine chemical production in flow continuous conditions. The zeolite monoliths have been tested for dynamic ion exchange and are promising materials for the use as decontaminants of radioactive discharges
Kebe, Seydina Ibrahima. "Synthèse de matériaux monolithiques pour la séparation et la catalyse en phase liquide : problématiques environnementales et du développement durable". Thesis, Paris Est, 2016. http://www.theses.fr/2016PESC1127/document.
Texto completoPolymeric materials have gained immense popularity with the golden age of petroleum and they still today meet with great success through Green polymer chemistry approaches and numerous high added value dedicated application in scientific domains such as analytical chemistry, medicine, space investigations, where one of the key for success is the design of miniaturized objects. In this contribution, micro-sized monolithic materials have been designed though either in microchannel immobilization (I.D. = 75 µm) or surface attachment on glass substrates (hundredths of microns in thickness). Polymers exhibiting monolithic morphology were considered to benefit of high permeability, mechanical and thermal resistances which are mandatory to flow chemistry applications. With the aim to control the interfacial interaction ability, a generic monolith having N-hydroxysuccinimide ester groups was used and on purpose functionalized. Molecular segments acting as selector – for electrochromatographic applications – of metal nanoparticles ligands – for supported catalysis applications – have been immobilized on the monolith surface via classical (nucleophilic substitution) or original (photo-induced thiol-ene click) grafting reactions.The so-designed materials were characterized through spectroscopic, microscopic, diffraction, thermogravimetric methods providing insight into correlation between the observed separation and catalytic abilities and the interfacial structure of the monolith. As representative examples of application, one may cite the electrochromatographic separation of toxic molecules such as organic pollutants (phenols, anilines, polycyclic aromatic hydrocarbons, polychlorobiphenyls), preservatives in cosmetics (parabens) and biomarkers (polycyclic aromatic hydrocarbons, pyrimidic bases). The analyses were conducted on model solutions and complex matrices (cosmetics, extraterrestrial analog samples). Flow catalytic reaction meant for the reduction of nitroarenes, the oxidation of aromatic alcohol, the carbon-carbon coupling and the sensitive detection of pesticides and synthesis intermediates (para-nitrophenol) have been achieved
Bennett, Chris. "Monolith reactors for automobile catalysts". Thesis, University of Bath, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236643.
Texto completoBernadet, Sophie. "Conversion photocatalytique du CO2 sur monolithes poreux". Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0172/document.
Texto completoIn the current context of developing novel non-fossil energy sources while minimizing the environmental impact, solar-driven-fuel-production by exploiting anthropogenic CO2 emissions appears to be a solution with great potential. The main challenge in artificial photo-induced processes concerns the two-dimensional character of the systems used, due to the low photon penetration depth. This thesis work focuses on the development of alveolar solid foams, derived from integrative chemistry and bearing a hierarchically organized porosity. By TiO2 precursor impregnation, self-standing photocatalysts were synthesized and provided a photon penetration increase by an order of magnitude. Moreover, these solids limit back-reactions by a dilution effect, while ensuring high selectivity towards alkane generations. A kinetic model, based on a mixed formalism of Langmuir-Hinshelwood and Eley-Rideal, is proposed to describe material behavior
Kumar, Ankan. "Physical Models and Computational Algorithms for Simulation of Catalytic Monolithic Reactors". The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1230142666.
Texto completoLeclerc, Jean-Pierre. "Contribution à l'étude du fonctionnement des pots catalytiques". Vandoeuvre-les-Nancy, INPL, 1991. http://docnum.univ-lorraine.fr/public/INPL_T_1991_LECLERC_J_P.pdf.
Texto completoYamin, A. K. M. "Pulsating flow studies in a planar wide-angled diffuser upstream of automotive catalyst monoliths". Thesis, Coventry University, 2012. http://curve.coventry.ac.uk/open/items/e82aae35-8737-48e2-b73d-4758a88f5e1a/1.
Texto completoCACIOLLI, Lorenzo. "Progettazione e preparazione di nuovi materiali per applicazioni sostenibili in chimica organica e ambientale". Doctoral thesis, Università degli studi di Ferrara, 2014. http://hdl.handle.net/11392/2389404.
Texto completoQuadri, Syed Saleem. "The effect of oblique entry into an automotive catalyst on the flow distribution within the monolith". Thesis, Coventry University, 2008. http://curve.coventry.ac.uk/open/items/bccfd1aa-e70b-7608-3d41-121b43630c1d/1.
Texto completoJacoby, Jürgen. "Experimental Investigation of Catalytic Combustion of Simulated Gasified Biomass for Gas Turbine Applications". Doctoral thesis, KTH, Energy Technology, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3234.
Texto completoCecilia, Raúl [Verfasser]. "An approach to a process intensification by combination of microwave assisted heterogeneous catalysis and polymer-glass monolithic microreactors / vorgelegt von Raúl Cecilia". [Clausthal-Zellerfeld] : [Univ.-Bibliothek], 2007. http://d-nb.info/986323772/34.
Texto completoNavlani-García, Miriam. "Preparation of zeolite-based catalysts and zeolite thin films for environmental applications". Doctoral thesis, Universidad de Alicante, 2014. http://hdl.handle.net/10045/46105.
Texto completoKaratzas, Xanthias. "Rhodium diesel-reforming catalysts for fuel cell applications". Doctoral thesis, KTH, Kemisk teknologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-32647.
Texto completoQC 20110418
El, Assal Z. (Zouhair). "Synthesis and characterization of catalysts for the total oxidation of chlorinated volatile organic compounds". Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526221267.
Texto completoTiivistelmä Haitallisten kloorattujen orgaanisten yhdisteiden (CVOC) päästöt ovat ihmisten aiheuttamia. CVOC-yhdisteitä käytetään mm. liuottimina lääkeaineiden valmistuksessa ja kofeiinin poistossa. Nykyisin CVOC-päästöjä rajoitetaan tiukalla lainsäädännöllä. Näistä syistä tehokas CVOC-yhdisteiden käsittelymenetelmä on tarpeen. Katalyyttinen hapetus on hyvä vaihtoehto tähän tarkoitukseen, koska katalyytit voidaan räätälöidä niin, että puhdistuksen tehokkuus saadaan maksimoitua samalla kun ei-haluttujen tuotteiden, kuten dioksiinit ja kloorikaasu, muodostuminen voidaan minimoida. Tämän väitöskirjatyön tavoitteena oli selvittää katalyyttien fysikaalis-kemiallisten ominaisuuksien yhteyksiä dikloorimetaanin (DCM) hapetukseen. Tavoitteen saavuttamiseksi valmistettiin useita katalyyttejä, jotka karakterisoitiin ja testattiin DCM:n kokonaishapetuksessa. Työssä tutkittiin neljää jauhemaista metallioksidia (γ-Al2O3, TiO2, CeO2 ja MgO), kolmea metallioksidiseosta (Al2O3-xSiO2), jotka pinnoitettiin kordieriittimonoliitille, sekä neljää aktiivista ainetta: Pt, Cu, V and Mn. Aluksi työssä keskityttiin tukiaineiden ominaisuuksiin. Työn tulokset osoittivat, että DCM:n konversio ja HCl:n tuotanto ovat riippuvaisia tukiaineen happamuudesta. Paras tulos saavutettiin alumiinioksidilla, jolla oli korkein kokonaishappamuus. Lisäksi havaittiin, että sivutuotteiden laatu riippuu tukiaineen pinnalla olevien happopaikkojen tyypistä. Aktiivisen aineen impregnointi tukiaineeseen paransi materiaalin selektiivisyyttä. Tutkituista aineista Pt osoittautui parhaimmaksi, mutta myös V2O5 ja CuO olivat lähes yhtä hyviä. Erityisesti CuO-katalyytti, joka tuotti vähemmän sivutuotteita ja joka on materiaalina vähemmän haitallinen kuin V2O5, osoittautui lupaavaksi jalometallikatalyyttien korvaajaksi. Materiaalien stabiilisuuteen liittyen Pt/Al2O3-katalyytin toiminnassa ei havaittu muutoksia 55 tunnin testauksen jälkeen. Lisäksi CuCl2:n muodostuminen ei mallinnuksen mukaan ole termodynaamisesti todennäköistä tutkituissa reaktio-olosuhteissa. Jauhemaisen katalyytin hyvät ominaisuudet pystyttiin pinnoituksessa siirtämään monoliittirakenteiseen katalyyttiin. Pt/90Al2O3-10SiO2 -katalyytin aktiivisuus DCM:n hapetuksessa tehostui, kun monoliitin aukkoluku kasvoi aiheutuen suuremmasta geometrisestä pinta-alasta ja mekaanisesta eheystekijästä sekä pienemmästä avoimen pinnan osuudesta ja termisestä eheystekijästä
Pariente, Stéphane. "Valorisation du bioéthanol et du glycérol par catalyse hétérogène". Montpellier 2, 2008. http://www.theses.fr/2008MON20187.
Texto completoOxygenates have shown interesting properties as diesel fuel additives in reducing the emissions of a diesel engine. The synthesis of new oxygenate molecules from glycerol and bioethanol has been then studied. The one pot synthesis of diethoxyethane and butanol from ethanol only as been done on mixed oxide catalysts as well as on mixed oxide supported on carbon nanotubes. Etherification of glycerol with ethanol has also been studied on various heterogeneous acid catalysts in order to obtain selectively 1-ethoxy-2,3-propanediol. This mono-ether has then been used for an acetalization reaction with acetaldehyde to give a mixture of dioxane/dioxolane products well suited for a diesel blending. Results obtained for the etherification reaction allowed us to propose a reaction mechanism and define the characteristics of an “ideal” catalyst. Acetalization reaction with acetaldehyde led us to use a new type of catalyst synthesized in the laboratory: functionalized silica monoliths. The various interesting properties of those materials opened multiple developments for the studied reaction as well as for a large number of organic chemistry reactions
MONCADA, QUINTERO CARMEN WILLIANA. "Ceramic open cell foams as catalytic support for endothermic and exothermic reactions: Focus on lean methane combustion". Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2929756.
Texto completoGupta, Saurabh. "Selective Catalytic Reduction (SCR) of nitric oxide with ammonia using Cu-ZSM-5 and Va-based honeycomb monolith catalysts effect of H2 pretreatment, NH3-to-NO ratio, O2, and space velocity /". Texas A&M University, 2003. http://hdl.handle.net/1969/526.
Texto completoHaimad, N. "A theoretical and experimental investigation of the flow performance of automotive catalytic converters". Thesis, Coventry University, 1997. http://curve.coventry.ac.uk/open/items/3f51aa95-571c-73d5-bee3-4b523cab0a1c/1.
Texto completoHONEMANN, YVONNE CARINA. "DESIGN, CHARACTERIZATION AND APPLICATION OF HETEROGENEOUS SILICA SUPPORTED CATALYSTS, BASED ON PD NANOPARTICLES AND METAL SINGLE SITES (RH, CU)". Doctoral thesis, Università degli Studi di Milano, 2013. http://hdl.handle.net/2434/214937.
Texto completoHsu, Jing-Ching y 徐菁卿. "Monolithic catalyst Coated with Nano Metal-oxides for NO Reduction with H2 as a Reducing Agent". Thesis, 2005. http://ndltd.ncl.edu.tw/handle/22643635544905872186.
Texto completo國立成功大學
化學工程學系碩博士班
93
Monolithic catalysts have been widely applied to abate exhaust gases. Because of the shape, the honeycomb gives a low pressure drop and its catalyst layer does not attrition the fluid.It can be used as a reactor directly.On the other hand,nano-particle technology is appropriate for producing high performance catalysts. The nano- catalysts prossess a markedly higher activity and selectivity compared with the conventional ones. The nano-catalysts can be also used for reactions at relativity low temperatures, thereby reducing energy consumption. In this study, for catalyzing the reduction of nitric oxide with hydrogen as a reducing agent, the cordierite monolith was coated with several kinds of supported metal oxides first. Then the activities of the prepared catalysts were evaluated by a monolithic reactor.The best catalyst was screened from those prepared. The causes for different activities were also closely examined basing on the result of catalyst characterization. Experimental results indicate that active species of coating layer,support of coating layer,method of preparing the support, calcination temperature,and pretreatment all are important factors affecting catalyst activity. The results of activity test indicate that coating a γ-alumina layer with sol-gel coating method and loading 14 wt% copper with deposition-precipitation method give the highest activity. The surface area of γ-Al2O3/monolith,of which γ-Al2O3 was made by sol-gel coating and calcined at 500℃, is the largest and the catalyst thus prepared is more active than those prepared by other methods.The XRD patterns, reveal that the particle-size of alumina prepared with sol-gel coating is smaller then those prepared by another method. The SEM graphs show that the sizes of γ-Al2O3 particles prepared by various methods are all in the nano range. At the end of this study, the activities and stabilities of the powder catalyst and the monolithic catalyst were compared. The results show that monolithic catalyst has a better performance and hence has a potential for being applied to air pollution control.
Huei-Du, Hung y 洪惠肚. "Catalytic incineration of aromatic hydrocarbons over nano powder cerium oxide and monolithic catalyst coated with nano cerium oxide". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/68166532106861652880.
Texto completo高苑科技大學
高分子環保材料研究所
94
In this study, the performance of nanosized CeO2 used as catalysts for the catalytic incineration of aromatic hydrocarbons was investigated. We tested the efficacy of seven metal oxide catalysts in the catalytic incineration of aromatic hydrocarbons and found CeO2 to be the most active of the seven. With the use of CeO2, complete oxidation of toluene was achieved at 240 ℃. There was a similar outcome in the incineration of p-xylene, whereas benzene was more refractory. In preparation of the CeO2 catalyst, four different methods were evaluated; a redox reaction in hydrogen peroxide was found to produce the most active catalyst. This is because CeO2 prepared using this method (designated as CeO2-A) had the smallest crystallite size and the largest BET surface area, both characteristics that confer higher activity. O2-TPD and toluene-TPD also demonstrated the superior activity of the CeO2-A catalyst, as it was best able to adsorb both toluene and O2. The effect of calcination temperature was also assessed to find the optimal preparation conditions. CeO2 calcined at 500 ℃ was the most active catalyst; its higher activity can be attributed to its smallest crystallite size and hence largest surface area. In the reaction, a higher reaction temperature was necessary for 100% conversion of toluene at higher values of weight hourly space velocity (WHSV) and higher toluene concentrations. For the catalytic incineration of aromatic hydrocarbons, nanosized CeO2 was coated to honeycomb support by redox reaction in hydrogen peroxide and the used as the support to prepare several kinds of supported metal-oxide catalysts by incipient wetness impregnation method. Then the activities of the honeycomb catalysts were evaluated by a fixed bed reactor. Experimental results indicate that active species of coating layer, calcination temperature are important factors affecting catalyst activity. The results of activity test indicate that coating a CeO2 layer with redox reaction in hydrogen peroxide coating method and loading 0.3 wt% palladium with incipient wetness impregnation method give the highest activity. At the end of this study, the activities and stabilities of the powder catalyst and the monolithic catalyst were compared. The results show that monolithic catalyst has a better performance and hence has a potential for being applied to air pollution control.
Sharma, Sudanshu. "Gas Phase And Electrocatalytic Reaction Over Pt, Pd Ions Substituted CeO2, TiO2 Catalysts and Electronic Interaction Between Noble Metal Ions And The Reducible Oxide". Thesis, 2009. http://hdl.handle.net/2005/697.
Texto completoKim, Hakyong. "Characterizing monolithic Lean NO[x in subscript] Trap catalysts using a bench-flow reactor". 2006. http://etd.utk.edu/2006/KimHakyong.pdf.
Texto completoTitle from title page screen (viewed on Sept. 18, 2006). Thesis advisor: Ke Nguyen. In abstract [gamma] is lower case Greek letter. Vita. Includes bibliographical references.
Deverell, JA. "Porous polymer monolith supported Suzuki-Miyaura catalysis in microreactors". Thesis, 2011. https://eprints.utas.edu.au/12430/1/Front-JAD_Final_PhD_Thesis_Sept_2011.pdf.
Texto completoSchwiedernoch, Renate [Verfasser]. "Partial and total oxidation of methane in monolithic catalysts at short contact times / vorgelegt von Renate Schwiedernoch". 2005. http://d-nb.info/976886464/34.
Texto completoHou, Xuxian. "Development of Spatially-Resolved FTIR – Gas Concentration Measurements inside a Monolith-Supported Selective Catalytic Reduction Catalyst". Thesis, 2013. http://hdl.handle.net/10012/7609.
Texto completoShakir, Osama. "Spatially and Temporally Resolving Concentration and Temperature Profiles within a Fresh and a Thermally-Aged Monolith Catalyst". Thesis, 2008. http://hdl.handle.net/10012/4171.
Texto completoWu, Ching-Ching y 吳青青. "Preparation of Pellets and Monolithic Catalysts Using Bentonite and TiO(OH)2 as the Bi-support for Low Temperature NH3-SCR". Thesis, 2016. http://ndltd.ncl.edu.tw/handle/21269856365854130618.
Texto completo國立交通大學
環境工程系所
104
Selective catalytic reduction of nitrogen oxides with NH3 is one of the most effective methods for removal of NOx from flue gases. In the SCR studies, TiO2 is developed as a superior support that exhibts high reactivity; however, it has no plasticity to extrude monolith applying on the field. Bentonite (clays) appears to have a relevant role as an inorganic binder and support. However, previous report showed that unmodified clays did not have great NO removal. Therefore, the aim of this research is to combine bentonite and TiO2 as bi-support, and then the catalysts were prepared by co-precipitation method. The NO conversion efficiencies of pellets and monolithic catalysts are discussed. To find out the best ratio of bi-supports, catalysts with high loading on the monolith and sucessful extruded monoliths were tested. The results show that bentonite-TiO2 catalysts had higher NO conversions than literature data which used unmodified Bentonite as support of SCR catalysts. The catalyst loading test on the monolithic showed that MnFe/TiO2 had low viscosity and less loading amount. However, bentonite:TiO2 ratios of 1:1, 1:2 and 1:3 have high viscosity and the highest loading amounts. In addition, MnFe/Bentonite:TiO¬2=1:3 could approach high NO conversion by only one time washcoat.
Κουτσοδόντης, Κωνσταντίνος. "Η επίδραση του πάχους και της μεθόδου εναπόθεσης του καταλυτικού υμενίου στο φαινόμενο της ηλεκτροχημικής ενίσχυσης και νέοι ηλεκτροχημικά ενισχυόμενοι αντιδραστήρες για τη μελέτη αντιδράσεων περιβαλλοντικού ενδιαφέροντος". Thesis, 2008. http://nemertes.lis.upatras.gr/jspui/handle/10889/921.
Texto completoThe effect of Electrochemical Promotion of Catalysis (EPOC or NEMCA effect) is a phenomenon where application of small currents or potentials (±2 V) alters the activity and selectivity of catalysts supported on ionic or mixed ionic-electronic conductors and modifies the electronic and thus catalytic properties in a controllable, reversible and to some extent predictable manner. The effect of catalyst film thickness on the magnitude of electrochemical promotion (ρ and Λ values) has not been studied experimentally so far but a mathematical model has been developed, accounting for surface diffusion and reaction of the promoting species, which predicts a strong variation of ρ and Λ with catalyst film thickness L. In the present thesis is examined for the first time experimentally the effect of catalyst film thickness on the magnitude of the EPOC, using porous Pt catalyst-electrodes prepared from Engelhard Pt paste with thicknesses in the range 0.2 to 1.4 μm. It was found that increasing the thickness of porous catalyst films used in electrochemical promotion studies causes a decrease in the rate enhancement ratio, ρ, due to the gradual axial decrease from the three-phase-boundaries to the top of the film of the surface concentration of the promoting backspillover O2- species which diffuse and react on the porous catalyst surface. Increasing film thickness causes a moderate increase in the Faradaic efficiency, Λ, which can be predicted by the parameter 2Fro/I0. The ρ and Λ behaviour is in good agreement with the analytical model prediction and provides additional support for the O2- promoter reaction-diffusion model and for the sacrificial promoter mechanism of electrochemical promotion. Most electrochemical promotion studies have been carried out so far with thick (0.1 μm to 5 μm) porous metal catalyst films with a roughness factor of the order of 500 and small (typically less than 0.1%) metal dispersion, deposited on solid electrolytes using a variety of deposition techniques. Very recently, electropromotion studies have been extended to thin (40 nm) sputter coated porous metal catalysts with metal dispersion of the order of 10 to 30%. The effect of thickness with such thin (30 to 90 nm) sputtered Pt catalyst-electrodes on the magnitude of electrochemical promotion is discussed, as well as the effect of the catalyst deposition method (Sputtering, Pulsed Laser Deposition and Vapor Deposition) using the model reaction of ethylene oxidation. Rate enhancement ratio, ρ, values up to 440 and Λ values up to 1000 where obtained for the sputtered films, in agreement with the sacrificial promoter and diffusion-reaction models of EPOC which predict increase in ρ value with thinner films. An environmental interest reaction, the reduction of NO by ethylene in the presence of excess oxygen, was investigated in a recently developed MEPR. In this novel dismantlable monolithic-type electrochemically promoted catalytic reactor, thin (~40 nm) porous catalyst films are sputter-deposited on thin (0.25 mm) parallel solid electrolyte plates supported in the grooves of a ceramic monolithic holder and serve as electropromoted catalyst elements. Using Pt-Rh(1:1)/YSZ/Au-type catalyst elements, the 8-plate reactor operated with apparent Faradaic efficiency exceeding unity achieving significant and reversible enhancement in the rates of C2H4 and NO consumption in presence of up to 10% O2 in the feed at gas flow rates up to 1000 cc/min. The Pt-Rh co-sputtered films exhibited very good performance in terms of stability and selectivity for N2 formation, i.e. practically 100% under all reaction conditions. The reactor, which is a hybrid between a monolithic catalytic reactor and a flat-plate solid oxide fuel cell, permits easy practical utilization of the electrochemical promotion of catalysis.
THOMAS, EDWARD ANTHONY. "Characterization of Thermo-Fluid Transport Properties of Coated and Uncoated Open-Cell Metal Foam Monoliths". Thesis, 2011. http://hdl.handle.net/1974/6904.
Texto completoThesis (Master, Chemical Engineering) -- Queen's University, 2011-12-12 20:11:18.046
Σουεντίε, Σταμάτιος. "Νέοι αντιδραστήρες και λεπτά υμένια για την πρακτική εφαρμογή του φαινομένου της ηλεκτροχημικής ενίσχυσης της κατάλυσης σε αντιδράσεις περιβαλλοντικού ενδιαφέροντος". Thesis, 2009. http://nemertes.lis.upatras.gr/jspui/handle/10889/1580.
Texto completoElectrochemical Promotion of Catalysis (EPOC or Non-Faradaic Electrochemical Modification of Catalytic Activity, NEMCA effect) is a phenomenon where the application of small currents or potentials (±2V) alters the activity and selectivity of catalysts supported on ionic or mixed ionic-electronic conductors and modifies the catalytic activity and selectivity, in a controllable, reversible and to some extend predictable manner. As shown by numerous surface science techniques, including STM, electrochemical promotion is due to electrochemically controlled migration (backspillover) of promoting or poisoning ionic species (Oδ- in the case of YSZ) between the ionic or mixed ionic-electronic conductor and the gas exposed catalytic surface. The utilization of electrochemical promotion of catalysis, in order to tackle one of the most difficult and challenging problems of heterogeneous catalysis, which is the NO reduction under high excess oxygen (10%), has been performed. This gas mixture is a typical mixture in a lean-burn engine (or Diesel engine) exhaust. In this study, a recently developed and improved monolithic electrochemically promoted reactor (MEPR) has been used, equipped with 22 thin (~40 nm catalyst-electrode thickness) electrochemical catalytic elements Rh/YSZ/Pt type. It was found that there is an optimum operation temperature of the reactor, in the range from 220oC to 240oC, where the maximum electropromotion effect occurs, even under these extremely oxidizing conditions (air/fuel ratio = 16.7 and oxygen excess = 9.43%). In this narrow temperature window the selectivity to N2 was almost 100% since the production of the undesired N2O and NO2 was almost undetectable. Also, the use of thin catalytic Pt electrodes with skeletal structure (Ptskeletal/ YSZ/Au) was examined in the MEPR for the model reaction of C2H4 oxidation. It was found that such skeletal structure electrodes are catalytically active and can be electropromoted even under high gas flow rates (25 l/min) or high space velocity (HSV~12000 h-1), close to those that the industrial reactors operate. The electrochemical promotion of the CO2 hydrogenation reaction was also examined, towards methane production using Rh/YSZ/Pt type electrochemical catalytic elements. It was found that the reaction rates can be enhanced and similarly the selectivity to CH4 which found to increase upon polarization. Finally, the effect of electrochemical promotion was examined in the study of the SO2 oxidation to SO3 reaction, which is a very important reaction by industrial (H2SO4 production) and environmental point of interest. The monolithic reactor was equipped with 5 or 22 thin (~40 nm) Pt/YSZ/Au type electrocatalytic elements. It was found that electrochemical promotion can be obtained by positive polarization even under high hourly space velocities (14000 h-1), close to those that the industrial reactors operate, with relatively high SO2 conversions.