Author: Paul James MillingtonPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
An Investigation of the Selective Catalytic Reduction of Nitrogen Monoxide by Hydrocarbons Under Oxidising Conditions
Author: Paul James MillingtonCatalytic Reduction of Nitrogen Monoxide Using Hydrogen at Low Temperatures Under Lean Burn Conditions
Author: Marc David ColemanNitrogen oxides (NOx) why and how they are controlled
Author: Publisher: DIANE Publishing
ISBN: 1428902805
Category :
Languages : en
Pages : 57
Book Description
Kinetics and Mechanistic Studies of Hydrocarbon Oxidation and Selective Catalytic Reduction of NOx in Monolith Reactors
Author: Richa RajPublisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages :
Book Description
The integrated LNT/SCR system is a promising technology for the reduction of NOx emission from the exhaust of lean-burn or diesel engine vehicles. The LNT/SCR operating concept involves the storage of NOx during the lean phase while unreacted hydrocarbons (C3H6, C2H4 etc.) and generated NH3 exit the LNT during the rich phase. In addition to NH3, olefinic hydrocarbons and/or partially oxidized species that break through the LNT may also adsorb on the SCR catalyst leading to additional NOx reduction by those species. In first part of the work, we performed bench-flow reactor and in-situ DRIFTS experiments to elucidate the propylene + NO + O2 reaction system on Cu-SSZ13 (chabazite) monolithic catalyst. Experiments were conducted under both steady state and transient conditions for application relevant feed conditions. Based on the bench-flow reactor studies and in-situ DRIFTS experiments a phenomenological reaction mechanism is proposed that involves reaction between oxygenates (partially oxidized hydrocarbon species) and NO to form isocyanates species ( -NCO), detected by DRIFTS which are further reduced to N2. The experimental work is followed by developing a mechanistic-based kinetic model is developed for selective catalytic reduction of NO with C3H6 on Cu chabazite (Cu-SSZ13) monolithic catalyst based on bench scale flow reactor studies and in-situ DRIFTS measurements. The kinetic model was developed in steps, starting with steady-state CO oxidation, followed by C3H6 oxidation, and then the C3H6 + NO + O2 reaction system. The models for CO+O2, C3H6+O2 and C3H6+NO+O2 were also validated using a new set of steady state experiments. The model provides insight about non-NH3 pathways (hydrocarbons, oxygenates, isocyanates etc.) for NOx reduction across the SCR. Finally, we developed a global kinetic model for co oxidation of CO and C3H6 over Pt/Al2O3 monolithic catalyst. The kinetic model developed is used to elucidate the dynamic and steady state hysteresis behavior observed during oxidation of CO+C3H6 mixture on Pt/Al2O3.
Selective Catalytic Reduction of NOx
Author: Oliver KröcherPublisher: MDPI
ISBN: 3038973645
Category : Electronic books
Languages : en
Pages : 281
Book Description
This book is a printed edition of the Special Issue "Selective Catalytic Reduction of NOx" that was published in Catalysts
An Investigation of the Selective Oxidation of NH3 to N2 by Al3O3-supported Metal Oxide Catalysts Under Oxidising Conditions
Author: Matthieu AmblardAbatement of Nitric Oxide by Catalytic Decomposition and Selective Catalytic Reduction with Hydrocarbons
Author: Kari EränenPublisher:
ISBN: 9789521214219
Category : Nitric oxide
Languages : en
Pages : 59
Book Description
Selective Catalytic Reduction of Nitrogen Oxides by Oxygenated Hydrocarbons
Author: Stephen Grenville MastersPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
NOx Reduction with Hydrocarbons Under Oxidizing Conditions Over Alumina Supported Metal Catalysts
Author: Erol SekerMetal Oxides in Heterogeneous Catalysis
Author: Jacques C. VedrinePublisher: Elsevier
ISBN: 0128116323
Category : Technology & Engineering
Languages : en
Pages : 620
Book Description
Metal Oxides in Heterogeneous Catalysis is an overview of the past, present and future of heterogeneous catalysis using metal oxides catalysts. The book presents the historical, theoretical, and practical aspects of metal oxide-based heterogeneous catalysis. Metal Oxides in Heterogeneous Catalysis deals with fundamental information on heterogeneous catalysis, including reaction mechanisms and kinetics approaches.There is also a focus on the classification of metal oxides used as catalysts, preparation methods and touches on zeolites, mesoporous materials and Metal-organic frameworks (MOFs) in catalysis. It will touch on acid or base-type reactions, selective (partial) and total oxidation reactions, and enzymatic type reactions The book also touches heavily on the biomass applications of metal oxide catalysts and environmentally related/depollution reactions such as COVs elimination, DeNOx, and DeSOx. Finally, the book also deals with future trends and prospects in metal oxide-based heterogeneous catalysis. Presents case studies in each chapter that provide a focus on the industrial applications Includes fundamentals, key theories and practical applications of metal oxide-based heterogeneous catalysis in one comprehensive resource Edited, and contributed, by leading experts who provide perspectives on synthesis, characterization and applications