Metal Modified Ceo2 And Zro2 Catalysts For Nitric Oxide Decomposition And Selective Catalytic Reduction By Methane
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Author |
: Christoforos Kazazis |
Publisher |
: |
Total Pages |
: 216 |
Release |
: 1996 |
ISBN-10 |
: OCLC:190833014 |
ISBN-13 |
: |
Rating |
: 4/5 (14 Downloads) |
Synopsis Metal - Modified CeO2 and ZrO2 Catalysts for Nitric Oxide Decomposition and Selective Catalytic Reduction by Methane by : Christoforos Kazazis
Author |
: Chee Ming Chong |
Publisher |
: |
Total Pages |
: |
Release |
: 2005 |
ISBN-10 |
: OCLC:960322406 |
ISBN-13 |
: |
Rating |
: 4/5 (06 Downloads) |
Synopsis The Selective Catalytic Reduction of Nitric Oxide by Propylene Over Bimetallic CeO2-ZrO2 Supported Catalyst by : Chee Ming Chong
Author |
: Masaru Ogura |
Publisher |
: |
Total Pages |
: 171 |
Release |
: 1998 |
ISBN-10 |
: OCLC:51665625 |
ISBN-13 |
: |
Rating |
: 4/5 (25 Downloads) |
Synopsis Selective Catalytic Reduction of Nitric Oxide with Methane on Bifunctional Zeolite Catalysts by : Masaru Ogura
Author |
: Enrique Aceves |
Publisher |
: |
Total Pages |
: 232 |
Release |
: 2000 |
ISBN-10 |
: OCLC:43543165 |
ISBN-13 |
: |
Rating |
: 4/5 (65 Downloads) |
Synopsis Nitric Oxide Selective Catalytic Reduction with Methane by : Enrique Aceves
Author |
: Zhang Yanping |
Publisher |
: |
Total Pages |
: 446 |
Release |
: 1995 |
ISBN-10 |
: OCLC:34791346 |
ISBN-13 |
: |
Rating |
: 4/5 (46 Downloads) |
Synopsis Nitric Oxide Decomposition Over Metal Ion-modified Cu-ZSM-5 Catalysts by : Zhang Yanping
Author |
: |
Publisher |
: |
Total Pages |
: 12 |
Release |
: 1992 |
ISBN-10 |
: OCLC:727242529 |
ISBN-13 |
: |
Rating |
: 4/5 (29 Downloads) |
Synopsis Direct Catalytic Decomposition of Nitric Oxide by :
This project will investigate a suitable catalyst system for the direct NO decomposition, for post-combustion NO. control. The proposed process will not use a reductant, such as ammonia in case of Selective Catalytic Reduction (SCR) process for catalytic reduction of NO(subscript x) to nitrogen. This is a simplified process basically involving passing the flue gas through a catalytic converter, thus avoiding problems generally associated with the commercial Selective Catalytic Reduction (SCR) process, namely high operating cost, ammonia slip, and potential N20 emissions. A brief description of the proposed work is as follows: Catalysts will be prepared by incorporating metal cations into zeolite supports according to ion exchange procedures widely used in preparation of metal/zeolite catalysts. Zeolites will be modified to improve catalytic activity, by blocking ion exchange sites in the small pores of zeolites with promoter cations of high valence. The catalysts of primary interest include copper (Cu), palladium (Pd), platinum (Pt), silver (Ag), and nickel (Ni) exchanged zeolites.
Author |
: |
Publisher |
: |
Total Pages |
: 74 |
Release |
: 2003 |
ISBN-10 |
: OCLC:871374622 |
ISBN-13 |
: |
Rating |
: 4/5 (22 Downloads) |
Synopsis Development of Improved Catalysts for the Selective Catalytic Reduction of Nitrogen Oxides with Hydrocarbons by :
Author |
: Haibin Ning |
Publisher |
: |
Total Pages |
: 0 |
Release |
: 2022 |
ISBN-10 |
: OCLC:1369492779 |
ISBN-13 |
: |
Rating |
: 4/5 (79 Downloads) |
Synopsis Carbon Dioxide Reduction by Cerium Oxide Supported Metal Catalysts with Surface Modification by : Haibin Ning
The defects-rich cerium oxide (CeO2) supported metal oxide or metal catalysts (Cu, Co, Ni, Fe, Mn and Ru) for catalytic CO2 reduction were studied. For comparison, thermal catalysis, plasma catalysis and electrocatalysis techniques were carried out under various equilibrium and non-equilibrium experimental conditions. The effects of particle morphology, surface modification and reduction treatment on CeO2 supports and supported catalysts were also investigated and discussed to understand the underlying mechanisms in terms of the valence states, surface defects and support-catalyst interaction.A series of surface engineered CeO2 (nanorods, nanocubes, and nanoctahedra) supported metal oxide catalysts were synthesized, characterized and applied to achieve low-temperature and energy-efficient CO2 reduction. The comparison between thermal catalysis under thermodynamic equilibrium conditions and plasma catalysis under non-equilibrium conditions reveals the promotion effect of plasma on the catalytic activity of CO2 hydrogenation with the ionized gas in the plasma region via the formation of highly reactive species (i.e., vibrationally and electronically excited ions and free radicals). The effect of reduction activation treatment was examined that could change the valence states of Ru species and provide alternative reaction pathways for CO2hydrogenation, leading to higher CO2 conversion at low temperature (~95% at 150 oC) under plasma conditions. Furthermore, ~89 % CO2 conversion and ~98 % CH4 selectivity were obtained for surface modified CeO2 nanorods (mCeO2NR) supported RuOx catalysts at 150 oC, companied with excellent stability (~87 % CO2 conversion at 350 oC). Applying surface modification on the CeO2 surface generates more surface defects (oxygen vacancy, voids, and steps, etc.) as anchoring sites for Ru species and increases the thermal stability of catalyst clusters.Additionally, electrocatalytic conversion of CO2 was conducted at room temperature under atmospheric pressure with CeO2 doped RuOx catalyst films. Different CeO2 nanocrystals including pristine CeO2NR, mCeO2NR, CeO2 nanocubes (CeO2NC) and CeO2 nanoctahedra (CeO2NO) were doped into RuOx and the mCeO2NR-RuOx thin film was found to present the highest current density (166 mA/cm2 at -1.6 V vs RHE.) with the highest double-layer capacitance (100 mF/cm2) and lowest resistance from the linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry results.
Author |
: |
Publisher |
: |
Total Pages |
: 20 |
Release |
: 1785 |
ISBN-10 |
: OCLC:186999240 |
ISBN-13 |
: |
Rating |
: 4/5 (40 Downloads) |
Synopsis Sanna och falska christnas kännemärken, förnämligast af deras tal, i anledning af Christi utlåtelse, Matth. 12:34, 35. Där hjertat med fullt är, däraf talar munnen. En god människa bär godt fram af hjertans goda fatabur; och en ond människa by :
Author |
: Mark Douglas Fokema |
Publisher |
: |
Total Pages |
: 208 |
Release |
: 2000 |
ISBN-10 |
: OCLC:45132553 |
ISBN-13 |
: |
Rating |
: 4/5 (53 Downloads) |
Synopsis The Selective Catalytic Reduction of Nitrogen Oxides with Methane Using Nanocrystalline Metal Oxides by : Mark Douglas Fokema