Apparatus for efficient utilization of isotopically-labeled gases in pulse transient studies of heterogeneously catalyzed gas phase reactions

2017 ◽  
Vol 2 (4) ◽  
pp. 512-520 ◽  
Author(s):  
Adrianna Brush ◽  
Shallaco McDonald ◽  
Robin Dupré ◽  
Shruti Kota ◽  
Gregory M. Mullen ◽  
...  
Keyword(s):  
Steady State ◽  
Kinetic Analysis ◽  
Gas Phase ◽  
Gas Phase Reactions ◽  
Efficient Utilization ◽  
Transient Techniques ◽  
Isotopic Transient Kinetic Analysis

Transient techniques, such as steady state isotopic transient kinetic analysis (SSITKA), are powerful methods for determining various mechanistic and kinetic insights into heterogeneously catalyzed gas-phase reactions.

Multiproduct Steady-State Isotopic Transient Kinetic Analysis of the Ethanol Coupling Reaction over Hydroxyapatite and Magnesia

ACS Catalysis ◽  
2015 ◽  
Vol 5 (3) ◽  
pp. 1737-1746 ◽  
Author(s):  
Sabra Hanspal ◽  
Zachary D. Young ◽  
Heng Shou ◽  
Robert J. Davis
Keyword(s):  
Steady State ◽  
Kinetic Analysis ◽  
Coupling Reaction ◽  
Isotopic Transient Kinetic Analysis

Gas Phase Reactions in Horizontal MOCVD Reactors

1987 ◽  
Vol 94 ◽  
Author(s):  
Hitoshi Tanaka ◽  
J. Komeno
Keyword(s):  
Steady State ◽  
Gas Phase ◽  
Chemical Reactions ◽  
Chemical Species ◽  
Kinetic Simulation ◽  
Gas Phase Reactions ◽  
Mocvd Reactor

ABSTRACTWe have applied kinetic simulation to MOCVD chemistry in a horizontal MOCVD reactor. Both chemical reactions and material diffusion are considered. For trimethylgallium decomposition, concentrations of chemical species reach their steady state values which differ largely from the equilibrium values.

Quantification of Reactive CO and H2 on CuOx-CeO2 during CO Preferential Oxidation by Reactive Titration and Steady State Isotopic Transient Kinetic Analysis

ACS Catalysis ◽  
2011 ◽  
Vol 1 (5) ◽  
pp. 519-525 ◽  
Author(s):  
Rong Zhang ◽  
Tala Haddadin ◽  
Diana P. Rubiano ◽  
Hari Nair ◽  
Christopher S. Polster ◽  
...  
Keyword(s):  
Steady State ◽  
Kinetic Analysis ◽  
Preferential Oxidation ◽  
Co Preferential Oxidation ◽  
Isotopic Transient Kinetic Analysis

CO Oxidation Catalyzed by Pd-doped BaCeO3: Coexistence of Langmuir-Hinshelwood and BaCeO3-mediated Mechanisms

2009 ◽  
Vol 1217 ◽  
Author(s):  
Xiaoying Ouyang ◽  
Susannah Scott
Keyword(s):  
Steady State ◽  
Co Oxidation ◽  
Kinetic Analysis ◽  
Lattice Oxygen ◽  
Rate Law ◽  
Langmuir Hinshelwood Mechanism ◽  
Reaction Orders ◽  
Isotopic Transient Kinetic Analysis ◽  
Lean Conditions

AbstractThe rate law for CO oxidation over Pd-substituted BaCeO3 was studied. Under CO-rich conditions over a range of pressures and temperatures, changing reaction orders for both CO and O2 suggest the coexistence of both Langmuir-Hinshelwood and BaCeO3-mediated mechanisms. The latter dominates at high P(CO)/P(O2), while both mechanisms contribute significantly at low P(CO)/P(O2). Under CO-lean conditions, the Langmuir-Hinshelwood mechanism dominates the kinetics. The importance of the BaCeO3-mediated mechanism increases with temperature. Steady-state isotopic transient kinetic analysis (SSITKA) using 18O2 confirmed the participation of labile lattice oxygen, thus BaCeO3 behaves as a BaO-stabilized form of CeO2.

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