Colussi, A. J. and Amorebieta, V. T. (1995) Arrested Formation of Carbon Oxides in Programmed Oxidation of Methane on Nonstoichiometric Samaria. Journal of Physical Chemistry, 99 (38). pp. 13921-13925. ISSN 0022-3654. doi:10.1021/j100038a025. https://resolver.caltech.edu/CaltechAUTHORS:20150623-154804125
Full text is not posted in this repository. Consult Related URLs below.
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20150623-154804125
Abstract
CO_x species evolved during transient exposure of Sm_2O_3 catalysts to very low pressure CH_4/O_2 mixtures are monitored in real time by molecular beam mass spectrometry at 1100 K. The rise of m/z = 28 and 44 signals is significantly delayed relative to the onset of CH_4 decay only on substoichiometric Sm_2O_(3-γ) samples. This observation rules out CO and CO_2 as primary products of methane heterogeneous oxidation and implies that their immediate precursor, most probably CH_3(g), is slowly oxidized during the initial stages of Sm_2O_(3-γ) surface reconstruction. Present results suggest the possibility of suppressing carbon oxides in the oxidative dimerization of methane by dynamic control of selective site populations.
| Item Type: | Article | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Related URLs: |
| |||||||||
| ORCID: |
| |||||||||
| Additional Information: | © 1995 American Chemical Society. Received: February 24, 1995; In Final Form: June 5, 1995. This project was financially supported by CONICET-Argentina, under grant PID-1131/91. | |||||||||
| Funders: |
| |||||||||
| Issue or Number: | 38 | |||||||||
| DOI: | 10.1021/j100038a025 | |||||||||
| Record Number: | CaltechAUTHORS:20150623-154804125 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20150623-154804125 | |||||||||
| Official Citation: | Arrested Formation of Carbon Oxides in Programmed Oxidation of Methane on Nonstoichiometric Samaria A. J. Colussi and V. T. Amorebieta The Journal of Physical Chemistry 1995 99 (38), 13921-13925 DOI: 10.1021/j100038a025 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 58507 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 26 Jun 2015 15:07 | |||||||||
| Last Modified: | 10 Nov 2021 22:06 |
Repository Staff Only: item control page
