De-oxygenation of CO2 by using Hydrogen, Carbon and Methane over Alumina-Supported Catalysts

Abstract

<p>The de-oxygenation of CO2 was explored by using hydrogen, methane, carbon etc., over alumina supported catalysts. The alumina-supported ruthenium, rhodium, platinum, molybdenum, vanadium and magnesium catalysts were first reduced in hydrogen atmosphere and then used for the de-oxygenation of CO2. Furthermore, experimental variables for the de-oxygenation of CO2 were temperature (range 50 to 650 oC), H2/CO2 mole ratios (1.0 to 5), and catalyst loading (0.5 to 10 wt %). During the de-oxygenation of CO2 with H2 or CH4 or carbon, conversion of CO2, selectivity to CO and CH4 were estimated. Moreover, 25.4 % conversion of CO2 by hydrogen was observed over 1 wt% Pt/Al2O3 catalyst at 650 oC with 33.8 % selectivity to CH4. However, 8.1 to 13.9 % conversion of CO2 was observed over 1 wt% Pt/Al2O3 catalyst at 550 oC in the presence of both H2 and CH4. Moreover, 42.8 to 79.4 % CH4 was converted with 9 to 23.1 % selectivity to CO. It was observed that the de-oxygenation of CO2 by hydrogen, carbon and methane produced carbon, CO and CH4. © 2012 BCREC UNDIP. All rights reserved</p><p><em>Received: 6th February 2012; Revised: 23rd April 2012; Accepted: 24th April 2012</em></p><p>[<strong>How to Cite</strong>: R. Y. Raskar, K. B. Kale, A. G. Gaikwad. (2011). De-oxygenation of CO2 by using Hydrogen, Carbon and Methane over Alumina-Supported Catalysts. <em>Bulletin of Chemical Reaction Engineering & Catalysis</em>, 7 (1): 59-69. <strong>doi:10.9767/bcrec.7.1.1631.59-69</strong>]</p><p><strong>[How to Link / DOI:</strong> <a href="http://dx.doi.org/10.9767/bcrec.7.1.1631.59-69" target="_self">http://dx.doi.org/10.9767/bcrec.7.1.1631.59-69</a> ]</p><p><a href="http://www.scopus.com/inward/citedby.url?scp=84862661631&partnerID=65&md5=3fe2b838c8762cf26cbf0ced141c5200" target="_blank"><img src="http://searchapi.scopus.com/citedby?&citedbycount=http://be-layer7-prod/content/abstract/citation-count?scopus_id=84862661631&http://be-layer7-prod/content/abstract/citation-count?issn=19782993&http://be-layer7-prod/content/abstract/citation-count?scopus_id=84862661631&authToken=sat_20ED5C132F7D65926367ED60A315478271D4774FA44EE27027D807726793359A434BCD254A77C3BA8367C44439CE4B9C15F68150547829BBCA8C27D3AFD2FCC2FD5408BFD1CA716605D07DFA03247380DBBF9BAE9BEF76FD1EF783E2B5391CC130F201CAF93F7F297325A4E330CFA8DE014124E8394E51EDA595D6F4A0BF9FAC98504BBDF04104BA00522B7E07FA7F8EF966134BE1F3898CE45CF97EE037A3FCD134CA9B2FF8E6B9B1731CC919B4B7B5&ipAddress=182.255.2.5&contentAPIKey=9cf02f45d6c541820cab5d2cd870c4f6&authTokenStatusCode=200" border="0" alt="" /></a> | <a href="http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84862661631" target="_blank">View in <img style="vertical-align: middle;" src="http://searchapi.scopus.com/images/scopus_white_new.gif" border="0" alt="" /></a></p