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http://dx.doi.org/10.14478/ace.2018.1028

Reaction Characteristics of Combined Steam and Carbon Dioxide Reforming of Methane Reaction Using Pd-Ni-YSZ Catalyst  

Kim, Sung Su (경기대학교 환경에너지공학과)
Publication Information
Applied Chemistry for Engineering / v.29, no.4, 2018 , pp. 382-387 More about this Journal
Abstract
In this study, the reaction characteristics of combined steam and carbon dioxide reforming of methane (CSCRM) reaction using Pd-Ni-YSZ catalyst were investigated according to types of catalysts and gas compositions. Catalysts were prepared in the form of powder and porous disk. The injected gases were supplied at different ratios of $CH_4/CO_2/H_2O$. As a result, the conversion of $CH_4$ and $CO_2$ was improved as a result of using the porous disc type catalyst as compared with that of the powder type catalyst. When the $CH_4/CO_2/H_2O$ ratio of the feed gas was 1 : 0.5 : 0.5, the $H_2/CO$ ratio was adjusted close to 2. However, after 6 hours of the reaction, $CH_4$ conversion was partially reduced by the carbon deposition and the pressure drop increased from 0.1 to 0.8. This issue was then solved by optimizing the water content. As a result, it was confirmed that the durability was secured by preventing the carbon deposition when the gas was supplied at a $CH_4/CO_2/H_2O$ ratio of 1 : 0.5 : 1, and the conversion rate was maintained at a relatively high level.
Keywords
Syn-gas; CSCRM; powder; porous disc;
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