Journal
APPLIED SCIENCES-BASEL
Volume 11, Issue 21, Pages -Publisher
MDPI
DOI: 10.3390/app112110333
Keywords
methane; decomposition; hydrogen; reactor; cavity; solar thermal energy; chemical reaction
Categories
Funding
- Ministry of Environment of the Republic of Korea [2017002410010]
- Korea Institute of Energy Research [C1-2409]
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This study investigated the decomposition of methane using solar thermal energy, achieving high conversion rates at lower temperatures through the use of specific catalysts and reactor designs.
This study investigates the decomposition of methane using solar thermal energy as a heat source. Instead of the direct thermal decomposition of the methane at a temperature of 1200 & DEG;C or higher, a catalyst coated with carbon black on a metal foam was used to lower the temperature and activation energy required for the reaction, and to increase the yield. To supply solar heat during the reaction, a reactor suitable for a solar concentrating system was developed. In this process, a direct heating type reactor with quartz was initially applied, and a number of problems were identified. An indirect heating type reactor with an insulated cavity and a rotating part was subsequently developed, followed by a thermal barrier coating application. Methane decomposition experiments were conducted in a 40 kW solar furnace at the Korea Institute of Energy Research. Conversion rates of 96.7% and 82.6% were achieved when the methane flow rate was 20 L/min and 40 L/min, respectively.
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