Journal
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
Volume 44, Issue 4, Pages 10755-10765Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15567036.2021.1994669
Keywords
Coke resistance; syngas; bimetallic catalyst; Ru-Ni; MgAl2O4; dry reforming of methane
Funding
- Ministry of Trade, Industry Energy(MOTIE)
- Korea Institute of Energy Technology Evaluation and Planning(KETEP) of the Republic of Korea [20203030030080]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20203030030080] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The study found that loading highly dispersed Ru on Ni/MgAl2O4 catalyst can enhance methane conversion in DRM reaction, with Ru(D)/Ni(I)/MgAl2O4 catalyst showing the best performance in terms of high metal dispersion and CO2 desorption. Additionally, minimal coke deposition was observed during stability tests.
A small loading of highly dispersed Ru on Ni/MgAl2O4 catalyst was investigated in the dry reforming of methane (DRM) process. The catalysts were synthesized by impregnation and deposition-precipitation methods; the DRM reaction was performed at CH4/CO2/N-2 = 1/1/1 and 600-750 degrees C. The bimetallic Ni-Ru catalysts exhibited improved reducibility and metal dispersion compared with that of the Ni catalyst. Among the synthesized catalysts, the Ru(D)/Ni(I)/MgAl2O4 catalyst had the highest metal dispersion (7.23%) and largest amount of CO2 desorption (135 mu mol/g). Thus, this catalyst exhibited the highest CH4 conversion (85.6%) at 750 degrees C. Additionally, coke deposition of only 2.69% occurred during the stability test.
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