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학술저널
저자정보
Dharmasaroja, Nichthima (Department of Industrial Chemistry, King Mongkut's University of Technology North Bangkok) Phongaksorn, Monrudee (Department of Industrial Chemistry, King Mongkut's University of Technology North Bangkok) Tungkamani, Sabaithip (Department of Industrial Chemistry, King Mongkut's University of Technology North Bangkok) Ratana, Tanakorn (Department of Industrial Chemistry, King Mongkut's University of Technology North Bangkok) Sornchammi, Thana (PTT Public Company Limited)
저널정보
(사)국제문화기술진흥원 The International journal of advanced culture technology The International journal of advanced culture technology 제3권 제2호
발행연도
2015.1
수록면
110 - 117 (8page)

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10 wt% (Ni-Co) catalysts with different Ni and Co content : 10%Ni, 9%Ni1%Co, 7%Ni3%Co, 5%Ni5%Co, 3%Ni7%Co, and 10%Co; were prepared using sol-gel method followed by incipient wetness impregnation method. To investigate the catalytic activity including the stability, dry methane reforming were demonstrated over the pelletized catalysts at $620^{\circ}C$ under atmospheric pressure in a $CH_4:CO_2:N_2$ feedstock for 360 min. The results showed that bimetallic catalysts with the Co content equal to or greater than 3% were more stable than monometallic catalysts (10%Ni and 10%Co). The temperature programmed hydrogenation interpreted that the additional of Co into Ni catalyst improved the carbon resistance from methane cracking. Promoted this type of bimetallic catalyst using 1wt% K (trimetallic catalyst) prevented the carbon formation on the catalyst. The temperature programmed desorption of $CO_2$ indicated that this trimetallic catalyst has a greater number of strong basic sites. Moreover, the appearance of K lowered the number of weak basic sites and decreased the conversion of methane by 12 %.

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