期刊
TOPICS IN CATALYSIS
卷 60, 期 12-14, 页码 843-854出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11244-017-0749-5
关键词
Dry reforming; Syngas; Ni-Co/Al2O3-ZrO2; Non-thermal plasma; Voltage
资金
- National Iranian Oil Refining and Distribution Company [87-1037]
- Sahand University of Technology
- Iran Nanotechnology Initiative Council
Glow discharge plasma with different voltages (700, 1000 and 1300 V) has been applied for treatment of Ni-Co/Al2O3-ZrO2 catalyst. Physicochemical properties of the catalysts were investigated by XRD, FESEM, BET and FTIR. Based on characterization results, there was an optimum amount of voltage (1000 V) in which the most uniform morphology, highest surface area and the smallest particle size was observed. On contrary of two other catalysts, 1000 V-treated Ni-Co/Al2O3-ZrO2 catalyst showed amorphous structure for NiO which led to improved dispersion of active phase and strong metal-support interactions. In this catalyst particle size distribution was narrow and average particle size was reported to be 21.2 nm. Dry reforming of methane to syngas using synthesized Ni-Co/Al2O3-ZrO2 nanocatalysts illustrated highest catalyst reactivity in the case of 1000 V-treated Ni-Co/Al2O3-ZrO2 nanocatalyst. This catalyst exhibited 99% feed conversion while 700 and 1300 V-treated catalysts showed 91 and 95% feed conversions at 850 degrees C, respectively. The H-2/CO ratio over 700, 1000 and 1300 V treated catalysts was 0.83, 0.98 and 0.88, respectively.
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