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RISS 인기검색어
- 검색키워드
- 저자 : Zhenlan Li (검색결과 4 건)
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Li, ZhenLan,Devianto, Hary,Kwon, Heock-Hoi,Yoon, Sung Pil,Lim, Tae-Hoon,Lee, Ho-In Elsevier 2010 Journal of industrial and engineering chemistry Vol.16 No.3
<P><B>Abstract</B></P><P>Active and tolerant Ni-based catalyst for methane steam reforming in direct internal reforming molten carbonate fuel cell (DIR-MCFC) was developed. Deactivation of reforming catalysts by alkali metals from electrolyte composed of Li<SUB>2</SUB>CO<SUB>3</SUB> and K<SUB>2</SUB>CO<SUB>3</SUB> is one of the major obstacles to be overcome in commercialization of DIR-MCFC. Newly developed Ni/MgSiO<SUB>3</SUB> reforming catalyst showed activities of ca. 82% methane conversion for 240min in out-of-cell test. In duration test, the unit cell containing Ni foam impregnated with Ni/MgSiO<SUB>3</SUB> in anode gas channel did not give performance degradation for more than 2000h, while the unit cell assembled with Ni/MgSiO<SUB>3</SUB>-coated anode showed a significant performance loss after an operation of 1200h. Results obtained from X-ray diffraction and Brunauer–Emmett–Teller technique revealed that Ni sintering and support deterioration were decisive factors in decreasing the catalytic activity.</P>
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ZhenLan Li,Hary Devianto,권혁회,윤성필,임태훈,이호인 한국공업화학회 2010 Journal of Industrial and Engineering Chemistry Vol.16 No.3
Active and tolerant Ni-based catalyst for methane steam reforming in direct internal reforming molten carbonate fuel cell (DIR-MCFC) was developed. Deactivation of reforming catalysts by alkalimetals from electrolyte composed of Li2CO3 and K2CO3 is one of the major obstacles to be overcome in commercialization of DIR-MCFC. Newly developed Ni/MgSiO3 reforming catalyst showed activities of ca. 82% methane conversion for 240 min in out-of-cell test. In duration test, the unit cell containing Ni foam impregnated with Ni/MgSiO3 in anode gas channel did not give performance degradation formore than 2000 h, while the unit cell assembled with Ni/MgSiO3-coated anode showed a significant performance loss after an operation of 1200 h. Results obtained from X-ray diffraction and Brunauer–Emmett–Teller technique revealed that Ni sintering and support deterioration were decisive factors in decreasing the catalytic activity. 2010 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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The effect of electrolyte wettability on reforming catalyst in direct ethanol MCFC
Hary Devianto,Zhenlan Li,윤성필,한종희,남석우,임태훈,이호인 한국물리학회 2010 Current Applied Physics Vol.10 No.2
To overcome the poisoning of reforming catalyst contacted with the electrolyte without degradations of performance and long-term stability, we proposed on the development of support which has low wettability to electrolyte, but still keeps high activity on steam reforming of bio-ethanol. To perform the wettability measurement, a couple of supports (MgO and PbO) were pressed to form disc-shaped specimen with relatively low porosity, and subjected to an on-line optical contact angle measurement device at MCFC operating condition. The results of wettability of the supports indicated that PbO showed low wettability to the carbonates melts giving high contact angle. The microstructure of unreacted PbO layer might be contributed to its low wettability. The highest activity was achieved with Ni/MgO, while the lowest wettability was attained with PbO as a support. Ni/1MgO·1PbO seemed to be the most promising candidate for avoiding the reforming catalyst from poisoning.
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Danfeng Tang,Peng Chen,Gang Jin,Min Li,Cancan Wang,Zhenlan Bin,Jinghua Qian,Zizheng Wang,Ruiyang Zhou 한국식물학회 2017 Journal of Plant Biology Vol.60 No.2
A cytoplasmic male sterile line (designated as M2BS) was obtained from an indica rice maintainer M2B induced by partial-length HcPDIL5-2a (Hibiscus cannabinus protein disulfide isomerase-like) transformation. The anther of M2BS was short, slender, hygrophanous, and fissured. I2-KI staining method showed that there was typical and spherical abortion in pollen grains. M2BS was found abortive at middle and late stage of monocyte by the modified carbol fuchsin stained observation and paraffin section observation. The tapetum was observed pre-degenerated in M2BS. Hereditary analysis indicated that the male sterility of M2BS was a maternally inherited inability after six backcross generations with M2B and the combinations of M2BS hybridized with other two male fertile materials. The M2BS could be affirmed a cytoplasmic male sterile (CMS) type. Moreover, it was a transgenic plant confirmed by PCR, Southern blot and RT-PCR detection. M2BS could be distinguished from M2B and its CMS line M2A by RFLP analysis. The overall mitochondrial genome sequencing results showed, that in M2BS, the main differences of mitochondrial gene sequence were located in nad4, nad5, nad7, orf194 and intergenic region, relatively to those of M2A. The obtained results indicate that M2BS is a novel cytoplasmic male sterile line.
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