High catalytic activity of pitch based activated carbon fibres of moderate surface area for oxidation of NO to NO2 at room temperature
High catalytic activity of pitch based activated carbon fibres of moderate surface area for oxidation of NO to NO2 at room temperature
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DOI：
10.1016/s0016-2361(96)00223-2
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发表时间：
1997-05-01
期刊：
影响因子：
7.4
通讯作者：
Yoshikawa, M
中科院分区：
文献类型：
--
作者：
Mochida, I;Kawabuchi, Y;Yoshikawa, M
研究了常温下中等比表面积（约800 m2 g-1）的活性炭纤维对NO（380 ppmv）催化氧化为NO2的反应。对中等表面积的沥青基活性炭纤维进行热处理，NO的转化率显著提高，在干燥空气中为87%，在相对湿度为80%的空气中为62%，在湿空气（100% r.h.）在25摄氏度和纤维质量与气体流速的比率为1.0 × 10（-2）g min mL（-1）。通过在850 ℃下对纤维进行热处理来缓和湿度对所接收的纤维的活性的强烈抑制作用。较低浓度的10 ppmv NO显著降低了氧化反应，在干态和湿态（100% r.h.）空气分别。在高于60% r.h.的潮湿空气中，其他不同表面积的沥青基纤维的催化活性也差得多。(C)1997 Elsevier Science Ltd.
Catalytic oxidation of NO (380 ppmv) to NO2 over activated carbon fibres of moderate surface area (similar to 800 m(2) g(-1)) at room temperature was carried out, to develop oxidative removal of NO from flue gas. The heat treatment of pitch-based activated carbon fibres of moderate surface area markedly increased the conversion of NO to 87% in dry air, 62% in air of 80% relative humidity and 24% in wet air (100% r.h.) at 25 degrees C and a ratio of fibre mass to gas flow rate of 1.0 x 10(-2) g min mL(-1). The strong inhibiting effect of humidity on the activity of the as-received fibres was moderated by heat treatment of the fibres at 850 degrees C. A lower concentration of 10 ppmv NO markedly reduced the oxidation, the conversions being 24 and 5% in dry and wet (100% r.h.) air respectively. The catalytic activities of other pitch-based fibres of different surface area were also much inferior in moist air above 60% r.h. (C) 1997 Elsevier Science Ltd.