作　　者： ; ; ; ; ; ;

机构地区： 中国科学院广州能源研究所

出　　处： 《燃料化学学报》 2012年第6期692-697,共6页

摘　　要： 采用浸渍法制备了Ni基整体式催化剂,考察了不同条件(温度、时间、空速、水蒸气添加等)对催化剂上生物质粗燃气重整反应性能的影响。结果表明,催化剂在较低温度下(≤500℃)只具有CO加氢反应活性,随着反应温度的升高粗燃气重整反应逐渐进行,在800℃以上,CH4和C2转化率均高达95%以上,CO2转化率达到92%,但随着反应空速和水蒸气添加量的增加,CH4和CO2等转化率呈现缓慢降低的趋势。此外,通过改变水蒸气添加量可对合成气中H2/CO体积比在0.85～4.00进行较好调节。结合XRD表征发现,Ni基整体式催化剂中Ni°的生成可较好地促进重整反应的进行。 The Ni-based monolithic catalyst was prepared by impregnation method. The performance of the catalyst on biomass fuel gas reforming was investigated by varying the reaction temperature, space velocity, steam addition and time-on-stream. Results show that the Ni-based monolithic catalyst exhibited only CO hydrogenation activity as the reaction temperature is lower than 500 ℃. With the increase in reaction temperature, the reforming activity increased gradually. The CH4 or C2 conversion was above 95%, and CO2 conversion was about 92 % over the catalyst at higher temperature （ ≥ 800 ℃ ）. However, increasing space velocity and the addition of water steam resulted slightly in the decrease of reforming activity. Additionally, with increasing water steam content the H2/CO volume ratio in synthesis gas increased gradually from 0.85 to 4.00. According to the characteristic of X-ray diffraction, it was found that the formation of Ni° could promote well the reforming reaction.

关 键 词： 基整体式催化剂 生物质燃气 重整反应

领　　域： [理学] [理学]