Catalytic cracking of tars derived from rice hull gasification over goethite and palygorskite
Catalytic cracking of tars derived from rice hull gasification over goethite and palygorskite
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针铁矿和凹凸棒石催化裂解稻壳气化焦油
DOI：
10.1016/j.clay.2012.09.006
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发表时间：
2012-10
影响因子：
5.6
通讯作者：
Ray L. Frost
中科院分区：
文献类型：
--
作者：
Haibo Liu;Tianhu Chen;Dongyin Chang;Dong Chen;Ray L. Frost
采用凹凸棒石（P）、针铁矿（G）和水热合成的针铁矿（HG）作为Fe和Ni的载体。以稻壳船体气化生物质焦油为原料，考察了P、G和HG（负载Fe和Ni）对生物质焦油催化分解的催化活性。通过X射线衍射（XRD）、X射线荧光（XRF）和具有能量色散X射线（EDS）的透射电子显微镜（TEM）对材料进行表征。P对焦油的催化脱除活性明显优于G和HG。而Ni含量为6%（质量分数）的G的焦油转化率为94.6%（质量分数），与Fe 6 Ni 6/P（质量分数）的焦油转化率（质量分数）相当，优于Ni 6/P（质量分数）和Ni 6/HG（质量分数）的焦油转化率（质量分数）当Ni负载量为6%（质量分数）时，焦油转化率最高（94.6%），H2、CO、CH 4的气体产物产率分别为486.9、167.8和22.2mL/（g·tar）。针铁矿负载Ni催化剂在提高焦油转化率和H2、CO、CH 4产率方面表现出较好的催化活性，这是由于针铁矿中Al/Fe取代的存在。
Palygorskite (P), goethite (G), and hydrothermally synthesized goethite (HG) were used as supports for Fe and Ni. The catalytic activity of these materials was investigated involving in P, G and HG (supported Fe and Ni) for catalytic decomposition of biomass tar derived from rice hull gasification. The materials were characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), and transmission electron microscopy (TEM) with an energy dispersive X-ray (EDS). The catalytic activity of P for removal of tar was significantly better than that of G and HG. However, the activity of G with 6 mass% Ni labeled as Ni6/G (tar conversion 94.6%), which was equal to Fe6Ni6/P (94.4%), was better than Ni6/P (64.4%) and Ni6/HG (46.7%). When the loading of Ni (mass%) was 6 mass% on G, tar conversion had the best value (94.6%) and yield of gaseous products reached 486.9, 167.8 and 22.2mL/(g·tar) for H2, CO, CH4, respectively. The catalytic activity of goethite supported Ni was better in improving tar conversion and improving increased yield of H2, CO, CH4, which was attributed to the existence of Al/Fe substitution of goethite.
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影响因子：
22.1
作者：
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通讯作者：
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影响因子：
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作者：
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3.7
作者：
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影响因子：
5.5
作者：
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通讯作者：
Tomohisa Miyazawa;T. Kimura;Jin Nishikawa;K. Kunimori;K. Tomishige