Catalytic properties of Rh/CeO2/SiO2 for synthesis gas production from biomass by catalytic partial oxidation of tar
Catalytic properties of Rh/CeO2/SiO2 for synthesis gas production from biomass by catalytic partial oxidation of tar
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DOI：
10.1016/j.stam.2005.05.019
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发表时间：
2005-01
影响因子：
5.5
通讯作者：
Tomohisa Miyazawa;T. Kimura;Jin Nishikawa;K. Kunimori;K. Tomishige
中科院分区：
文献类型：
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作者：
Tomohisa Miyazawa;T. Kimura;Jin Nishikawa;K. Kunimori;K. Tomishige
研究了Rh/CeO 2/SiO2催化剂对木质生物质（建筑废弃物）热解焦油的部分氧化性能，并与水蒸气重整Ni催化剂、活性白土、USY沸石、MS-13 X、白云石、氧化铝、硅砂、萤石和非催化剂进行了比较。Rh/CeO 2/SiO2和水蒸气重整Ni催化剂在产氢和焦油量方面表现出比其他材料高得多的性能。因此，对Rh/CeO 2/SiO2和水蒸气重整Ni催化剂的性能进行了详细的比较。从反应温度、当量比和生物质进料速率的依赖性来看，Rh/CeO 2/SiO2比Ni催化剂表现出更高的性能，尤其是在焦油和焦炭量方面。此外，Rh/CeO 2/SiO2催化剂的稳定性也优于Ni催化剂。催化剂失活与积炭量有关。结果表明，Rh/CeO 2/SiO2具有较好的抗积炭性能，这与Rh/CeO 2/SiO2催化剂的燃烧活性高于Ni催化剂有关;高燃烧活性与高还原性和重整活性的组合可与流化床反应器中的高焦油转化性能有关。
Performance of Rh/CeO2/SiO2in the partial oxidation of tar from the pyrolysis of wood biomass (architectural salvage) was investigated and compared with various materials such as steam reforming Ni catalyst, active clay, USY zeolite, MS-13X, dolomite, alumina, silica sand, fluorite and non-catalyst. Rh/CeO2/SiO2and the steam reforming Ni catalyst exhibited much higher performance than any other materials in terms of hydrogen production and the amount of tar. Therefore, the performance of Rh/CeO2/SiO2and steam reforming Ni catalyst was particularly compared. From the result on the dependence of reaction temperature, equivalence ratio, and biomass feeding rate, Rh/CeO2/SiO2exhibited higher performance than the Ni catalyst, especially in terms of tar and coke amount. Furthermore, Rh/CeO2/SiO2was also more stable than the Ni catalyst. The catalyst deactivation can be related to the amount of coke deposition. The results indicate that Rh/CeO2/SiO2has high resistance to coke formation, and this is related to higher combustion activity of Rh/CeO2/SiO2than the Ni catalyst.Furthermore, from the TPR profiles, Rh/CeO2/SiO2had higher reducibility than the Ni catalyst. The combination of high combustion activity with high reducibility and reforming activity can be related to high performance of tar conversion in the fluidized bed reactor.