Catalytic Cracking of Tar from Biomass Gasification over a HZSM-5-Supported Ni-MgO Catalyst
Catalytic Cracking of Tar from Biomass Gasification over a HZSM-5-Supported Ni-MgO Catalyst
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DOI：
10.1021/acs.energyfuels.5b00830
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发表时间：
2015-12-01
期刊：
影响因子：
5.3
通讯作者：
Ji, Na
中科院分区：
文献类型：
--
作者：
Chen, Guan-Yi;Liu, Cong;Ji, Na
研究了经500 ℃焙烧还原后的HZSM-5（Si/Al = 25）负载Ni或Ni + MgO催化剂对生物质气化焦油的催化裂解性能。采用X射线衍射（XRD）、透射电子显微镜（TEM）和程序升温脱附（TPD）对催化剂进行了表征。采用气相色谱-质谱联用（GC-MS）和气相色谱（GC）对液相和气相产物进行分析。结果表明，Ni-MgO/HZSM-5的催化活性优于Ni/HZSM-5。当Ni和MgO的负载量分别为6wt%和2wt%时，焦油转化率达到91.03wt%，气体释放热值达到7.64MJ/Nm（3）。Ni-MgO/HZSM-5具有较强的抗积炭能力（11.69wt%）。
The catalytic cracking of tar derived from biomass gasification was investigated, focusing on the catalyst performance of HZSM-5 (Si/Al = 25) loading with Ni or Ni and MgO, which was pre-calcined and reduced at 500 degrees C. The catalysts were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), and temperature-programmed desorption (TPD). The liquid and gaseous products were analyzed by gas chromatography-mass spectrometry (GC-MS) and gas chromatography (GC). The results showed that the catalytic activity of Ni-MgO/HZSM-5 was better than that of Ni/HZSM-5. When the loadings of Ni and MgO (mass %) were 6 and 2 wt %, respectively, tar conversion attained 91.03 wt % and the heating value of gas released reached 7.64 MJ/Nm(3). Ni-MgO/HZSM-5 showed a stronger resistance to carbon deposition (11.69 wt %).