Recovery of Useful Hydrocarbons from Petroleum Residual Oil by Catalytic Cracking with Steam over Zirconia-Supporting Iron Oxide Catalyst
Recovery of Useful Hydrocarbons from Petroleum Residual Oil by Catalytic Cracking with Steam over Zirconia-Supporting Iron Oxide Catalyst
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DOI：
10.1021/ef0499067
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发表时间：
2004-09
期刊：
影响因子：
5.3
通讯作者：
E. Fumoto;T. Tago;A. Tsuji;T. Masuda
中科院分区：
文献类型：
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作者：
E. Fumoto;T. Tago;A. Tsuji;T. Masuda
为减少重油制轻油过程中氢气的消耗，对常压蒸馏渣油用蒸汽催化裂化进行了研究。采用了两种氧化铁基催化剂：赤铁矿（α-Fe2O3）和针铁矿（FeOOH，本文记为FeOX催化剂）。人们发现，重油在氧化铁催化剂上转化为有用的轻烃（即汽油、煤油和汽油）的混合物。此外，由于FeOX催化剂具有直径为6 ~ 10 nm的介孔，因此它比α-Fe2O3催化剂具有更高的活性，并且不会产生碳质残渣。在FeOX催化剂上负载ZrO2可以提高催化活性。从x射线衍射分析和穆斯堡尔测量可以认为，H2O在ZrO2颗粒上产生的活性氧溢出到FeOX表面，发生了重油的氧化分解。
To reduce the consumption of hydrogen when converting heavy oil to light oil, the catalytic cracking of a heavy oil (residue of atmospheric distillation) with steam was examined. Two iron oxide-based catalystshematite (α-Fe2O3) and goethite (FeOOH, denoted herein as FeOX catalyst)were used. It was found that the heavy oil was converted to a mixture of useful light hydrocarbons (i.e., gasoline, kerosene, and gas-oil) over iron oxide-based catalysts. Moreover, because the FeOX catalyst possessed mesopores with diameters of 6−10 nm, it exhibited higher activity than the α-Fe2O3 catalyst without the production of carbonaceous residue. The catalytic activity could be enhanced by loading ZrO2 on the FeOX catalyst. From the X-ray diffraction analysis and Mossbauer measurement, it was considered that the active oxygen species generated from H2O over ZrO2 particles spilled over the FeOX surface, where the oxidized decomposition of heavy oil occurred.