Upgrading of light cycle oil via coupled hydrogenation and ring-opening over NiW/Al2O3-USY catalysts
Upgrading of light cycle oil via coupled hydrogenation and ring-opening over NiW/Al2O3-USY catalysts
复制标题
NiW/Al2O3-USY 催化剂耦合加氢开环升级轻循环油
DOI：
10.1016/j.cattod.2010.04.018
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发表时间：
2010-12
期刊：
影响因子：
5.3
通讯作者：
中科院分区：
文献类型：
--
作者：
通过水热和酸处理，制备了一系列不同酸度和孔径的超稳定Y （USY）沸石样品。在USY沸石和Al2O3的混合载体上维持NiW硫化物催化剂。以四氢化萘为模型化合物，在连续固定床反应器上研究了催化偶联加氢和开环性能。在所研究的反应条件下[T=613K， P=4.0MPa， LHSV=2.0h−1，H2/油(v/v)=500]，所有催化剂均表现出较高的四氢萘转化率。产物收率和选择性主要取决于沸石的性质（即酸度）。沸石的酸度是影响四氢化萘开环选择性的关键因素。对于中等酸度的USY沸石，在c10产率为98.2%的条件下，最高十六烷开环产率为39.1wt%。使用流体催化裂化轻循环油原料，催化剂的活性高于商用催化剂，在柴油收率为97.6wt%的情况下，十六烷数增加了14个单位。由于开环反应的第一步是加氢反应，因此催化剂必须具有较高的加氢活性。使用本文提供的支撑，ws2slab在催化剂上的平均层数高达2.7。
A series of ultrastable Y (USY) zeolite samples with different acidities and pore sizes are prepared via hydrothermal and acid treatments. NiW sulfide catalysts are maintained on a mixed support of USY zeolite and Al2O3. The catalytic coupled hydrogenation and ring-opening performance are studied on a continuous fixed-bed reactor using tetralin as the model compound. All catalysts show high tetralin conversions under the reaction conditions studied [T=613K, P=4.0MPa, LHSV=2.0h−1, H2/oil (v/v)=500]. Product yields and selectivity are mainly determined by the zeolite property (i.e., acidity). A medium to strong zeolite acidity is the key factor in the ring-opening selectivity of tetralin. A maximum high cetane ring-opening product yield of 39.1wt% is obtained at a C10yield of 98.2wt% for a USY zeolite with medium acidity. Using an fluid catalytic cracking light cycle oil feedstock, the activity of the catalyst is higher than that of commercial catalysts, giving a 14-unit cetane number increase at a diesel yield of 97.6wt%. Because the first step of the ring-opening reaction is hydrogenation, the catalyst must have high hydrogenation activity. The WS2slabs have a high average layer number of 2.7 on the catalyst using the support presented here.
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影响因子：
22.1
作者：
Song, C;Ma, XL
通讯作者：
Ma, XL
影响因子：
5.3
作者：
H. Yasuda;T. Sato;Y. Yoshimura
通讯作者：
H. Yasuda;T. Sato;Y. Yoshimura
影响因子：
7.3
作者：
M. Santikunaporn;J. Herrera;S. Jongpatiwut;D. Resasco;W. Alvarez;E. L. Sughrue
通讯作者：
M. Santikunaporn;J. Herrera;S. Jongpatiwut;D. Resasco;W. Alvarez;E. L. Sughrue
影响因子：
5.5
作者：
M. Arribas;P. Concepción;Agustín Martínez
通讯作者：
M. Arribas;P. Concepción;Agustín Martínez
影响因子：
7.4
作者：
L. Vradman;M. Landau;M. Herskowitz
通讯作者：
L. Vradman;M. Landau;M. Herskowitz