Selective Fischer–Tropsch synthesis for jet fuel production over Y3+ modified Co/H-β catalysts,Sustainable Energy & Fuels

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Selective Fischer–Tropsch synthesis for jet fuel production over Y3+ modified Co/H-β catalysts
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2020-05-04 , DOI: 10.1039/d0se00468e
Meng Yang _{1,

2,

3,

4} , Lingjun Zhu _{1,

2,

3,

4} , Yexin Zhuo _{1,

2,

3,

4} , Jiacheng Liang _{1,

2,

3,

4} , Shurong Wang _{1,

2,

3,

4}

Affiliation

Co/Y-β-x catalysts were prepared by Y³⁺ multiple ion-exchange with H-β zeolites followed by wet-impregnation of cobalt. With Y promotion, the activity of CO hydrogenation and selectivity of jet fuel range hydrocarbons were improved in the selective Fischer–Tropsch reaction. This could be attributed to the reduction of the average crystallite size of Co, the increase of its active surface area, caused by the improvement of the dispersion and reducibility of Co₃O₄, and the adjustment of acid sites in the catalysts. However, an excessive addition of Y³⁺ led to the increase of Brønsted acidity, deriving from the hydrolysis of Y³⁺ adsorbed on the surface of H-β zeolite. Therefore, the Co/Y-β-3 catalyst with an appropriate proportion of Y achieved an optimal JFRH selectivity of 41.2% with a yield of 34.5%.

中文翻译：

在Y3 +修饰的Co /H-β催化剂上进行选择性Fischer-Tropsch合成以生产喷气燃料

Co /Y-β- x催化剂是通过与H-β沸石进行Y ³⁺多次离子交换，然后对钴进行湿浸渍而制备的。随着Y的促进，选择性Fischer-Tropsch反应提高了CO加氢活性和航煤范围烃的选择性。这可能是由于Co ₃ O ₄的分散性和还原性的改善以及催化剂中酸位的调整所致，Co的平均微晶尺寸的减少，活性表面积的增加所致。但是，过量添加Y ^3+会导致Brønsted酸度增加，这是由于Y ³⁺水解引起的吸附在H-β沸石的表面上。因此，具有适当比例的Y的Co /Y-β-3催化剂实现了41.2％的最佳JFRH选择性，产率为34.5％。

更新日期：2020-06-30

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