Surfactant-Confined Synthesis of CoMoS Catalysts Using Polyoxometalate Precursors for Superior Fuel Hydrodesulfurization,Energy & Fuels

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Surfactant-Confined Synthesis of CoMoS Catalysts Using Polyoxometalate Precursors for Superior Fuel Hydrodesulfurization
Energy & Fuels ( IF 5.2 ) Pub Date : 2021-01-25 , DOI: 10.1021/acs.energyfuels.0c03364
Tingting Huang _{1,

2} , Qingyi Peng ₁ , Hengjun Gai ₂ , Yu Fan ₁

Affiliation

This article proposes a novel surfactant-confined preparation method that uses polyoxometalates (POMs) as the precursor to synthesize CoMo/Al₂O₃ catalysts. The proposed technique anchors a decyltrimethylammonium bromide (DTAB)-confined POM precursor on the Al₂O₃ support under a subcritical condition, which weakens the interaction between the metals and support and promotes the generation of reduced-size MoS₂ phases with a high dispersion degree and improved stacking. The as-prepared CoMo/Al₂O₃ catalysts have a higher concentration of accessible CoMoS active sites than their counterparts synthesized by impregnation and hydrothermal methods, endowing them with superior catalytic activity for the hydrodesulfurization (HDS) of dibenzothiophene (DBT) and fluid catalytic cracking (FCC) diesel.

中文翻译：

表面活性剂限制的多金属氧酸盐前体合成CoMoS催化剂可实现优异的燃料加氢脱硫

本文提出了一种新的表面活性剂受限的制备方法，该方法使用多金属氧酸盐（POM）作为前体来合成CoMo / Al ₂ O ₃催化剂。拟议中的技术在亚临界条件下将由癸基三甲基溴化铵（DTAB）固定的POM前体锚固在Al ₂ O ₃载体上，这削弱了金属与载体之间的相互作用，并促进了高分散度的MoS ₂减小相的生成。度和改进的堆叠。制备的CoMo / Al ₂ O ₃ 催化剂具有比通过浸渍和水热法合成的可访问的CoMoS活性中心更高的浓度，赋予它们对二苯并噻吩（DBT）和流体催化裂化（FCC）柴油的加氢脱硫（HDS）优异的催化活性。

更新日期：2021-02-04

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