Synthesis and characterization of vanadium nanoparticles on activated carbon and their catalytic activity in thiophene hydrodesulphurization
Synthesis and characterization of vanadium nanoparticles on activated carbon and their catalytic activity in thiophene hydrodesulphurization
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活性炭纳米钒的合成、表征及其噻吩加氢脱硫催化活性
DOI：
10.1016/j.apsusc.2008.02.100
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发表时间：
2008
影响因子：
6.7
通讯作者：
Paulino Betancourt
中科院分区：
文献类型：
--
作者：
S. Pinto;L. D'ornelas;Paulino Betancourt
用K[BEt 3 H]还原VCl 3·3 THF，制备了以活性炭为载体的纳米钒（~ 7 nm）。采用电感耦合等离子体原子发射光谱（ICP-AES）、高分辨透射电子显微镜（HRTEM）和X射线光电子能谱（XPS）对材料进行了表征。以噻吩加氢脱硫（HDS）为模型反应，在300°C、P=1atm下考察了碳载钒催化剂的催化性能。活性炭载体上的碳化钒相的催化活性比参比催化剂氧化铝负载的NiMoS的催化活性更显著。所提出的用于合成这种催化剂的方法导致HDS过程的优异性能。
Vanadium nanoparticles (∼7nm) stabilized on activated carbon were synthesized by the reduction of VCl3·3THF with K[BEt3H]. This material was characterized by inductive coupled plasma-atomic emission spectroscopy (ICP-AES), high-resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS) analyses. The catalytic performance of the carbon-supported vanadium was studied using thiophene hydrodesulfurization (HDS) as model reaction at 300°C and P=1atm. The catalytic activity of the vanadium carbide phase on the activated carbon carrier was more significant than that of the reference catalysts, alumina supported NiMoS. The method proposed for the synthesis of such a catalyst led to an excellent performance of the HDS process.