当前位置: X-MOL 学术Fuel › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Construction of 2D-2D V2O5/BNNS nanocomposites for improved aerobic oxidative desulfurization performance
Fuel ( IF 7.4 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.fuel.2020.117498
Chao Wang , Yue Qiu , Haoyu Wu , Wenshu Yang , Qian Zhu , Zhigang Chen , Suhang Xun , Wenshuai Zhu , Huaming Li

Abstract In this study, 2D-2D nanocomposites were constructed based on V2O5 and exfoliated ultra-thin BN nanosheets (BNNS) via a facile solvothermal route. Detailed characterization results indicate the successful introduction of 2D V2O5 to the exfoliated BNNS carrier. The catalytic aerobic oxidation performance of the 2D-2D V2O5/BNNS nanocomposites was measured by catalytic oxidative desulfurization of oils with using molecular oxygen (O2) in the air as oxidant, providing an efficient desulfurization strategy to produce ultra-low S-content oils. Here, 99.6% removal of dibenzothiophene (DBT, ≤2 ppm) could be achieved under atmospheric pressure. Moreover, deep desulfurization of oils with different substrates and distractors could also be achieved. And the reaction system could be recycled for at least 7 times without any appreciable decrease of catalytic performance. The existence of BNNS could help to adsorb sulfides in oil phase, forming local high concentration of substrates on the surface of the catalyst, which could accelerate the reaction rate effectively. In addition, this study would also share new sights for the rational design and synthesis of binary nanocomposites for aerobic oxidation reactions.

中文翻译:

2D-2D V2O5/BNNS纳米复合材料的构建提高好氧氧化脱硫性能

摘要 在本研究中,基于 V2O5 和剥离的超薄 BN 纳米片 (BNNS) 通过简便的溶剂热途径构建了 2D-2D 纳米复合材料。详细的表征结果表明 2D V2O5 成功地引入到剥离的 BNNS 载体中。2D-2D V2O5/BNNS纳米复合材料的催化好氧氧化性能通过使用空气中的分子氧(O2)作为氧化剂对油进行催化氧化脱硫来测量,为生产超低S含量油提供了一种有效的脱硫策略。在这里,可以在大气压下实现 99.6% 的二苯并噻吩(DBT,≤2 ppm)去除率。此外,还可以实现具有不同底物和干扰物的油的深度脱硫。并且该反应体系至少可以循环使用 7 次,催化性能没有任何明显的下降。BNNS的存在有助于吸附油相中的硫化物,在催化剂表面形成局部高浓度的底物,可有效加快反应速率。此外,这项研究还将为合理设计和合成用于有氧氧化反应的二元纳米复合材料提供新的视角。
更新日期:2020-06-01
down
wechat
bug