Enrichment of polymeric WO_X species in WO_x@SnO_2 catalysts for ultra-deep oxidative desulfurization of liquid fuels

Rajendran Antony; Fan Hong-Xia; Cui Tian-You; Feng Jie; Li Wen-Ying

首页> 外文期刊>Fuel >Enrichment of polymeric WO_X species in WO_x@SnO_2 catalysts for ultra-deep oxidative desulfurization of liquid fuels

【24h】

Enrichment of polymeric WO_X species in WO_x@SnO_2 catalysts for ultra-deep oxidative desulfurization of liquid fuels

机译：WO_X @ SnO_2催化剂中聚合物WO_x种类的富集用于液体燃料的超深氧化脱硫催化剂

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Designing an efficient and selective catalyst for the ultra-deep sulfur removal from liquid fuels under mild conditions is vibrant in environmental catalysis. This work reports the preparation of catalysts, i.e., WOx-based active sites generated on SnO2, for the sulfur removal from model diesel via biphasic oxidative desulfurization (ODS). The different active species generated on SnO2 such as monomeric and polymeric WOx species, and crystalline WO3 are characterized. Besides being the support, SnO(2 )adsorbs the sulfur compounds from the oil phase and boosts the ODS performance. No significant change in the ODS activity of WOx@SnO2 is observed in the presence of intrusive nitrogen and aromatic compounds. The order of ODS activity towards different sulfur compounds is dibenzothiophene (DBT) 4,6-dimethyl DBT benzothiophene. While using SnO2 with a higher surface area (96.5 m(2)/g) instead of that with a lower surface area (19.2 m(2)/g), the formation of highly efficient polymeric WOx species is enhanced. Consequently, the turn over frequency is augmented from 10.99 to 43.23 h(-1), which is closely a 4-fold increase. The polymeric WOx species produced on SnO2 having the higher surface area are visualized by HAADF-STEM analysis. Scalable preparation and the higher turnover frequency of the present catalyst can develop a promising catalytic system for the ODS.

机译：在温和条件下，在温和条件下从液体燃料中取出的高效和选择性催化剂在环境催化中具有活力。该工作报告了催化剂的制备，即在SnO 2上产生的基于WOX的活性位点，用于通过双相氧化脱硫（ODS）从模型柴油中除去硫的硫。在SnO 2上产生的不同活性物质如单体和聚合物WOX物种，以及结晶WO3。除了作为支持，SnO（2）还吸附来自油相的硫化合物，并提高ODS性能。在侵入式氮气和芳族化合物存在下，观察到WOX @ SnO2的ODS活性的显着变化。不同硫化合物的ODS活性的顺序是二苯甲酸苯丙胺（DBT）> 4,6-二甲基DBT>苯并噻吩。在使用更高的表面积（96.5M（2）/ g）而不是具有下表面积（19.2μm（2）/g）的情况下使用SnO2（19.2μm（2）/ g），因此增强了高效的聚合物WOX物种的形成。因此，转向频率从10.99增加到43.23小时（-1），这是一个紧亮4倍。通过HAADF-茎分析可视化在具有较高表面积的SNO 2上产生的聚合物WOX物种。可扩展的制剂和本催化剂的较高周转频率可以为ODS发育有希望的催化系统。

著录项

来源
《Fuel》 |2021年第15期|120036.1-120036.14|共14页
作者
Rajendran Antony; Fan Hong-Xia; Cui Tian-You; Feng Jie; Li Wen-Ying;
展开▼
作者单位

Taiyuan Univ Technol Training Base State Key Lab Coal Sci & Technol Shanxi Prov & Minist Sci & Technol Taiyuan 030024 Peoples R China;

Taiyuan Univ Technol Training Base State Key Lab Coal Sci & Technol Shanxi Prov & Minist Sci & Technol Taiyuan 030024 Peoples R China;

Taiyuan Univ Technol Training Base State Key Lab Coal Sci & Technol Shanxi Prov & Minist Sci & Technol Taiyuan 030024 Peoples R China;

Taiyuan Univ Technol Training Base State Key Lab Coal Sci & Technol Shanxi Prov & Minist Sci & Technol Taiyuan 030024 Peoples R China;

Taiyuan Univ Technol Training Base State Key Lab Coal Sci & Technol Shanxi Prov & Minist Sci & Technol Taiyuan 030024 Peoples R China;

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
SOx emission; Clean energy; Tungsten oxide; Desulfurization; Heterogeneous catalysis;

机译：SOX排放;清洁能量;氧化钨;脱硫;异构催化;

Enrichment of polymeric WO_X species in WO_x@SnO_2 catalysts for ultra-deep oxidative desulfurization of liquid fuels

摘要

著录项

相关主题

期刊订阅