期刊
NATURE ENERGY
卷 2, 期 3, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nenergy.2017.8
关键词
-
资金
- BP under the XC2 program
- Resnick Sustainability Institute at Caltech
- Dow Chemical
- Bristol-Myers Squibb
- NSERC
- US National Science Foundation [CHE-1205646, CHE-1361104, OCI-1053575]
- 'National Thousand Young Talents Program' in China
- 'Jiangsu Specially-Appointed Professor Plan' in China
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1361104] Funding Source: National Science Foundation
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1205646] Funding Source: National Science Foundation
Hydrodesulfurization (HDS) is the process by which sulfur-containing impurities are removed from petroleum streams, typically using a heterogeneous, sulfided transition metal catalyst under high H-2 pressures and temperatures. Although generally effective, a major obstacle that remains is the desulfurization of highly refractory sulfur-containing heterocycles, such as 4,6-dimethyldibenzothiophene (4,6-Me2DBT), which are naturally occurring in fossil fuels. Homogeneous HDS strategies using well-defined molecular catalysts have been designed to target these recalcitrant S-heterocycles; however, the formation of stable transition metal sulfide complexes following C-S bond activation has largely prevented catalytic turnover. Here we show that a robust potassium (K) alkoxide (O)/hydrosilane (Si)-based ('KOSi') system efficiently desulfurizes refractory sulfur heterocycles. Subjecting sulfur-rich diesel (that is, [S] similar to 10,000 ppm) to KOSi conditions results in a fuel with [S] similar to 2 ppm, surpassing ambitious future governmental regulatory goals set for fuel sulfur content in all countries.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据