Natural Asphalt Seeps Are Potential Sources for Recalcitrant Oceanic Dissolved Organic Sulfur and Dissolved Black Carbon.
Sign Up to like & getrecommendations! Published in 2022 at "Environmental science & technology"
DOI: 10.1021/acs.est.2c01123
Abstract: Natural oil seepages contribute about one-half of the annual petroleum input to marine systems. Yet, environmental implications and the persistence of water-soluble hydrocarbons from these seeps are vastly unknown. We investigated the release of oil-derived… read more here.
Keywords: natural asphalt; sulfur; dissolved organic; sources recalcitrant ... See more keywords
XPS and structural studies of Fe3O4-PTMS-NAS@Cu as a novel magnetic natural asphalt base network and recoverable nanocatalyst for the synthesis of biaryl compounds
Sign Up to like & getrecommendations! Published in 2021 at "Scientific Reports"
DOI: 10.1038/s41598-021-04111-z
Abstract: In this research, natural asphalt as a mineral carbonuous material was converted to sodium natural asphalt sulfonate (Na-NAS) and, then, was linked to Fe3O4 MNPs in order to synthesize the magnetic nanocatalyst. Afterwards, Cupper (I)… read more here.
Keywords: fe3o4 ptms; microscopy; spectroscopy; natural asphalt ... See more keywords
Exploring the catalytic activity of –NHSO3H functionalized natural asphalt: a sustainable and efficient catalyst for condensation reactions in water
Sign Up to like & getrecommendations! Published in 2025 at "RSC Advances"
DOI: 10.1039/d5ra00870k
Abstract: Herein, we report the synthesis of natural asphalt sulfamic acid (NA-NHSO3H) via functionalization of natural asphalt (NA). The –SO3H groups on the surface of natural asphalt function as acid catalytic sites. This configuration not only… read more here.
Keywords: catalyst; asphalt; catalytic activity; natural asphalt ... See more keywords
Natural asphalt oxide-grafted carboxylic acid: a sustainable heterogeneous catalyst for synthesis of pyrano[2,3-c]pyrazoles and 2-amino-3-cyanopyridines in water
Sign Up to like & getrecommendations! Published in 2025 at "RSC Advances"
DOI: 10.1039/d5ra03786g
Abstract: In this study, we successfully utilized natural asphalt as a natural carbon substrate for the synthesis of a novel heterogeneous Brønsted acid nanocatalyst, Re-NA–CH2CO2H. The –COOH functional groups present on the surface of Reduced Natural… read more here.
Keywords: catalyst; asphalt oxide; natural asphalt; synthesis pyrano ... See more keywords