Through the use of (Cp(2)TiH)(x) or (Cp(2)Ti)(1-2), in which Cp is C(5)H(5) (cyclopentadienyl ligand), it is possible to effect not only the previously known direct reduction of aldehydes and esters to alkanes but also the one-step conversion to alkane of amides derived from selected primary aromatic amines.
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http://dx.doi.org/10.1073/pnas.78.3.1321 | DOI Listing |
Waste Manag
December 2024
School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China; Tianjin Key Lab of Biomass/waste Utilization, Tianjin Engineering Research Center for Organic Wastes Safe Disposal and Energy Utilization, Tianjin 300072, China. Electronic address:
In this study, ex-situ catalytic pyrolysis of oxygen-containing polycarbonate (PC) was conducted to prepare carbon nanotubes (CNTs) and H-rich syngas. This study examined the influence of the active metal components (Ni and Fe), catalyst pre-reduction, and pre-deoxygenation of pyrolysis volatiles on the catalytic performance and mechanism. Results show that the reductive constituents in pyrolysis volatiles make it difficult to reduce the Fe oxides, thus hindering the CNTs growth on Fe catalysts, compared to Ni catalysts.
View Article and Find Full Text PDFJ Am Chem Soc
December 2024
Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea.
The electrochemical nitrate reduction reaction (NORR) involves multiple hydrogenation and deoxygenation steps, which compete with the hydrogen evolution reaction (HER). Therefore, NORR driven in acidic media is challenging in spite of advantageous fast hydrogen transfers in its elementary steps. The findings presented in this article first demonstrate that the NORR is significantly activated even in acidic lithium nitrate solutions at LiNO concentrations exceeding 6 m on a Pt electrode (the highly effective catalyst for HER) by the formation of a "hydronium-in-salt" electrolyte (HISE), a new type of aqueous high concentration salt electrolyte.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
December 2024
Qingdao University of Science and Technology, State Key Laboratory Base of Eco-Chemical Engineering College of Chemical Engineering, Qingdao, CHINA.
Electrocatalytic reduction of NO3- is a green and sustainable method that not only helps to treat industrial pollutants in wastewater, but also produces valuable chemicals. However, the slow dynamics of the proton-coupled electron transfer process results in a high barrier and low conversion efficiency. In this work, the Se-deficient FeSe2/Fe3O4 heterojunction was synthesized, which showed excellent electrochemical performance in 0.
View Article and Find Full Text PDFSmall
October 2024
School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China.
The reduction of nitrate into valuable ammonia via electrocatalysis offers a green and sustainable synthetic pathway for ammonia. The electrocatalytic nitrate reduction reaction (NORR) encompasses two crucial reaction steps: nitrate deoxygenation and nitrite hydrogenation. Notably, the nitrite hydrogenation reaction is regarded as the rate-determining step of the process.
View Article and Find Full Text PDFPLoS One
October 2024
Scripps Institution of Oceanography, University of California San Diego, San Diego, CA, United States of America.
Coral reefs are facing threats from a variety of global change stressors, including ocean warming, acidification, and deoxygenation. It has been hypothesized that growing corals near primary producers such as macroalgae or seagrass may help to ameliorate acidification and deoxygenation stress, however few studies have explored this effect in situ. Here, we investigated differences in coral growth rates across a natural gradient in seawater temperature, pH, and dissolved oxygen (DO) variability in a nearshore seagrass bed on Dongsha Atoll, Taiwan, South China Sea.
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