2023

最新文章

• Tandem propane dehydrogenation and surface oxidation catalysts for selective propylene synthesis AI翻译
  作者：Wang, Wei; Chen, Sai; Pei, Chunlei; Luo, Ran; Sun, Jiachen; Song, Hongbo; Sun, Guodong; Wang, Xianhui; Zhao, Zhi-Jian; Gong, Jinlong
  作者单位：Tianjin University; TJU-NUS Joint Institute; Collaborative Innovation Center of Chemical Science & Engineering Tianjin
  摘要：Direct propane dehydrogenation (PDH) to propylene is a desirable commercial reaction but is highly endothermic and severely limited by thermodynamic equilibrium. Routes that oxidatively remove hydrogen as water have safety and cost challenges. We coupled chemical looping-selective hydrogen (H-2) combustion and PDH with multifunctional ferric vanadate-vanadium oxide (FeVO4-VOx) redox catalysts. Well-dispersed VOx supported on aluminum oxide (Al2O3) provides dehydrogenation sites, and adjacent n...
• CLIMATE CHANGE As oceans warm, scientists forecast heat waves AI翻译
  作者：Cornwall, Warren
• The Remnants of Race Science AI翻译
  作者：Determann, Joerg Matthias
  作者单位：Qatar Foundation (QF); Virginia Commonwealth University School of the Arts in Qatar
• How bulked-up cells shape hearts and leaves AI翻译
  作者：Pennisi, Elizabeth
• Aminodealkenylation: Ozonolysis and copper catalysis convert C(sp3)-C(sp2) bonds to C(sp3)-N bonds AI翻译
  作者：He, Zhiqi; Moreno, Jose Antonio; Swain, Manisha; Wu, Jason; Kwon, Ohyun
  作者单位：University of California System; University of California Los Angeles
  摘要：Great efforts have been directed toward alkene p bond amination. In contrast, analogous functionalization of the adjacent C(sp(3))-C(sp(2)) s bonds is much rarer. Here we report how ozonolysis and copper catalysis under mild reaction conditions enable alkene C(sp(3))-C(sp(2)) s bond-rupturing cross-coupling reactions for the construction of new C(sp(3))-N bonds. We have used this unconventional transformation for late-stage modification of hormones, pharmaceutical reagents, peptides, and nucle...
• Norway's mining plans threaten Arctic life AI翻译
  作者：Sonne, Christian; Ciesielski, Tomasz M.; Jenssen, Bjorn M.; Lam, Su Shiung; Zhong, Huan; Dietz, Rune
  作者单位：Aarhus University; University of Petroleum & Energy Studies (UPES); Norwegian University of Science & Technology (NTNU); University Centre Svalbard (UNIS); Universiti Malaysia Terengganu; Nanjing University
• Forest carbon offsets are failing AI翻译
  作者：Jones, Julia P. G.; Lewis, Simon L.
  作者单位：Bangor University; Utrecht University; University of Leeds; University of London; University College London
• The Dawn of a Mindful Universe: A Manifesto for Humanity's Future AI翻译
  作者：Stanley, Matthew
  作者单位：New York University
  摘要：Learning to appreciate the rarity of life could improve our climate future, argues a physicist Learning to appreciate the rarity of life could improve our climate future, argues a physicist
• Hawaii, from ashes to sustainability AI翻译
  作者：Fox, Keolu
  作者单位：University of California System; University of California San Diego
  摘要：Driven by fierce winds and dry, hot conditions, the fire that consumed Maui's Lahaina-the deadliest US fire in more than a century-is a sad, stark reminder of the environmental pressures on the Hawaiian islands caused by overdevelopment and industrial tourism. As Maui emerges from the ashes, there is an opportunity to reimagine the governance of habitats through sustainable and equitable processes that preserve Hawai'i's natural beauty, with a less destructive, green economy that centers on ec...
• Thin jets underlie the solar wind AI翻译
  作者：Ugarte-Urra, Ignacio; Wang, Yi-Ming
  作者单位：United States Department of Defense; United States Navy; United States Naval Research Laboratory
  摘要：Solar Orbiter images reveal widespread magnetic plasma jets at the roots of the solar wind