Results 111 to 120 of about 45,423 (287)

Joule self‐heating enabled oxygen transport and coupled methane reactions in a La0.6Sr0.4Co0.2Fe0.8O3‐δ hollow fiber membrane reactor

AIChE Journal, EarlyView.
Abstract Mixed‐conducting ceramic hollow fiber membranes are a versatile platform for oxygen separation, value‐added chemical production, and oxy‐combustion. Because oxygen permeation is thermally activated, these systems typically rely on bulky, energy‐intensive furnaces that suffer from low efficiency and large thermal inertia.
Gang Wang, Hamed Abdolahimansoorkhani, Xingjian Xue   +2 more
wiley   +1 more source

Pt‐Mediated Co‐Adsorption of Hydroxyl and Nitrogen‐Heterocyclic Species Over Cu/CuO Heterostructure Enhances Coupled Azotriazole Electrosynthesis and Dual‐Electrode Hydrogen Production

Angewandte Chemie, EarlyView.
Pt@Cu/CuO heterostructures were designed for electrochemical N─N coupling of 3,5‐diamino‐1H‐1,2,4‐triazole. Mechanism investigation revealed that the Pt sites mediated co‐adsorption of substrates and hydroxyl on Cu/CuO sites. The elaborate Pt@Cu/CuO achieved an ultralow working potential of 0.832 VRHE with a high FE of 95%. A long‐term stability of 600
Jiachen Li, Hanggu Su, Yuqiang Ma, Meng Li, Ruhao Zhang, Cihang Wang, Zihang Zhao, Jun Hu, Xiaogang Mu, Xuanjun Wang, Haixia Ma, Zhengxiao Guo   +11 more
wiley   +2 more sources

A highly efficient Cu/La2O3 catalyst for transfer dehydrogenation of primary aliphatic alcohols

, 2010
La2O3-supported copper nanoparticles are sufficiently active for transfer dehydrogenation of primary aliphatic alcohols to aldehydes. When used for 1-octanol, the yield of 1-octanal can be as high as 63%.
Huang, Xiumin, Wang, Fei, Tana, 申文杰, Li, Yong, Shi, Ruijuan, Shen, Wenjie   +6 more
core   +1 more source

Functionalized TiO2 Catalysts: Revolutionary Candidate for Low‐Temperature MgH2 and Prospects for Intelligent Integration

Advanced Intelligent Discovery, EarlyView.
Recent advances in TiO2 modification strategies: structure regulation and composite engineering for improved activity and functionality. TiO2 has emerged as a pivotal catalyst for enhancing MgH2, a high‐capacity solid‐state hydrogen storage material, owing to its structural versatility.
Xiaopeng Chu, Jinghao Wang, Haojie Shi, Chuanxin Peng, Jiacheng Qi, Ge Gao, Guoquan Na, Haibo Yu, Kela Xiao, Gangqiang Wu, Zhendong Yao   +10 more
wiley   +1 more source

Engineering Ferrimagnetic Interactions in Molecular Quantum Systems

Angewandte Chemie, EarlyView.
Heterospin nanographene architectures—constructed by covalently linking spin‐1/2$\nicefrac {1}{2}$ and spin‐1 triangular units via on‐surface synthesis—are characterized by bond‐resolved scanning probe microscopy. Inelastic electron tunneling spectroscopy probes exchange interactions within a Heisenberg model, revealing both compensated (S=0$S=0$) and ...
Elia Turco, Fupeng Wu, Annika Bernhardt, Nils Krane, Ji Ma, Roman Fasel, Michal Juríček, Xinliang Feng, Pascal Ruffieux   +8 more
wiley   +2 more sources

Photocatalytic non-oxidative dehydrogenation of ethane to ethene with near unit selectivity

Nature Communications
The non-oxidative dehydrogenation of light alkanes to alkenes is thermodynamically limited by the trade-off between the cleavage of C-H and C-C bonds.
Xiaoyu Sui, Jiwu Zhao, Pu Zhang, Ying Wang, Hangbin Zheng, Haihua Zeng, Pengzhao Wang, Yanyan Jia, Na Wen, Zhengxin Ding, Zizhong Zhang, Sheng Dai, Chao Xu, Rusheng Yuan, Wenxin Dai, Xianzhi Fu, Jinlin Long   +16 more
doaj   +1 more source

MgO-supported Cu nanoparticles for efficient transfer dehydrogenation of primary aliphatic alcohols

, 2009
Basic MgO-supported Cu nanoparticles showed exceptionally high activity for transfer dehydrogenation of 1-octanol and the yield of 1-octanal was as high as 58% at 423 K.
Huang, Xiumin, Wang, Fei, 申文杰, Li, Yong, Mu, Xiaoling, Shi, Ruijuan, Shen, Wenjie   +6 more
core   +1 more source

Synergistic Silylium‐Ion and Palladium Catalysis Enables Migratory Alkene Silylation With Allylsilanes by Formal C–H/C–Si Metathesis

Angewandte Chemie, EarlyView.
Merging silylium‐ion and palladium catalysis provides a mechanistically distinct route to allylsilanes by formal C–H/Si–H metathesis. Using allylsilanes as silicon proelectrophiles, various allylarenes undergo migrative silylation, selectively yielding (E)‐allylsilanes.
Longhui Duan, Zheng‐Wang Qu, Stefan Grimme, Elisabeth Irran, Hendrik F. T. Klare, Martin Oestreich   +5 more
wiley   +2 more sources

Catalytic Dehydrogenation of Complex Hydrides for Hydrogen Storage

, 2011
Hydrogen Storage is one of the pending and challenging technical barriers in the implementation of hydrogen energy.1.2 Amide-hydride and ammonia borane are the two systems attracting considerable attention.
陈萍
core  

Flavin Catalysts in Organic Synthesis

Angewandte Chemie, EarlyView.
Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley   +2 more sources