Results 121 to 130 of about 7,082 (274)

Post‐Shaping Over‐Impregnation: A Facile Strategy for Pt‐KL Catalysts With Ultrahigh Metal Dispersion and Enhanced Aromatization Performance

Carbon and Hydrogen, EarlyView.
A scalable post‐shaping strategy achieves precise Pt localization within KL zeolite, where optimized spatial distribution minimizes diffusion barriers to deliver superior n‐hexane aromatization activity, selectivity, and stability. ABSTRACT The precise localization of metal clusters within zeolite frameworks is critical for the aromatization catalysis.
Jianjian Yang, Qijia Chen, Ziyi Qiu, Qiang Liu, Yongping Liu, Wenlin Li   +5 more
wiley   +1 more source

A universal approach for the synthesis of two-dimensional binary compounds

Nature Communications, 2019
The scalable synthesis of 2D materials critically relies on finding appropriate vapour-phase metal precursors and careful fine-tuning of growth parameters.
Abhay Shivayogimath, Joachim Dahl Thomsen, David M. A. Mackenzie, Mathias Geisler, Raluca-Maria Stan, Ann Julie Holt, Marco Bianchi, Andrea Crovetto, Patrick R. Whelan, Alexandra Carvalho, Antonio H. Castro Neto, Philip Hofmann, Nicolas Stenger, Peter Bøggild, Timothy J. Booth   +14 more
doaj   +1 more source

Lead telluride non-magnetic bonding research study Third quarterly report, Sep. 1 - Nov. 30, 1965 [PDF]

Diffusion bonding of tungsten electrodes to lead tellurium and lead tellurium-tin tellurium ...
Bates, H. E., Weinstein, M.
core   +1 more source

Tuning the Geometric and Electronic Structures in PtMn/SiO2 Catalysts via Oxygen Plasma Treatment for Enhanced Propane Dehydrogenation

Carbon and Hydrogen, EarlyView.
Oxygen plasma treatment promotes Pt dispersion, reducing the average Pt particle size of PtMn catalyst from 2.7 to 1.2 nm, and increases the electron cloud density of Pt. The optimized catalyst exhibits excellent mass‐normalized activity (171 molC3H8·gPt−1·h−1) and an ultralow deactivation rate constant, outperforming most reported Pt‐based catalysts ...
Wulin Yan, Ming Li, Hao Wang, Limin Zhang, Yaowen Gu, Guanghui Zhang, Xinwen Guo   +6 more
wiley   +1 more source

Infrared spectra of some sulfides and their analogs of binary composition in the long-wave region [PDF]

The far infrared spectra (500-60/cm) of some simple sulfides and their analogs were studied. In all, 22 minerals with different structure types were investigated, out of which 14 are sulfides (galena, alabandite, pyrrhotite, sphalerite, wurtzite ...
Povarennykh, A. S., Sidorenko, G. A., Solntsev, B. P., Solntseva, L. S.   +3 more
core   +1 more source

Ladder‐Like Structural Architecture of Layered Magnetic A2.4 Cr8Te14 (A = Rb, Cs) Compounds by Self‐Flux Synthesis

Chemistry – A European Journal, EarlyView.
A2.4Cr8Te14$A_{2.4}{\rm Cr}_{8}{\rm Te}_{14}$ (A = Rb, Cs) compounds exhibit a layered, ladder‐like Cr‐Te framework uniting structural motives of hollandite‐like and delafossite‐like phases. Alkali atoms are situated both in the interlayer space and tunnels within the Cr8Te14${\rm Cr}_{8}{\rm Te}_{14}$ framework.
Kai D. Röseler, Felix Eder, Fabian O. von Rohr   +2 more
wiley   +1 more source

Large Nernst effect in Te-based van der Waals materials

Physical Review Research
Layered van der Waals tellurides reveal topologically nontrivial properties that give rise to unconventional magneto-transport phenomena. Additionally, their semimetallic character with high mobility makes them promising candidates for large magneto ...
M. Behnami, M. Gillig, A. G. Moghaddam, D. V. Efremov, G. Shipunov, B. R. Piening, I. V. Morozov, S. Aswartham, J. Dufouleur, K. Ochkan, J. Zemen, V. Kocsis, C. Hess, M. Putti, B. Büchner, F. Caglieris, H. Reichlova   +16 more
doaj   +1 more source

Low‐Temperature Initiation Enhances HCN and NH3 Formation From Methane and NO Over Pt/Al2O3

Chemistry – A European Journal, EarlyView.
Hydrogen cyanide (HCN) was formed from CH4 and NO over Pt/Al2O3 at low temperatures. Increasing NO concentration and optimizing reaction‐start conditions significantly enhanced HCN yield. In situ FTIR and DXAFS measurements revealed that dynamically balancing Pt‑CO and Pt‑CN surface species, particularly their desorption under temperature‑swing ...
Emika Yamashita, Kyoko K. Bando, Toshitaka Kubo, Atsushi Takagaki   +3 more
wiley   +1 more source

Detection of Particulate Matter With Lock‐In Thermography

CleanMat, EarlyView.
Accurate quantification of black carbon is essential due to its significant impact on climate, air quality, and human health. Lock‐in thermography (LIT), as implemented by NanoLockin's instrument Calorsito, offers a sensitive, scalable, and reproducible approach for detecting black carbon on filter substrates.
Alina Oetsen, Christoph Geers, Andreas Traube, Gunter Festel, Daniel Fehr, Mathias Bonmarin   +5 more
wiley   +1 more source

Stabilization of Pd Active Sites by Defective NaY Zeolite Framework for Enhanced Stability in Dimethyl Carbonate Synthesis

EcoEnergy, EarlyView.
A tailored‐defect strategy employing sequential high‐temperature calcination and acetylacetone treatment was developed to generate framework defects in NaY zeolite while preventing the formation of strong acid sites. These defects facilitate electron transfer from Pd to the zeolite framework and stabilize the Pd2+ active sites, thereby conferring ...
Chunzheng Wang, Rongyan Mei, Shicheng Yuan, Yida Zhou, Yipu Xu, Xianglong Meng, Longgang Tao, Shutao Xu, Hailing Guo, Svetlana Mintova   +9 more
wiley   +1 more source