Results 101 to 110 of about 186,604 (297)

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

Advanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea, Jordan Santiago Martinez, M. Asunción Molina, Jaime Mazarío, Lucy Costley‐Wood, Christian Cerezo‐Navarrete, Carlo Marini, Eduardo Villalobos‐Portillo, Andrew M. Beale, Pascual Oña‐Burgos   +9 more
wiley   +1 more source

Styrene monomer as potential material for design of new optoelectronic and nonlinear optical polymers: density functional theory study

Royal Society Open Science
Using density functional theory, we have studied the intrinsic properties of styrene. First, we determine the optimized structures, structural parameters and thermodynamic properties to make our simulations more realistic to experimental results and ...
P. Noudem, D. Fouejio, C. D. D. Mveme, S. S. Zekeng   +3 more
doaj   +1 more source

Hoveyda–Grubbs catalysts with an N→Ru coordinate bond in a six-membered ring. Synthesis of stable, industrially scalable, highly efficient ruthenium metathesis catalysts and 2-vinylbenzylamine ligands as their precursors

Beilstein Journal of Organic Chemistry, 2019
A novel and efficient approach to the synthesis of 2-vinylbenzylamines is reported. This involves obtaining 2-vinylbenzylamine ligands from tetrahydroisoquinoline by alkylation and reduction followed by the Hofmann cleavage.
Kirill B. Polyanskii, Kseniia A. Alekseeva, Pavel V. Raspertov, Pavel A. Kumandin, Eugeniya V. Nikitina, Atash V. Gurbanov, Fedor I. Zubkov   +6 more
doaj   +1 more source

Simulação numérica aplicada para avaliar o efeito da pré-polimerização no comportamento de reatores tubulares Numerical simulation to evaluate the effect from pre-polymerization on the behavior of tubular reactors

Polímeros, 2007
O presente estudo utiliza um modelo matemático fenomenológico para simular um sistema de polimerização contínuo em dois estágios. Este sistema é composto por um reator contínuo tipo tanque agitado (CSTR), para pré-polimerização do monômero (primeiro ...
André L. Nogueira, Ricardo A. F. Machado, Marintho B. Quadri, Liliane M. F. Lona   +3 more
doaj   +1 more source

Sulfenamides as flame retardants [PDF]

, 2015
FIELD OF THE INVENTION The present invention is in the field of flame retardants and relates to use of sulfenamides as flame retardants, in particular in polymeric sub ...
Aubert, Melanie, Pawelec, Weronika, Tirri, Teija, Wilen, Carl-Eric   +3 more
core  

Metal-organic frameworks as selective or chiral oxidation catalysts [PDF]

, 2014
Since the discovery of Metal Organic Frameworks (MOFs) in the early 1990s, the amount of new structures has grown exponentially. A MOF typically consists of inorganic nodes that are connected by organic linkers to form crystalline, highly porous ...
Leus, Karen, Liu, Ying-Ya, Van Der Voort, Pascal   +2 more
core   +1 more source

Multifunctional Bio‐Based Packaging for Perishable Foods: Structural Design, Scalable Fabrication, and Versatile Applications

Advanced Materials, EarlyView.
An overview of design principles and scalable fabrication strategies for multifunctional bio‐based packaging. Radiative cooling films, modified‐atmosphere films/membranes, active antimicrobial/antioxidant platforms, intelligent optical/electrochemical labels, and superhydrophobic surfaces are co‐engineered from material chemistry to mesoscale structure
Lei Zhang, Jiaqi Zhang, Mei Cui, Wei Qi, Renliang Huang, Rongxin Su, Kai Zhang   +6 more
wiley   +1 more source

MODIFICATION EFFECT OF AL2O3 NANOFIBRES AND MALEIC ANHYDRIDE STYRENE COPOLYMER ON ULTRAHIGH MOLECULAR WEIGHT POLYETHYLENE: MECHANIC AND TRIBOLOGICAL PROPERTIES

Advanced Engineering Research, 2012
The test results on the mechanical and tribological properties of the composite materials based on ultrahigh molecular weight polyethylene, chemically styrenated by maleic anhydride, depending on the component s and filler content, such as aluminium ...
Victor V. Ilyasov, Van Chuong Nguyen
doaj  

Carbolithiation of N-alkenyl ureas and N-alkenyl carbamates

Beilstein Journal of Organic Chemistry, 2013
N-Alkenyl ureas and N-alkenyl carbamates, like other N-acyl enamines, are typically nucleophilic at their β-carbon. However, by incorporating an α-aryl substituent, we show that they will also undergo attack at the β-carbon by organolithium nucleophiles,
Julien Lefranc, Alberto Minassi, Jonathan Clayden   +2 more
doaj   +1 more source

Recent Advances in Electrospun Nanofibers for Triboelectric Nanogenerators: Performance Enhancement Strategies and Emerging Applications

Advanced Materials, EarlyView.
This review highlights recent advances in electrospun nanofiber‐based triboelectric nanogenerators, emphasizing how material design, fiber architecture, and interface engineering collectively enhance output performance and mechanical durability. Key developments in porous, aligned, core‐shell, and hierarchical nanofibers are discussed alongside ...
MD Fajla Rabbi, Jee Hwan Ahn, Duy Linh Vu, Kyoung Kwan Ahn   +3 more
wiley   +1 more source