Results 51 to 60 of about 360,310 (205)

Surface model for gas-phase polymerizations of ethylene and propylene using supported metallocene/methylalumoxane catalysts

, 2002
In order to obtain more detailed information about supported metallocene/methylaluminoxane catalysts, 2 catalysts are supported onto a flat silicon wafer by spin-coating impregnation.
Piet J. Lemstra, Lemstra, P.J., Kaminsky, W, Weingarten, U, J.W. (Hans) Niemantsverdriet, Weingarten, U., Peter C. Thüne, Walter Kaminsky, Thüne, P.C., Fabian Müller, Müller, F., Muller, F, Niemantsverdriet, J.W., Loos, J, Niemantsverdriet, JW, Kaminsky, W., Joachim Loos, Lemstra, PJ, Ulrich Weingarten, Thune, PC, Loos, J.   +20 more
core   +1 more source

Turning Bonding Into Function: The Emerging Role of the Bioactive Selenium─Metal Motif in Toxicology and Medicinal Chemistry

Chemistry – A European Journal, EarlyView.
Balancing Act: Se─M bond serving as the fulcrum of the balance scale to compare the different weight of toxicity and therapeutic effects in biological environment. ABSTRACT The synthesis and characterization of organo‐selenium compounds have attracted considerable interest for decades, driven by the search for efficient catalysts and bioinspired ...
Matteo Filippi, Alessandro Rubbi, Pablo A. Nogara, Giovanni Ribaudo, Vito Lippolis, João B. T. Rocha, Laura Orian   +6 more
wiley   +1 more source

Comparison of Support Effects on Phillips and Metallocene Catalysts

, 2021
Both metallocene and Phillips chromium catalysts are used in the commercial manufacture of polyethylene. Unlike most other commercial metallocene systems, the Chevron Phillips Chemical (CPC) platform does not use methylaluminoxane or fluoroorganic ...
Qing Yang, Max Paul McDaniel
core   +1 more source

Catalisadores metalocênicos: aspectos gerais e heterogeneização Metallocene catalysts: general aspects and heterogenization

Polímeros, 1998
Este trabalho apresenta uma discussão sobre aspectos gerais da nova tecnologia de síntese de polímeros com microestrutura e propriedades controladas, obtidos via sistema catalítico metaloceno/MAO.
Maria de Fátima V. Marques, Patricia Aragão C. Junior, Maria José C. Guimarães, Fernanda M. B. Coutinho   +3 more
doaj   +1 more source

Research progress on flexible MXene‐based materials in advanced energy storage devices: From preparation strategies to device applications

FlexMat, EarlyView.
This review summarizes MXene synthesis and flexible electrode fabrication for FESDs, highlighting their potential owing to high conductivity and flexibility, and outlines future research directions. Abstract The rapid development of wearable and portable electronics has created demand for flexible energy storage systems (FESDs) that not only exhibit ...
Nanxi Miao, Ying Lu, Xing Gao, Lingzi Pan, Meng Gao, Chenxi Zhang, Ming Liu, Shizhong Wang, Zhongyu Weng, Huan Pang, Huijie Zhou   +10 more
wiley   +1 more source

Polymerization of allylbenzene with metallocene catalysts

, 1999
Homopolymerization of allylbenzene was carried out with various metallocene/methylaluminoxane (MAO) catalysts. Different polymerization behavior was observed depending upon the catalysts empolyed.
Liu, JW, Byun, DJ, Kim, Sang Youl, Shin, DK   +3 more
core   +1 more source

Preparation of High-Purity Ammonium Tetrakis(pentafluorophenyl)borate for the Activation of Olefin Polymerization Catalysts

Molecules, 2021
Homogeneous olefin polymerization catalysts are activated in situ with a co-catalyst ([PhN(Me)2-H]+[B(C6F5)4]− or [Ph3C]+[B(C6F5)4]−) in bulk polymerization media. These co-catalysts are insoluble in hydrocarbon solvents, requiring excess co-catalyst (>3
Hyun-Ju Lee, Jun-Won Baek, Yeong-Hyun Seo, Hong-Cheol Lee, Sun-Mi Jeong, Junseong Lee, Chong-Gu Lee, Bun-Yeoul Lee   +7 more
doaj   +1 more source

Synthesis and Pd(II) Complexes of an Unsymmetric and Flexible Ferrocene Bisphosphine

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
Insertion of flexible spacers into the pivotal C(ferrocene)P bonds in dppf increases flexibility of the resulting homologated ligands and lowers their tendency to coordinate as P,P′‐chelating ligands. To expand the family of flexible homologated analogs of 1,1′‐bis(diphenylphosphino)ferrocene, the unsymmetric bisphosphine 1‐(diphenylphosphino)‐1′‐[2 ...
Jakub Antala, Matěj Vlček, Ivana Císařová, Petr Štěpnička   +3 more
wiley   +1 more source

Metallocene Based Polyolefin Nanocomposites

, 2014
One of the most efficient and versatile ways to synthesize polyolefin nanocomposites is the in-situ polymerization of olefins in the presence of nano particles by metallocene catalysts.
Walter Kaminsky
core   +1 more source

Supported Organometallics. Highly Electrophilic Cationic Metallocene Hydrogenation and Polymerization Catalysts Formed via Protonolytic Chemisorption on Sulfated Zirconia

, 2016
Supported Organometallics. Highly Electrophilic Cationic Metallocene Hydrogenation and Polymerization Catalysts Formed via Protonolytic Chemisorption on Sulfated ...
Tobin J. Marks (1275348), Hongsang Ahn (2988807)   +1 more
core   +1 more source