Novel monocyclopentadienyl zirconium and hafnium trialkoxide complexes: Syntheses and catalytic properties for olefin polymerization

2010 ◽  
pp. NA-NA ◽  
Author(s):  
Ting-Jui Hsiao ◽  
Jing-Cherng Tsai
Keyword(s):  
Olefin Polymerization ◽  
Catalytic Properties

Synthesis and characterization of chromium complexes 2-Me4CpC6H4CH2(R)NHCrCl2 and their catalytic properties in ethylene homo- and co-polymerization

2019 ◽  
Vol 48 (15) ◽  
pp. 4912-4920 ◽  
Author(s):  
Tingting Song ◽  
Xin Tao ◽  
Xiaobo Tong ◽  
Ning Liu ◽  
Wei Gao ◽  
...  
Keyword(s):  
Secondary Amine ◽  
Olefin Polymerization ◽  
Catalytic Properties ◽  
Synthesis And Characterization ◽  
Chromium Complexes

New half-metallocene chromium complexes with a coordinated secondary amine side-arm were synthesized and studied as catalysts for olefin polymerization.

Synthesis and catalytic properties for olefin polymerization of new vanadium complexes containing silsesquioxane ligands with different denticity

2017 ◽  
Vol 66 (6) ◽  
pp. 960-967 ◽  
Author(s):  
Marzena Białek ◽  
Monika Pochwała ◽  
Adrian Franczyk ◽  
Krystyna Czaja ◽  
Bogdan Marciniec
Keyword(s):  
Olefin Polymerization ◽  
Catalytic Properties ◽  
Vanadium Complexes

Titanium and zirconium complexes bearing new tridentate [OSO] bisphenolato-based ligands: synthesis, characterization and catalytic properties for alkene polymerization

2019 ◽  
Vol 48 (36) ◽  
pp. 13719-13731
Author(s):  
Tingting Song ◽  
Jianghao He ◽  
Liwei Liang ◽  
Ning Liu ◽  
Feng Li ◽  
...  
Keyword(s):  
Olefin Polymerization ◽  
Catalytic Properties ◽  
Alkene Polymerization ◽  
Zirconium Complexes

Titanium and zirconium complexes with new tridentate [OSO] ligands were synthesized and studied as catalysts for olefin polymerization reactions.

Microstructure and reactivity of small metal particles: The role of Ce additives

1992 ◽  
Vol 50 (1) ◽  
pp. 318-319
Author(s):  
L.D. Schmidt ◽  
K. R. Krause ◽  
J. M. Schwartz ◽  
X. Chu
Keyword(s):  
Atmospheric Pressure ◽  
Noble Metals ◽  
Mixed Oxides ◽  
Catalytic Properties ◽  
Chemical Shifts ◽  
Catalytic Converter ◽  
Structural Evolution ◽  
Single Particles ◽  
Small Metal Particles

The evolution of microstructures of 10- to 100-Å diameter particles of Rh and Pt on SiO2 and Al2O3 following treatment in reducing, oxidizing, and reacting conditions have been characterized by TEM. We are able to transfer particles repeatedly between microscope and a reactor furnace so that the structural evolution of single particles can be examined following treatments in gases at atmospheric pressure. We are especially interested in the role of Ce additives on noble metals such as Pt and Rh. These systems are crucial in the automotive catalytic converter, and rare earths can significantly modify catalytic properties in many reactions. In particular, we are concerned with the oxidation state of Ce and its role in formation of mixed oxides with metals or with the support. For this we employ EELS in TEM, a technique uniquely suited to detect chemical shifts with ∼30Å resolution.

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