Cu(II) complexes with 4,6-bis(3,5-dimethyl-1H-pyrazole-1-yl)pyrimidine, 4-(3,5-dimethyl-1H-pyrazole-1-yl)-6-(3,5-diphenyl-1H-pyrazole-1-yl)pyrimidine: Synthesis and catalytic activity in ethylene polymerization reaction

2007 ◽  
Vol 33 (8) ◽  
pp. 601-606 ◽  
Author(s):  
M. B. Bushuev ◽  
V. P. Krivopalov ◽  
N. V. Semikolenova ◽  
Yu. G. Shvedenkov ◽  
L. A. Sheludyakova ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ethylene Polymerization ◽  
Polymerization Reaction ◽  
Pyrimidine Synthesis

Cobalt(II) and copper(II) complexes with chiral pyrazolylquinoline, a derivative of terpenoid (+)-3-carene. Catalytic activity in ethylene polymerization reaction

2007 ◽  
Vol 33 (6) ◽  
pp. 436-448 ◽  
Author(s):  
S. V. Larionov ◽  
Z. A. Savel’eva ◽  
N. V. Semikolenova ◽  
R. F. Klevtsova ◽  
L. A. Glinskaya ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ethylene Polymerization ◽  
Polymerization Reaction

(Pyrazol-1-yl)carbonyl palladium complexes as catalysts for ethylene polymerization reaction

2013 ◽  
Vol 724 ◽  
pp. 95-101 ◽  
Author(s):  
Hosana D. Mkoyi ◽  
Stephen O. Ojwach ◽  
Ilia A. Guzei ◽  
James Darkwa
Keyword(s):  
Ethylene Polymerization ◽  
Palladium Complexes ◽  
Polymerization Reaction

scholarly journals Effects of Various Mixed Metal Chlorides- AlCl3 in TiCl4/MgCl2/THF Catalytic System on Ethylene Polymerization

2015 ◽  
Vol 14 (2) ◽  
pp. 12
Author(s):  
Nittaya Sudsong ◽  
Wanna Phiwkliang ◽  
Bunjerd Jongsomjit ◽  
Piyasan Praserthdam
Keyword(s):  
Catalytic System ◽  
Ethylene Polymerization ◽  
Catalyst System ◽  
Polymerization Reaction ◽  
Molar Ratio ◽  
Metal Chlorides ◽  
Mixed Metal ◽  
Icp Analysis ◽  
Co Addition

In this research, the modification of TiCl4/MgCl2/THF catalyst system with various metal chlorides was investigated on ethylene polymerization. Experimentally, metal chlorides (CaCl2, FeCl2 and ZnCl2) were simultaneously introduced different with TiCl4/MgCl2/THF catalyst. ICP analysis was used to determine the total amount of each metal in the catalyst. For polymerization reaction, TEA was used as cocatalyst and hexane was used as a medium solvent. The Al/Ti molar ratio was 140. The activity result of Ca-Al, Zn-Al and Fe-Al was 979, 1009 and 1476 kgPE/molTi.h, respectively. The coaddition of AlCl3 and FeCl2 in TiCl4/MgCl2/THF catalyst system exhibited the highest activity. It suggested that the co-addition of AlCl3 and FeCl2 has higher electronegativity (EN) and the radius of Fe2+ is closer to Mg2+ resulting in an increased efficiency of the THF removal. This result led to improve the catalyst performance.

scholarly journals Thermal Effect of Ceramic Nanofiller Aluminium Nitride on Polyethylene Properties

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Omer Bin Sohail ◽  
P. A. Sreekumar ◽  
S. K. De ◽  
Masihullah Jabarullah Khan ◽  
Abbas Hakeem ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ethylene Polymerization ◽  
Filler Loading ◽  
Aluminium Nitride ◽  
Thermal Gravimetric ◽  
X Ray Diffraction ◽  
Sem Images ◽  
Nano Composite ◽  
X Ray ◽  
Thermal Gravimetric Analyzer

Ethylene polymerization was done to form polyethylene nano-composite with nanoaluminum nitride using zirconocene catalysts. Results show that the catalytic activity is maximum at a filler loading of 15 mg nanoaluminum nitride. Differential scanning calorimeter (DSC) and X-ray diffraction (XRD) results show that percentage crystallinity was also marginally higher at this amount of filler. Thermal behavior of polyethylene nanocomposites (0, 15, 30, and 45) mg was studied by DSC and thermal gravimetric analyzer (TGA). Morphology of the component with 15 mg aluminium nitride is more fibrous as compared to 0 mg aluminium nitride and higher filler loading as shown by SEM images. In order to understand combustibility behavior, tests were performed on microcalorimeter. Its results showed decrease in combustibility in polyethylene nanocomposites as the filler loading increases.

scholarly journals Effect of the Reduction of the Nickel-Carbon Catalyst on the Catalytic Activity in Ethylene Polymerization

1968 ◽  
Vol 71 (8) ◽  
pp. 1238-1242
Author(s):  
Toshio TADOKORO ◽  
Teikichi HOSOI ◽  
Masahiko KATSURAYAMA ◽  
Hiroshi KONISHI
Keyword(s):  
Catalytic Activity ◽  
Ethylene Polymerization ◽  
Carbon Catalyst

NNN-type iron(II) complexes consisting sterically hindered dibenzocycloheptyl group: Synthesis and catalytic activity towards ethylene polymerization

2020 ◽  
Vol 492 ◽  
pp. 110981 ◽  
Author(s):  
Muhammad Zada ◽  
Arumugam Vignesh ◽  
Hongyi Suo ◽  
Yanping Ma ◽  
Hua Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ethylene Polymerization ◽  
Sterically Hindered

Trinuclear alkyl hydrido rare-earth complexes supported by amidopyridinato ligands: synthesis, structures, C–Si bond activation and catalytic activity in ethylene polymerization

2014 ◽  
Vol 43 (38) ◽  
pp. 14450-14460 ◽  
Author(s):  
Dmitry M. Lyubov ◽  
Anton V. Cherkasov ◽  
Georgy K. Fukin ◽  
Sergey Yu. Ketkov ◽  
Andrey S. Shavyrin ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Rare Earth ◽  
Ethylene Polymerization ◽  
Bond Activation ◽  
Rare Earth Complexes

[(Ap9MeLu)3(μ2-H)3(μ3-H)2(CH2SiMe3)(thf)2] was synthesized. For Y and Yb C–Si bond activation occurs affording [(Ap9MeLu)3(μ2-H)3(μ3-H)2(CH2SiMe3)(thf)2] and [(Ap9MeLn)3(μ2-H)3(μ3-H)2(CH2SiH2Ph)(thf)2].

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