Bis(alkyl) scandium and yttrium complexes coordinated by an amidopyridinate ligand: synthesis, characterization and catalytic performance in isoprene polymerization, hydroelementation and carbon dioxide hydrosilylation

2020 ◽  
Vol 49 (3) ◽  
pp. 638-650 ◽  
Author(s):  
G. A. Gurina ◽  
A. A. Kissel ◽  
D. M. Lyubov ◽  
L. Luconi ◽  
A. Rossin ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Performance ◽  
Ligand Synthesis ◽  
Yttrium Complexes ◽  
Isoprene Polymerization

Highly versatile and robust organolanthanides as catalysts or catalyst precursors for a variety of challenging transformations.

Catalytic performance of a series of guanidinium-based ionic liquids in the coupling reaction of carbon dioxide with epoxides

RSC Advances ◽  
2016 ◽  
Vol 6 (90) ◽  
pp. 87036-87043 ◽  
Author(s):  
Ping Li ◽  
Ya Li ◽  
Ci Chen ◽  
Li Wang ◽  
Jinglai Zhang
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Cycloaddition Reaction ◽  
Coupling Reaction ◽  
Catalytic Performance

The cycloaddition reaction of CO2 into EO, catalyzed by a series of functional guanidinium-based ionic liquids, is schematically studied by the DFT.

Neodymium dihalide complexes with a tridentate amidinate phosphine oxide ligand: synthesis, structure, and catalytic activity in isoprene polymerization

2019 ◽  
Vol 68 (1) ◽  
pp. 32-39
Author(s):  
A. O. Tolpygin ◽  
O. A. Linnikova ◽  
T. A. Kovylina ◽  
A. V. Cherkasov ◽  
G. K. Fukin ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Phosphine Oxide ◽  
Ligand Synthesis ◽  
Isoprene Polymerization

Catalytic Properties of Ni/CNTs and Ca-Promoted Ni/CNTs for Methanation Reaction of Carbon Dioxide

2014 ◽  
Vol 924 ◽  
pp. 217-226 ◽  
Author(s):  
Xiang Feng Hu ◽  
Wen Yang ◽  
Ning Wang ◽  
Shi Zhong Luo ◽  
Wei Chu
Keyword(s):  
Carbon Dioxide ◽  
Carbon Nanotubes ◽  
Catalytic Activity ◽  
Catalytic Properties ◽  
Supported Catalyst ◽  
Catalytic Performance ◽  
Impregnation Method ◽  
Methanation Reaction ◽  
Ni Species ◽  
Nickel Species

Nickel/carbon nanotubes (Ni/CNTs), Nickel/alumina (Ni/Al2O3), calcium-promoted Ni/CNTs and calcium-promoted Ni/Al2O3 were synthesized by impregnation method. Methanation of carbon dioxide was used as a probe to evaluate their catalytic performance. The features of these Ni-based catalysts were investigated via XRD, H2-TPR, H2-TPD and the N2 adsorptiondesorption isotherms. H2-TPR showed that nickel species on Ni/CNTs was reduced more easily with respect to that on Ni/Al2O3, and addition of Ca can increase the content of easily reducible Ni species for Ni/CNTs. XRD and H2-TPD indicated that addition of Ca promoted dispersion for CNTs-supported catalyst. These finding ultimately enhanced catalytic activity and stability for Ni/CNTs catalyst modified with Ca.

Carbon Dioxide Reforming of Methane over Ni/Mo/La2O3-SBA-15 Сatalyst

2012 ◽  
Vol 455-456 ◽  
pp. 960-965
Author(s):  
Jian Huang ◽  
T. Huang ◽  
A. Rongzhang ◽  
Wei Huang ◽  
Ren Xiong Ma
Keyword(s):  
Carbon Dioxide ◽  
Strong Interaction ◽  
Carbon Deposition ◽  
Catalytic Performance ◽  
Stability Test ◽  
X Ray Diffraction ◽  
Carbon Dioxide Reforming ◽  
X Ray ◽  
Long Term Stability

Carbon dioxide reforming of methane over Ni/Mo/ La2O3-SBA-15 was studied. The catalyst was characterized by N2 adsorption, X-ray diffraction, H2-TPR,CO2-TPD and TG-GTA analysis. The results indicated that the introduction of an appropriate amount of La2O3 exhibited a higher activity and stability. In the long term stability test, La2O3 impregnated Ni/Mo-SBA-15 gave the highest conversion and stable activity at 800°C for 250 h. The effect of La was suggested to be due to its lower tendency to carbon deposition. Characterization results showed a strong interaction between La and Mo or Ni which facilitated the improvement of catalytic performance.

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