scholarly journals Dendrimer crown-ether tethered multi-wall carbon nanotubes support methyltrioxorhenium in the selective oxidation of olefins to epoxides

RSC Advances ◽  
2020 ◽  
Vol 10 (29) ◽  
pp. 17185-17194
Author(s):  
Bruno Mattia Bizzarri ◽  
Angelica Fanelli ◽  
Lorenzo Botta ◽  
Claudia Sadun ◽  
Lorenzo Gontrani ◽  
...  

Benzo-15-crown-5 ether supported on multi-wall carbon nanotubes (MWCNTs) by tethered poly(amidoamine) (PAMAM) dendrimers efficiently coordinated methyltrioxorhenium in the selective oxidation of olefins to epoxides.

2011 ◽  
Vol 11 (6) ◽  
pp. 5539-5545 ◽  
Author(s):  
J. P. Camarena ◽  
H. Espinoza-Gómez ◽  
R. Somanathan ◽  
H. Tiznado ◽  
E. Vélez-López ◽  
...  

2003 ◽  
Vol 772 ◽  
Author(s):  
T. Seeger ◽  
G. de la Fuente ◽  
W.K. Maser ◽  
A.M. Benito ◽  
A. Righi ◽  
...  

AbstractCarbon nanotubes (CNT) are interesting candidates for the reinforcement in robust composites and for conducting fillers in polymers due to their fascinating electronic and mechanical properties. For the first time, we report the incorporation of multi walled carbon nanotubes (MWNTs) into silica-glass surfaces by means of partial surface-melting caused by a continuous wave Nd:YAG laser. MWNTs were detected being well incorporated in the silica-surface. The composites are characterized using scanning electron microscopy (SEM) and Raman-spectroscopy. A model for the composite-formation is proposed based on heatabsorption by MWNTs and a partial melting of the silica-surface.


2011 ◽  
Vol 26 (1) ◽  
pp. 73-77 ◽  
Author(s):  
Meng-Li ZHAO ◽  
Yu-Chen YUE ◽  
Li YUAN ◽  
De-Jun LI ◽  
Xiao-Ying LÜ ◽  
...  

Author(s):  
C. Sridevi ◽  
A. Sailakumari

Background: In this paper, transient two-dimensional laminar boundary layer viscous incompressible free convective flow of water based nanofluid with carbon nanotubes (CNTs) past a moving vertical cylinder with variable surface temperature is studied numerically in the presence of thermal radiation and heat generation. Methods: The prevailing partial differential equations which model the flow with initial and boundary conditions are solved by implicit finite difference method of Crank Nicolson type which is unconditionally stable and convergent. Results: Influence of Grashof number (Gr), nanoparticle volume fraction ( ), heat generation parameter (Q), temperature exponent (m), radiation parameter (N) and time (t) on velocity and temperature profiles are sketched graphically and elaborated comprehensively. Conclusion: Analysis of Nusselt number and Skin friction coefficient are also discussed numerically for both single wall carbon nanotubes (SWCNTs) and multi wall carbon nanotubes (MWCNTs).


2020 ◽  
Vol 62 (11) ◽  
pp. 2173-2183
Author(s):  
V. V. Bolotov ◽  
E. V. Knyazev ◽  
P. M. Korusenko ◽  
S. N. Nesov ◽  
V. A. Sachkov

2021 ◽  
Vol 853 ◽  
pp. 156880
Author(s):  
Xiaohua Qi ◽  
Wenna Zhang ◽  
Na Yang ◽  
Di Yang ◽  
Igor Bychko ◽  
...  

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