E.s.r. and ENDOR spectra of paramagnetic complexes of quinones with Lewis acid centers in thermally activated Y-type zeolites

Zeolites ◽  
1991 ◽  
Vol 11 (3) ◽  
pp. 282-286 ◽  
Author(s):  
A.V. Astashkin ◽  
R.I. Samoilova
Keyword(s):  
Lewis Acid ◽  
Thermally Activated ◽  
Acid Centers ◽  
Paramagnetic Complexes

ENDOR study of anthraquinone paramagnetic complexes with Lewis acid centers of aluminium oxide

1991 ◽  
Vol 2 (4) ◽  
pp. 675-681 ◽  
Author(s):  
E. V. Lunina ◽  
G. L. Markaryan ◽  
A. V. Fionov ◽  
A. V. Astashkin ◽  
R. I. Samoilova ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Aluminium Oxide ◽  
Acid Centers ◽  
Paramagnetic Complexes

Disk Lubricants of Ultimate Design

2016 ◽  
Author(s):  
Paul H. Kasai
Keyword(s):  
Lewis Acid ◽  
Lewis Base ◽  
Carbon Substrate ◽  
Lubricant Degradation ◽  
Disk Drives ◽  
Current Generation ◽  
Monomolecular Film ◽  
Disk Lubricant ◽  
Acid Centers ◽  
Acid Catalyzed

In disk drives of current generation, the thickness of the disk lubricant has been reduced to the level of a sub-monomolecular film. For a mono- or a sub-monomolecular film of a perfluoropolyether terminated with a primary hydroxyl unit at both ends, each lubricant molecular chain is chemically bound to the carbon substrate at both termini, and if it has a hydrocarbon sector inserted at its center, the hydrocarbon sectors would assemble at the top of the film. They are thus poised most aptly to react as a Lewis base (an electron donor) to the Lewis acid centers on the slider thus abating the Lewis acid-catalyzed lubricant degradation.

Boron and other Triel Lewis Acid Centers: From Hypovalency to Hypervalency

ChemPhysChem ◽  
2014 ◽  
Vol 15 (14) ◽  
pp. 2985-2993 ◽  
Author(s):  
Sławomir J. Grabowski
Keyword(s):  
Lewis Acid ◽  
Acid Centers

scholarly journals The crucial roles of guest water in a biocompatible coordination network in the catalytic ring-opening polymerization of cyclic esters: a new mechanistic perspective

2020 ◽  
Vol 11 (12) ◽  
pp. 3345-3354 ◽  
Author(s):  
Sheng-Chun Chen ◽  
Fei-Hang Zhang ◽  
Kun-Lin Huang ◽  
Feng Tian ◽  
Zhi-Hui Zhang ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Cyclic Esters ◽  
Polymerization Mechanism ◽  
Synergistic Catalysis ◽  
Coordination Network ◽  
Coordination Framework ◽  
Acid Centers ◽  
Brønsted And Lewis Acid

A new ring-opening polymerization mechanism is unveiled based on synergistic catalysis involving Brønsted and Lewis acid centers in a coordination framework.

Methane activation by metal-free Lewis acid centers only – a computational design and mechanism study

2016 ◽  
Vol 18 (16) ◽  
pp. 11539-11549 ◽  
Author(s):  
Gongli Ma ◽  
Zhen Hua Li
Keyword(s):  
Lewis Acid ◽  
Computational Design ◽  
Design Strategy ◽  
Methane Activation ◽  
Mechanism Study ◽  
Metal Free ◽  
Acid Centers

The design strategy and mechanism of methane activation by metal-free Lewis acidic silylboranes is investigated.

Quantum-chemical investigation of the formation of Lewis acid centers of high-siliceous zeolites

2000 ◽  
Vol 158 (1) ◽  
pp. 481-486 ◽  
Author(s):  
A.A Lamberov ◽  
An.M Kuznetsov ◽  
M.S Shapnik ◽  
A.N Masliy ◽  
S.V Borisevich ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Quantum Chemical ◽  
Chemical Investigation ◽  
Quantum Chemical Investigation ◽  
Acid Centers

IR-spectroscopic study of lewis acid centers on polyzirconiummethylsiloxanes

2010 ◽  
Vol 84 (7) ◽  
pp. 1226-1229
Author(s):  
L. M. Kustov ◽  
O. P. Tkachenko ◽  
L. A. Bondar’
Keyword(s):  
Spectroscopic Study ◽  
Lewis Acid ◽  
Acid Centers ◽  
Ir Spectroscopic

ChemInform Abstract: Design of Lewis-Acid Centers in Zeolitic Matrices for the Conversion of Renewables

ChemInform ◽  
2015 ◽  
Vol 46 (48) ◽  
pp. no-no
Author(s):  
Pierre Y. Dapsens ◽  
Cecilia Mondelli ◽  
Javier Perez-Ramirez
Keyword(s):  
Lewis Acid ◽  
Acid Centers
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