Promoting Effect and Role of Alkaline Earth Metal Added to Supported Ag Catalysts in the Gas-Phase Catalytic Oxidation of Benzyl Alcohol

2006 ◽  
Vol 45 (26) ◽  
pp. 8837-8845 ◽  
Author(s):  
Yo-suke Sawayama ◽  
Hiroshi Shibahara ◽  
Yuichi Ichihashi ◽  
Satoru Nishiyama ◽  
Shigeru Tsuruya
Keyword(s):  
Benzyl Alcohol ◽  
Catalytic Oxidation ◽  
Gas Phase ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
Promoting Effect ◽  
Oxidation Of Benzyl Alcohol ◽  
Ag Catalysts

Promoting effect and role of alkaline earth metal added to ZrO2-TiO2-supported CeO2 for dichloromethane oxidation

2020 ◽  
Vol 396 ◽  
pp. 125193
Author(s):  
Ning Gao ◽  
Yukang Zhou ◽  
Mengjie Fan ◽  
Haitao Xu ◽  
Yingwen Chen ◽  
...  
Keyword(s):  
Alkaline Earth ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
Promoting Effect

Promoted partial oxidation activity of supported Ag catalysts in the gas-phase catalytic oxidation of benzyl alcohol

2005 ◽  
Vol 234 (2) ◽  
pp. 308-317 ◽  
Author(s):  
R YAMAMOTO ◽  
Y SAWAYAMA ◽  
H SHIBAHARA ◽  
Y ICHIHASHI ◽  
S NISHIYAMA ◽  
...  
Keyword(s):  
Benzyl Alcohol ◽  
Catalytic Oxidation ◽  
Gas Phase ◽  
Partial Oxidation ◽  
Oxidation Activity ◽  
Oxidation Of Benzyl Alcohol ◽  
Ag Catalysts

Two new alkaline earth metal organic frameworks with the diamino derivative of biphenyl-4,4′-dicarboxylate as bridging ligand: Structures, fluorescence and quenching by gas phase aldehydes

Polyhedron ◽  
2018 ◽  
Vol 153 ◽  
pp. 173-180 ◽  
Author(s):  
Stavros A. Diamantis ◽  
Anastasia D. Pournara ◽  
Antonios G. Hatzidimitriou ◽  
Manolis J. Manos ◽  
Giannis S. Papaefstathiou ◽  
...  
Keyword(s):  
Gas Phase ◽  
Alkaline Earth ◽  
Metal Organic Frameworks ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
Bridging Ligand ◽  
Metal Organic

scholarly journals Structure-guided DNA–DNA attraction mediated by divalent cations

2020 ◽  
Author(s):  
Amit Srivastava ◽  
Raju Timsina ◽  
Seung Heo ◽  
Sajeewa W Dewage ◽  
Serdal Kirmizialtin ◽  
...  
Keyword(s):  
Electrostatic Interactions ◽  
Alkaline Earth ◽  
Divalent Cations ◽  
Random Sequence ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
Sequence Dependent ◽  
Phosphate Backbone ◽  
Alkaline Earth Metal Ions

Abstract Probing the role of surface structure in electrostatic interactions, we report the first observation of sequence-dependent dsDNA condensation by divalent alkaline earth metal cations. Disparate behaviors were found between two repeating sequences with 100% AT content, a poly(A)-poly(T) duplex (AA-TT) and a poly(AT)-poly(TA) duplex (AT-TA). While AT-TA exhibits non-distinguishable behaviors from random-sequence genomic DNA, AA-TT condenses in all alkaline earth metal ions. We characterized these interactions experimentally and investigated the underlying principles using computer simulations. Both experiments and simulations demonstrate that AA-TT condensation is driven by non-specific ion–DNA interactions. Detailed analyses reveal sequence-enhanced major groove binding (SEGB) of point-charged alkali ions as the major difference between AA-TT and AT-TA, which originates from the continuous and close stacking of nucleobase partial charges. These SEGB cations elicit attraction via spatial juxtaposition with the phosphate backbone of neighboring helices, resulting in an azimuthal angular shift between apposing helices. Our study thus presents a distinct mechanism in which, sequence-directed surface motifs act with cations non-specifically to enact sequence-dependent behaviors. This physical insight allows a renewed understanding of the role of repeating sequences in genome organization and regulation and offers a facile approach for DNA technology to control the assembly process of nanostructures.

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