Overcoming Limitations in the Strong Interaction between Pt and Irreducible SiO2 Enables Efficient and Selective Hydrogenation of Anthracene

2021 ◽  
Author(s):  
Xiao Chen ◽  
Xing-Bao Wang ◽  
Shuhua Han ◽  
Dong Wang ◽  
Chuang Li ◽  
...  
Keyword(s):  
Strong Interaction ◽  
Selective Hydrogenation

scholarly journals Effects of TiO2 structure and Co addition as a second metal on Ru-based catalysts supported on TiO2 for selective hydrogenation of furfural to FA

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Weerachon Tolek ◽  
Natdanai Nanthasanti ◽  
Boontida Pongthawornsakun ◽  
Piyasan Praserthdam ◽  
Joongjai Panpranot
Keyword(s):  
Strong Interaction ◽  
Selective Hydrogenation ◽  
Sol Gel ◽  
Reaction Conditions ◽  
Hydrogenation Activity ◽  
Co Catalysts ◽  
Alloying System ◽  
Mild Conditions ◽  
Co Addition ◽  
Catalytic Performances

AbstractThe TiO2 supported Ru-based catalysts were prepared with 1.5 wt% Ru and 0–0.8 wt% Co on various TiO2 (anatase, rutile, P-25, and sol–gel TiO2) and studied in the liquid-phase selective hydrogenation of furfural to furfuryl alcohol (FA) under mild conditions (50 °C and 2 MPa H2). The presence of high anatase crystallographic composition on TiO2 support was favorable for enhancing hydrogenation activity, while the strong interaction between Ru and TiO2 (Ru–TiOx sites) was required for promoting the selectivity to FA. The catalytic performances of bimetallic Ru–Co catalysts were improved with increasing Co loading due to the synergistic effect of Ru–Co alloying system together with the strong interaction between Ru and Co as revealed by XPS, H2-TPR, and TEM–EDX results. The enhancement of reducibility of Co oxides in the bimetallic Ru–Co catalysts led to higher hydrogenation activity with the Ru–0.6Co/TiO2 catalyst exhibited the best performances in FA selective hydrogenation of furfural to FA under the reaction conditions used.

Enhanced strong metal–support interactions between Pt and WO3–x nanowires for the selective hydrogenation of p-chloronitrobenzene

2021 ◽  
Vol 45 (38) ◽  
pp. 18065-18069
Author(s):  
Hongbo Yu ◽  
Zhiyong Yu ◽  
Fan Yang ◽  
Xuedong Yan ◽  
Hongfeng Yin
Keyword(s):  
Strong Interaction ◽  
Selective Hydrogenation ◽  
Catalytic Performance ◽  
Metal Support ◽  
Metal Support Interactions

Pt/WO3–x nanocatalysts demonstrate significantly enhanced catalytic performance due to the strong interaction between Pt and WO3–x nanowires.

Selective Hydrogenation of Benzene to Cyclohexene over Ru-Zn Catalyst with Nanosized Zirconia as Dispersant

2010 ◽  
Vol 31 (2) ◽  
pp. 150-152
Author(s):  
Zhongyi LIU ◽  
Haijie SUN ◽  
Dongbin WANG ◽  
Wei GUO ◽  
Xiaoli ZHOU ◽  
...  
Keyword(s):  
Selective Hydrogenation

Selective Hydrogenation of Crotonaldehyde over Pt/Ce0.8La0.2O1.9 Catalysts

2011 ◽  
Vol 32 (3) ◽  
pp. 513-519
Author(s):  
Ping CHEN ◽  
Guanqun XIE ◽  
Haiying ZHENG ◽  
Lin ZHU ◽  
Mengfei LUO
Keyword(s):  
Selective Hydrogenation

Effects of Reduction Temperature on Selective Hydrogenation of Crotonalde-hyde over Ir/ZrO2 Catalyst

2013 ◽  
Vol 33 (2) ◽  
pp. 348-353
Author(s):  
Lin ZHU ◽  
Jiqing LU ◽  
Guanqun XIE ◽  
Ping CHEN ◽  
Mengfei LUO
Keyword(s):  
Selective Hydrogenation ◽  
Reduction Temperature

Conformation and electronic structure of aromatic chloroformates

1987 ◽  
Vol 52 (4) ◽  
pp. 970-979 ◽  
Author(s):  
Otto Exner ◽  
Pavel Fiedler
Keyword(s):  
Electronic Structure ◽  
Oxygen Atom ◽  
Strong Interaction ◽  
Electron Distribution ◽  
Room Temperature ◽  
Functional Group ◽  
Dipole Moments ◽  
Carbonyl Oxygen ◽  
Nonpolar Solvents ◽  
Single Method

Aromatic chloroformates Ib-Ie were shown to exist in the ap conformation, in agreement with aliphatic chloroformates, i.e. the alkyl group is situated cis to the carbonyl oxygen atom as it is the case in all esters. While 4-nitrophenyl chloroformate (Ie) is in this conformation in crystal, in solution at most several tenths of percent of the sp conformation may be populated at room temperature and in nonpolar solvents only. A new analysis of dipole moments explained the previous puzzling results and demonstrated the impossibility to determine the conformation by this single method, in consequence of the strong interaction of adjoining bonds. If, however, the ap conformation is once proven, the dipole moments reveal some features of the electron distribution on the functional group, characterized by the enhanced polarity of the C-Cl bond and reduced polarity of the C=O bond. This is in agreement with the observed bond lengths and angles.

Effects of impregnation solvent and reduction temperature on the catalytic performance of Pd/Al2O3 in the selective hydrogenation of 1,3-butadiene

2011 ◽  
Vol 103 (2) ◽  
pp. 405-417 ◽  
Author(s):  
Kanda Pattamakomsan ◽  
Francisco Jose Cadete Santos Aires ◽  
Kongkiate Suriye ◽  
Joongjai Panpranot
Keyword(s):  
Selective Hydrogenation ◽  
Catalytic Performance ◽  
Reduction Temperature
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