Efficient and selective hydrogenation of C–O bonds with a simple sodium formate catalyzed by nickel

2018 ◽  
Vol 54 (12) ◽  
pp. 1521-1524 ◽  
Author(s):  
Xiaoxiang Xi ◽  
Tieqiao Chen ◽  
Ji-Shu Zhang ◽  
Li-Biao Han
Keyword(s):  
Selective Hydrogenation ◽  
Sodium Formate ◽  
Nickel Catalysts ◽  
Aryl Ethers

A Ni-catalyzed hydrogenation of C–O compounds with sodium formate is developed. Various esters, i.e. aryl, alkenyl, benzyl pivalates, and even the aryl ethers, were efficiently reduced with a loading of nickel catalysts down to 0.5 mol%.

scholarly journals High-Active Metallic-Activated Carbon Catalysts for Selective Hydrogenation

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Nicolás Carrara ◽  
Carolina Betti ◽  
Fernando Coloma-Pascual ◽  
María Cristina Almansa ◽  
Laura Gutierrez ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Selective Hydrogenation ◽  
Nickel Catalysts ◽  
Metallic Phase ◽  
Hydrogen Chemisorption ◽  
Electronic Effects ◽  
X Ray ◽  
Mild Conditions ◽  
Temperature Programmed ◽  
Carbon Catalysts

A series of low-loaded metallic-activated carbon catalysts were evaluated during the selective hydrogenation of a medium-chain alkyne under mild conditions. The catalysts and support were characterized by ICP, hydrogen chemisorption, Raman spectroscopy, temperature-programmed desorption (TPD), temperature-programmed reduction (TPR), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR micro-ATR), transmission electronic microscopy (TEM), and X-ray photoelectronic spectroscopy (XPS). When studying the effect of the metallic phase, the catalysts were active and selective to the alkene synthesis. NiCl/C was the most active and selective catalytic system. Besides, when the precursor salt was evaluated, PdN/C was more active and selective than PdCl/C. Meanwhile, alkyne is present in the reaction media, and geometrical and electronic effects favor alkene desorption and so avoid their overhydrogenation to the alkane. Under mild conditions, nickel catalysts are considerably more active and selective than the Lindlar catalyst.

Robust Heterogeneous Nickel Catalysts with Tailored Porosity for the Selective Hydrogenolysis of Aryl Ethers

ChemCatChem ◽  
2013 ◽  
Vol 6 (1) ◽  
pp. 91-95 ◽  
Author(s):  
Muhammad Zaheer ◽  
Justus Hermannsdörfer ◽  
Winfried P. Kretschmer ◽  
Günter Motz ◽  
Rhett Kempe
Keyword(s):  
Nickel Catalysts ◽  
Selective Hydrogenolysis ◽  
Aryl Ethers

Cobalt–Nickel Catalysts for Selective Hydrogenation of Carbon Dioxide into Ethanol

ACS Catalysis ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 11335-11340 ◽  
Author(s):  
Lingxiang Wang ◽  
Shenxian He ◽  
Liang Wang ◽  
Ye Lei ◽  
Xiangju Meng ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Selective Hydrogenation ◽  
Nickel Catalysts ◽  
Cobalt Nickel ◽  
Hydrogenation Of Carbon Dioxide

ChemInform Abstract: Robust Heterogeneous Nickel Catalysts with Tailored Porosity for the Selective Hydrogenolysis of Aryl Ethers.

ChemInform ◽  
2014 ◽  
Vol 45 (30) ◽  
pp. no-no
Author(s):  
Muhammad Zaheer ◽  
Justus Hermannsdoerfer ◽  
Winfried P. Kretschmer ◽  
Guenter Motz ◽  
Rhett Kempe
Keyword(s):  
Nickel Catalysts ◽  
Selective Hydrogenolysis ◽  
Aryl Ethers

Selective Hydrogenation of Phenol and Derivatives over Polymer-Functionalized Carbon-Nanofiber-Supported Palladium Using Sodium Formate as the Hydrogen Source

ChemPlusChem ◽  
2013 ◽  
Vol 78 (11) ◽  
pp. 1370-1378 ◽  
Author(s):  
Aibing Chen ◽  
Yonglei Li ◽  
Jinzhu Chen ◽  
Guoying Zhao ◽  
Longlong Ma ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Carbon Nanofiber ◽  
Sodium Formate ◽  
Supported Palladium

scholarly journals Surface Molecule Manipulated Pt/TiO2 Catalysts for Selective Hydrogenation of Cinnamaldehyde

2021 ◽  
Author(s):  
Ran Tao ◽  
Bing-Qian Shan ◽  
Hao-Di Sun ◽  
Meng Ding ◽  
Qing-Song Xue ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Heterogeneous Catalysts ◽  
Selective Adsorption ◽  
Surface States ◽  
Solid Material ◽  
Sodium Formate ◽  
Band Theory ◽  
Saturated Aldehyde ◽  
Fundamental Limitation

<p>Surface states—the electronic states emerging as a solid material terminates at a surface—are usually vulnerable to contaminations and defects. This fundamental limitation has prohibited systematic studies of the potential role of surface states in surface reactions and catalysis, especially in more realistic environments. Herein, we use selective hydrogenation of <a>cinnamaldehyde</a> (CAL) on <a>platinum-covered titanium oxide</a> (Pt@P25) as a prototype reaction, and show that the competitive exchange of extra-introduced species (sodium hydroxide and sodium formate) with spontaneously formed weak bound carbonate and bicarbonate anions at Pt NPs can reconstruct the surface states, which directs the preferred adsorption of the conjugated C=O and C=C double bonds of CAL, and consequently, results in highly efficient synthesis of unsaturated alcohol cinnamyl alcohol (COL) and saturated aldehyde hydrocinnamaldehyde (HCAL) with high selectivity of 98.9% and 99.5%, respectively. Our concept of restructured surface states to tune the chemoselectivity of α, β-unsaturated aldehydes triggered by the selective adsorption of alien molecules may lead to new design principles of heterogeneous catalysts, beyond the conventional d-band theory.</p>

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