Highly dispersed rhodium atoms supported on defect-rich Co(OH)2 for chemoselective hydrogenation of nitroarenes

2021 ◽  
Author(s):  
Huan Fu ◽  
Huan Zhang ◽  
Guichun Yang ◽  
Jun Liu ◽  
Junyuan Xu ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Chemoselective Hydrogenation ◽  
Highly Dispersed

The 0.54%(Pt, Rh, Pd or Ru)/Co(OH)2, 1.23%Rh/Co(OH)2 catalysts were successfully synthesized by simple hydrothermal and precipitation methods for nitroarenes selective hydrogenation, it was found that 0.54%Rh/Co(OH)2 outperformed other catalysts, for...

Chemoselective Hydrogenation of Cinnamaldehyde over Tailored Oxygen Vacancy Rich Pd@ZrO2 Catalyst

2021 ◽  
Author(s):  
Komal N. Patil ◽  
Divya Prasad ◽  
Jayesh T. Bhanushali ◽  
Bhalchandra Kakade ◽  
Arvind H. Jadhav ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Selective Hydrogenation ◽  
Oxygen Vacancies ◽  
Synthesis Method ◽  
Chemoselective Hydrogenation ◽  
Zro2 Catalyst ◽  
Industrial Relevance

Selective hydrogenation of cinnamaldehyde to hydrocinnamaldehyde is captivating due to its industrial relevance. Herein, two-step synthesis method was adopted to develop oxygen vacancies in Pd@ZrO2 catalysts. The oxygen vacancies were...

Selective hydrogenation of 2-pentenal using highly dispersed Pt catalysts supported on ZnSnAl mixed metal oxides derived from layered double hydroxides

2020 ◽  
Vol 10 (4) ◽  
pp. 1106-1116
Author(s):  
Huanjun Wang ◽  
Xiaocheng Lan ◽  
Shiqing Wang ◽  
Babar Ali ◽  
Tiefeng Wang
Keyword(s):  
Metal Oxides ◽  
Layered Double Hydroxides ◽  
Selective Hydrogenation ◽  
High Selectivity ◽  
Mixed Metal Oxides ◽  
Pt Catalysts ◽  
Mixed Metal ◽  
Highly Dispersed ◽  
Double Hydroxides

Highly dispersed Pt catalysts supported on ZnSnAl mixed metal oxides showed high selectivity for 2-pentenol in selective hydrogenation of 2-pentenal.

scholarly journals MOF-derived Ni-based nanocomposites as robust catalysts for chemoselective hydrogenation of functionalized nitro compounds

RSC Advances ◽  
2017 ◽  
Vol 7 (3) ◽  
pp. 1531-1539 ◽  
Author(s):  
Bo Tang ◽  
Wei-Chao Song ◽  
En-Cui Yang ◽  
Xiao-Jun Zhao
Keyword(s):  
Catalytic Performance ◽  
Nitro Compounds ◽  
Graphitic Carbon ◽  
Ni Nanoparticles ◽  
Chemoselective Hydrogenation ◽  
Highly Dispersed

Highly dispersed Ni nanoparticles within graphitic carbon layers were prepared by facile thermolysis of a Ni-MOF, which exhibited outstanding catalytic performance in the chemoselective hydrogenation of diverse functionalized nitro compounds.

Copper nanoparticles socketed in situ into copper phyllosilicate nanotubes with enhanced performance for chemoselective hydrogenation of esters

2017 ◽  
Vol 53 (51) ◽  
pp. 6933-6936 ◽  
Author(s):  
Xiaoxiao Gong ◽  
Meiling Wang ◽  
Huihuang Fang ◽  
Xiaoqi Qian ◽  
Linmin Ye ◽  
...  
Keyword(s):  
Copper Nanoparticles ◽  
Selective Hydrogenation ◽  
Elevated Temperatures ◽  
Catalytic Performance ◽  
Reducing Atmosphere ◽  
Chemoselective Hydrogenation ◽  
Excellent Catalytic Performance

Copper nanoparticles exsoluted in situ under a reducing atmosphere at elevated temperatures are socketed into the parent copper phyllosilicate nanotubes and exhibit excellent catalytic performance and superior stability for the selective hydrogenation of various esters to alcohols.

scholarly journals Supported Bimetallic AuPd Nanoparticles as Catalyst for the Solvent-Free Selective Hydrogenation of Nitroarenes

2018 ◽  
Author(s):  
Ruiyang Qu ◽  
Margherita Macino ◽  
Sarwat Iqbal ◽  
Xiang Gao ◽  
Qian He ◽  
...  
Keyword(s):  
Activation Energy ◽  
Reaction Temperature ◽  
Selective Hydrogenation ◽  
Energy Input ◽  
Solvent Free ◽  
Impregnation Method ◽  
Efficient Catalyst ◽  
Effective Catalyst ◽  
Chemoselective Hydrogenation ◽  
Solvent Free Conditions

Selective hydrogenation of nitrobenzene was carried out under solvent-free conditions using supported AuPd nanoparticles catalyst, prepared by modified impregnation method (MIm), as efficient catalyst. >99% yield of aniline (AN) was obtained after 15 hours at 90 °C, 3 bar H2 that can be used without any further purification or separation, therefore reducing cost and energy input. Supported AuPd nanoparticles catalyst, prepared by MIm, was found to be active and stable even after 4 recycle experiments whereas the same catalyst prepared by SIm deactivated during the recycle experiments. The most effective catalyst was tested for the chemoselective hydrogenation of 4-chloronitrobenzene (CNB) to 4-chloroaniline (CAN). The activation energy of CNB to CAN was found to be 25 kJ mol-1, while that of CNB to AN was found to be 31 kJ mol-1. Based on this, the yield of CAN was maximized (92%) by lowering the reaction temperature to 25 °C.

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