Selective Hydrogenation of CO2 to Hydrocarbons: Effects of Fe3O4 Particle Size on Reduction, Carburization, and Catalytic Performance

2021 ◽  
Author(s):  
Junhui Liu ◽  
Kuan Li ◽  
Yakun Song ◽  
Chunshan Song ◽  
Xinwen Guo
Keyword(s):  
Particle Size ◽  
Selective Hydrogenation ◽  
Catalytic Performance ◽  
Fe3o4 Particle ◽  
Hydrogenation Of Co2

Liquid-Phase Selective Hydrogenation of Nitrobenzene over Ultrasonic-Assisted Ni-Mo-P Amorphous Catalyst

2012 ◽  
Vol 550-553 ◽  
pp. 420-423 ◽  
Author(s):  
Qian Wen Dai ◽  
Zi Li Liu ◽  
Cui Xia Xu ◽  
Qi Gang Xie ◽  
Fan Zhang ◽  
...  
Keyword(s):  
Particle Size ◽  
Liquid Phase ◽  
Selective Hydrogenation ◽  
Active Sites ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Catalytic Performance ◽  
Chemical Reduction Method ◽  
Ultrasonic Assisted ◽  
Optimal Reaction

The Ni-Mo-P amorphous catalysts were prepared by chemical reduction method under different sonication conditions. The catalytic performance of the prepared catalysts in selective hydrogenation of nitrobenzene(NB) to aniline(AN) were characterized by XRD, BET, N2-adsorption, H2-TPR and H2-TPD. The results show that the introduction of ultrasonic can improve the dispersion of the active sites in the catalyst, the particle size of the catalyst is also smaller than the regular prepared Ni-Mo-P amorphous catalyst. And the influences of the sonication power and time on the catalysts were discussed and compared. The optimal sonication condition is 70 W within 25 min, its optimal reaction time is 150 min.

Positive Role of Synthesis Method and Hard Template on the Catalytic Performance of SAPO-34 in Methanol to Olefin Reaction.

2020 ◽  
Vol 23 ◽  
Author(s):  
Sajjad Rimaz ◽  
Reza Katal
Keyword(s):  
Particle Size ◽  
Synthesis Method ◽  
Catalytic Performance ◽  
Hard Template ◽  
Structure Directing Agent ◽  
Positive Role ◽  
Methanol To Olefin ◽  
Dg Method ◽  
Synthesis Procedure

: In the present study, SAPO-34 particles were synthesized using hydrothermal (HT) and dry gel (DG) conversion methods in the presence of diethyl amine (DEA) as an organic structure directing agent (SDA). Carbon nanotubes (CNT) were used as hard template in the synthesis procedure to introduce transport pores into the structures of the synthesized samples. The synthesized samples were characterized with different methods to reveal effects of synthesis method and using hard template on their structure and catalytic performance in methanol to olefin reaction (MTO). DG conversion method results in smaller particle size in comparison with hydrothermal method, resulting in enhancing catalytic performance. On the other side, using CNT in the synthesis procedure with DG method results in more reduction in particle size and formation of hierarchical structure which drastically improves catalytic performance.

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

Particle size effects in the selective hydrogenation of cinnamaldehyde over supported palladium catalysts

RSC Advances ◽  
2016 ◽  
Vol 6 (79) ◽  
pp. 75541-75551 ◽  
Author(s):  
Feng Jiang ◽  
Jian Cai ◽  
Bing Liu ◽  
Yuebing Xu ◽  
Xiaohao Liu
Keyword(s):  
Particle Size ◽  
Size Effect ◽  
Selective Hydrogenation ◽  
Size Effects ◽  
Palladium Catalysts ◽  
Particle Size Effect ◽  
Particle Size Effects ◽  
Supported Palladium Catalysts ◽  
Supported Palladium ◽  
Palladium Particles

Palladium particles of different sizes obtained directly and indirectly by various methods were studied to clarify the particle size effect in the selective hydrogenation of cinnamaldehyde (CAL).

Selective hydrogenation of nitroarenes under mild conditions by the optimization of active sites in a well defined Co@NC catalyst

2020 ◽  
Vol 22 (17) ◽  
pp. 5730-5741
Author(s):  
Shuo Chen ◽  
Li-Li Ling ◽  
Shun-Feng Jiang ◽  
Hong Jiang
Keyword(s):  
Particle Size ◽  
Catalytic Hydrogenation ◽  
Selective Hydrogenation ◽  
Active Sites ◽  
Metal Organic Framework ◽  
Nitro Compounds ◽  
Active Species ◽  
Mild Conditions ◽  
Metal Organic ◽  
Aromatic Nitro

The defined catalyst (Co@NC) is prepared through the pyrolysis of the Co-centered metal–organic framework (MOF), in which Co active species (Co–Nx, surface Co NPs) and particle size play important roles in the catalytic hydrogenation of aromatic nitro compounds.

Cobalt–graphene nanomaterial as an efficient catalyst for selective hydrogenation of 5-hydroxymethylfurfural into 2,5-dimethylfuran

2019 ◽  
Vol 9 (6) ◽  
pp. 1329-1333 ◽  
Author(s):  
Fan Yang ◽  
Jingbo Mao ◽  
Shenmin Li ◽  
Jingmei Yin ◽  
Jinxia Zhou ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Selective Hydrogenation ◽  
Catalytic Performance ◽  
Efficient Catalyst ◽  
Reduced Graphene

The synergy of single Co atoms/Co clusters and CoOx nanoparticles, as well as reduced graphene oxide, leads to superior catalytic performance.

Sign in / Sign up

Export Citation Format

Share Document