Controllable synthesis of 3D hierarchical Co3O4 nanocatalysts with various morphologies for the catalytic oxidation of toluene

2018 ◽  
Vol 6 (2) ◽  
pp. 498-509 ◽  
Author(s):  
Quanming Ren ◽  
Shengpeng Mo ◽  
Ruosi Peng ◽  
Zhentao Feng ◽  
Mingyuan Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Physicochemical Properties ◽  
Catalytic Oxidation ◽  
Controllable Synthesis

Morphology plays an important role in the physicochemical properties and catalytic activity of Co3O4 catalysts.

Effect of sodium persulfate treatment on the physicochemical properties and catalytic activity of biochar prepared from spent malt rootlets

2021 ◽  
Vol 9 (2) ◽  
pp. 105071
Author(s):  
Paraskevi Ntzoufra ◽  
John Vakros ◽  
Zacharias Frontistis ◽  
Sotirios Tsatsos ◽  
Georgios Kyriakou ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Physicochemical Properties ◽  
Sodium Persulfate

scholarly journals A new highly active La2O3–CuO–MgO catalyst for the synthesis of cumyl peroxide by catalytic oxidation

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12532-12542
Author(s):  
HanShuang Liu ◽  
KaiJun Wang ◽  
XiaoYan Cao ◽  
JiaXin Su ◽  
Zhenggui Gu
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
Highly Active

The La2O3–CuO–MgO catalyst acts on the oxidation of cumene and shows excellent catalytic activity through the coordination of surface and interior.

scholarly journals Low platinum alloy catalyst PtCo3 obtaining high catalytic activity and stability with great water and CO2 resistance for catalytic oxidation of toluene

Fuel ◽  
2022 ◽  
Vol 307 ◽  
pp. 121794
Author(s):  
Jianwu Zou ◽  
Yankun Du ◽  
Rongjia Fang ◽  
Xiaoshuang Duan ◽  
Yangjia Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
High Catalytic Activity ◽  
Platinum Alloy ◽  
Alloy Catalyst

Synthesis and Catalytic Activity Studies of V/K/Ca and V/Ks/Ce Based Catalysts for Diesel Soot Oxidation

2007 ◽  
Vol 336-338 ◽  
pp. 1995-1998
Author(s):  
Yong Heng Zhang ◽  
Jian Zhong Xue
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
Amorphous Phase ◽  
Porous Alumina ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Oxidation Activity ◽  
Diesel Soot Oxidation ◽  
Oxidation Onset Temperature ◽  
Catalyst Systems

The catalysts based on V/K/Ca and V/Ks/Ce systems for diesel soot catalytic oxidation were synthesized onto the porous alumina substrates. Both catalyst systems showed a good catalytic oxidation activity. The V/K/Ca system exhibited the lowest oxidation onset temperature (OOT) of about 359oC with a composition of V/K/Ca =1:1:0.1 where the V and Ca and/or K elements could form a kind of amorphous phase that determined the catalytic activity. The V/Ks/Ce system displayed the lowest OOT of about 350oC with a composition of V/Ks/Ce = 1:2:0.1 where the K2SO4 and K5V2O3(SO4)4 phases could contribute most to the catalytic activity.

Controllable synthesis of magnetic Fe3O4 encapsulated semimetal Bi nanospheres with excellent stability and catalytic activity

2018 ◽  
Vol 53 (19) ◽  
pp. 13886-13899 ◽  
Author(s):  
Wei Wei ◽  
Wei Sun ◽  
Huihui Hu ◽  
Zhifeng Jiang ◽  
Lirong Ma ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Controllable Synthesis ◽  
Magnetic Fe3o4 ◽  
Excellent Stability

Controllable synthesis of urchin-like hierarchical superstructure MOFs with high catalytic activity and stability

2021 ◽  
Author(s):  
Zhanke Wang ◽  
Lei Ge ◽  
Guangxu Zhang ◽  
Rongrong Gao ◽  
Hao Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Activity ◽  
Metal Organic Frameworks ◽  
High Catalytic Activity ◽  
Controllable Synthesis ◽  
Metal Organic ◽  
Self Assembled

A novel dissolution-crystallization strategy was developed to synthesize urchin-like superstructure metal-organic frameworks (MOFs) with self-assembled 1D nanorods. The superstructure MOFs not only inherit the high activity of nano-sized MOFs but...

scholarly journals Catalytic Oxidation of Chlorobenzene over Pd-TiO2 /Pd-Ce/TiO2 Catalysts

Catalysts ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 347 ◽  
Author(s):  
Wenjun Liang ◽  
Xiaoyan Du ◽  
Yuxue Zhu ◽  
Sida Ren ◽  
Jian Li
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
Calcination Temperature ◽  
Catalyst Activity ◽  
Space Velocity ◽  
Impregnation Method ◽  
Tio2 Catalyst ◽  
Metal Support ◽  
Oxidation Efficiency

A series of Pd-TiO2/Pd-Ce/TiO2 catalysts were prepared by an equal volume impregnation method. The effects of different Pd loadings on the catalytic activity of chlorobenzene (CB) were investigated, and the results showed that the activity of the 0.2%-0.3% Pd/TiO2 catalyst was optimal. The effect of Ce doping enhanced the catalytic activity of the 0.2% Pd-0.5% Ce/TiO2 catalyst. The characterization of the catalysts using BET, TEM, H2-TPR, and O2-TPD showed that the oxidation capacity was enhanced, and the catalytic oxidation efficiency was improved due to the addition of Ce. Ion chromatography and Gas Chromatography-Mass Spectrometer results showed that small amounts of dichlorobenzene (DCB) and trichlorobenzene (TCB) were formed during the decomposition of CB. The results also indicated that the calcination temperature greatly influenced the catalyst activity and a calcination temperature of 550 °C was the best. The concentration of CB affected its decomposition, but gas hourly space velocity had little effect. H2-TPR indicated strong metal–support interactions and increased dispersion of PdO in the presence of Ce. HRTEM data showed PdO with a characteristic spacing of 0.26 nm in both 0.2% Pd /TiO2 and 0.2% Pd-0.5% Ce/TiO2 catalysts. The average sizes of PdO nanoparticles in the 0.2% Pd/TiO2 and 0.2% Pd-0.5% Ce/TiO2 samples were 5.8 and 4.7 nm, respectively. The PdO particles were also deposited on the support and they were separated from each other in both catalysts.

Pore size effects on physicochemical properties of Fe-Co/K-Al2O3 catalysts and their catalytic activity in CO2 hydrogenation to light olefins

2019 ◽  
Vol 483 ◽  
pp. 581-592 ◽  
Author(s):  
Thanapha Numpilai ◽  
Narong Chanlek ◽  
Yingyot Poo-Arporn ◽  
Suttipong Wannapaiboon ◽  
Chin Kui Cheng ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Physicochemical Properties ◽  
Pore Size ◽  
Size Effects ◽  
Co2 Hydrogenation ◽  
Light Olefins

Catalytic oxidation of diorganosilanes to 1,1,3,3-tetraorganodisiloxanes with gold nanoparticle assembly at the water–chloroform interface

2019 ◽  
Vol 43 (2) ◽  
pp. 813-819 ◽  
Author(s):  
Ravi Shankar ◽  
Asmita Sharma ◽  
Bhawana Jangir ◽  
Manchal Chaudhary ◽  
Gabriele Kociok-Köhn
Keyword(s):  
Catalytic Activity ◽  
Ambient Temperature ◽  
Catalytic Oxidation ◽  
Gold Nanoparticle ◽  
Photothermal Effect ◽  
Nanoparticle Assembly

The synthesis of 1,1,3,3-tetraorganodisiloxanes from the hydrolytic oxidation of diorganosilanes, RR1SiH2, using AuNPs as an interfacial catalyst is described. This study provides a manifestation of the photothermal effect in enhancing the catalytic activity at ambient temperature.

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