Hydrogenation of phenol in aqueous phase with palladium on activated carbon catalysts

2007 ◽  
Vol 131 (1-3) ◽  
pp. 65-71 ◽  
Author(s):  
E. Díaz ◽  
A.F. Mohedano ◽  
L. Calvo ◽  
M.A. Gilarranz ◽  
J.A. Casas ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Phase ◽  
Carbon Catalysts

Identification of by-products and toxicity assessment in aqueous-phase hydrodechlorination of diuron with palladium on activated carbon catalysts

Chemosphere ◽  
2013 ◽  
Vol 91 (9) ◽  
pp. 1317-1323 ◽  
Author(s):  
M. Al Bahri ◽  
L. Calvo ◽  
A.M. Polo ◽  
M.A. Gilarranz ◽  
A.F. Mohedano ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Phase ◽  
Toxicity Assessment ◽  
Carbon Catalysts ◽  
By Products

Hydroxyl radical generation by cactus-like copper oxide nanoporous carbon catalysts for microcystin-LR environmental remediation

2016 ◽  
Vol 6 (2) ◽  
pp. 530-544 ◽  
Author(s):  
S. Karthikeyan ◽  
Dionysios D. Dionysiou ◽  
Adam F. Lee ◽  
S. Suvitha ◽  
P. Maharaja ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Copper Oxide ◽  
Hydroxyl Radical ◽  
Aqueous Phase ◽  
Environmental Remediation ◽  
Nanoporous Carbon ◽  
Catalytic Degradation ◽  
Radical Generation ◽  
Carbon Catalysts ◽  
Nanoporous Activated Carbon

Copper oxide supported on nanoporous activated carbon (CuO-NPAC) is reported for the aqueous phase catalytic degradation of cyanotoxin microcystin-LR (MC-LR).

Hydrogenation of sodium hydrogen carbonate in aqueous phase using metal/activated carbon catalysts

2018 ◽  
Vol 224 ◽  
pp. 368-375 ◽  
Author(s):  
Edelmira González ◽  
Cristian Marchant ◽  
Catherine Sepúlveda ◽  
Rafael García ◽  
I.Tyrone Ghampson ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Phase ◽  
Sodium Hydrogen Carbonate ◽  
Sodium Hydrogen ◽  
Hydrogen Carbonate ◽  
Carbon Catalysts

scholarly journals Pretreatment of Switchgrass for Production of Glucose via Sulfonic Acid-Impregnated Activated Carbon

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 504
Author(s):  
Yane Ansanay ◽  
Praveen Kolar ◽  
Ratna Sharma-Shivappa ◽  
Jay Cheng ◽  
Consuelo Arellano
Keyword(s):  
Activated Carbon ◽  
Sulfonic Acid ◽  
Solid Acid ◽  
Methanesulfonic Acid ◽  
Biofuel Production ◽  
Acid Catalysts ◽  
Effects Of Temperature ◽  
Carbon Catalysts ◽  
Hydrolysis Of

In the present research, activated carbon-supported sulfonic acid catalysts were synthesized and tested as pretreatment agents for the conversion of switchgrass into glucose. The catalysts were synthesized by reacting sulfuric acid, methanesulfonic acid, and p-toluenesulfonic acid with activated carbon. The characterization of catalysts suggested an increase in surface acidities, while surface area and pore volumes decreased because of sulfonation. Batch experiments were performed in 125 mL serum bottles to investigate the effects of temperature (30, 60, and 90 °C), reaction time (90 and 120 min) on the yields of glucose. Enzymatic hydrolysis of pretreated switchgrass using Ctec2 yielded up to 57.13% glucose. Durability tests indicated that sulfonic solid-impregnated carbon catalysts were able to maintain activity even after three cycles. From the results obtained, the solid acid catalysts appear to serve as effective pretreatment agents and can potentially reduce the use of conventional liquid acids and bases in biomass-into-biofuel production.

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.

Aqueous phase hydrogenation of substituted phenyls over carbon nanofibre and activated carbon supported Pd

2010 ◽  
Vol 270 (1) ◽  
pp. 9-15 ◽  
Author(s):  
J.A. Anderson ◽  
A. Athawale ◽  
F.E. Imrie ◽  
F.-M. MKenna ◽  
A. MCue ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Phase ◽  
Carbon Nanofibre ◽  
Supported Pd

scholarly journals Mechanisms of distinct activated carbon and biochar amendment effects on petroleum vapour biofiltration in soil

2017 ◽  
Vol 19 (10) ◽  
pp. 1260-1269 ◽  
Author(s):  
Khaled M. Bushnaf ◽  
George Mangse ◽  
Paola Meynet ◽  
Russell J. Davenport ◽  
Olaf A. Cirpka ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Phase ◽  
Soil P ◽  
Phase Liquid ◽  
Biochar Amendment

We studied the effects of two percent by weight activated carbonversusbiochar amendments in 93 cm long sand columns on the biofiltration of petroleum vapours released by a non-aqueous phase liquid (NAPL) source.

Direct synthesis of phenol from benzene on iron-impregnated activated carbon catalysts

2005 ◽  
Vol 290 (1-2) ◽  
pp. 1-8 ◽  
Author(s):  
J CHOI ◽  
T KIM ◽  
K CHOO ◽  
J SUNG ◽  
M SAIDUTTA ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Direct Synthesis ◽  
Carbon Catalysts
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