Mechanistic study of the selective hydrogenolysis of CCI2
F2
 (CFC-12) into CH2
F2
 (HFC-32) over palladium on activated carbon

Activated carbon was prepared from molasses, which are natural precursors of vegetable origin resulting from the sugar industry. A simple elaboration process, based on chemical activation with phosphoric acid, was proposed. The final product, prepared by activation of molasses/phosphoric acid mixture in air at 500°C, presented high surface area (more than 1400 m2/g) and important maximum adsorption capacity for methylene blue (625 mg/g) and iodine (1660 mg/g). The activated carbon (MP2(500)) showed a good potential for the adsorption of Cr(VI), Cu(II) and Pb(II) from aqueous solutions. The affinity for the three ions was observed in the following order Cu2+ Cr6+ Pb2+. The process is governed by monolayer adsorption following the Langmuir model, with a correlation coefficient close to unity.

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Selective hydrogenolysis of CCl2F2 into CH2F2 over palladium on activated carbon

Catalysis Today ◽

10.1016/s0920-5861(00)00288-1 ◽

2000 ◽

Vol 59 (3-4) ◽

pp. 221-230 ◽

Cited By ~ 14

Author(s):

J.A Moulijn ◽

M Makkee ◽

A Wiersma ◽

E.J.A.X van de Sandt

Keyword(s):

Activated Carbon ◽

Selective Hydrogenolysis

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03/02009 Mechanistic study on adsorption and reduction of NO2 over activated carbon fibers

Fuel and Energy Abstracts ◽

10.1016/s0140-6701(03)92125-4 ◽

2003 ◽

Vol 44 (5) ◽

pp. 334

Keyword(s):

Activated Carbon ◽

Carbon Fibers ◽

Mechanistic Study ◽

Activated Carbon Fibers

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Mechanistic Study on Adsorption and Oxidation of NO over Activated Carbon

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.941-944.939 ◽

2014 ◽

Vol 941-944 ◽

pp. 939-944

Author(s):

Bing Li ◽

Jian Ming Xue ◽

Chun Yuan Ma ◽

Jian Min Chen

Keyword(s):

Fourier Transform ◽

Activated Carbon ◽

Infrared Spectroscopy ◽

Conversion Rate ◽

Active Sites ◽

No Oxidation ◽

Mechanistic Study ◽

No Adsorption ◽

Oxidation Of No ◽

Carbon Micropore

Themechanism of NO adsorption and oxidation over activated carbon at lowtemperature has been studied by NO adsorption and oxidation, NO2adsorption and Fourier transform infrared spectroscopy. The results show thatwhen oxygen is present, activated carbon catalyses NO oxidation into NO2and a stable NO conversion rate is achieved. NO is adsorbed in the form of (NO)2due to the confinement effects of the activated carbon micropore. (NO)2is oxidized into NO2 by oxygen. The disproportionation of NO2gives NO and NO3, that causes the peak of the maximum NOconcentration. When the active sites are saturated by NO3, NO2adsorption and disproportionation gradually diminish, that results in NO2breakthrough and increases the concentration of NO2 to thestationary one. At the same time, the concentration of NO gradually decreasesto the stationary one after the maximum.

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