Improvement of activity and sulphur resistance of Pd complex catalysts using carbon-coated γ-Al2O3 and activated carbon supports

Due to their weak polarity and large surface area, activated carbon supports have the potential to enhance the dispersion of metal-sulfides. It is expected that the absence of a strong metal-support interaction can result in the formation of a very active and stable Ni-Mo-S phase. In this study, catalysts with different amounts of nickel and molybdenum supported on a commercial activated carbon were prepared by a co-impregnation method and characterized by BET, XRF, and SEM techniques. The catalytic activity for hydroprocessing of Jatropha oil was evaluated in a batch reactor, and the composition of the liquid and gaseous products were determined. Results showed that gaseous products are mainly composed of high amounts of propane and small amounts of other light hydrocarbons (C1 to C5). Liquid hydrocarbon products consisted of a mixture containing mainly n-paraffins of C15-C18 and some oxygenated compounds. The catalysts with a mass fraction<br />of 3 % Ni, 15 % Mo (Ni3Mo15/AC) presented the highest selectivity toward C17-C18 hydrocarbons, with a product distribution similar to a commercial<br />alumina-supported Ni-Mo-S catalyst.

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Adsorptive Removal of Methylene Blue Using Groundnut Shell Activated Carbon Coated With Fe2O3

IOSR Journal of Applied Chemistry ◽

10.9790/5736-1004012225 ◽

2017 ◽

Vol 10 (04) ◽

pp. 12-21

Author(s):

S.S. Imam ◽

M. Abdullahi

Keyword(s):

Methylene Blue ◽

Activated Carbon ◽

Adsorptive Removal ◽

Carbon Coated ◽

Groundnut Shell

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Pilot-scale comparison of non-coated and activated carbon-coated cosmoball for removal of organic matter and nutrients from municipal wastewater

10.5004/dwt.2021.27408 ◽

2021 ◽

Vol 230 ◽

pp. 155-168

Author(s):

Khaled Shahot ◽

Azni Idris ◽

Rozita Omar

Keyword(s):

Organic Matter ◽

Activated Carbon ◽

Municipal Wastewater ◽

Pilot Scale ◽

Carbon Coated

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Thermal Modification Effect on Supported Cu-Based Activated Carbon Catalyst in Hydrogenolysis of Glycerol

Materials ◽

10.3390/ma13030603 ◽

2020 ◽

Vol 13 (3) ◽

pp. 603 ◽

Cited By ~ 1

Author(s):

Juan Seguel ◽

Rafael García ◽

Ricardo José Chimentão ◽

José Luis García-Fierro ◽

I. Tyrone Ghampson ◽

...

Keyword(s):

Activated Carbon ◽

Specific Surface ◽

Hydrogen Adsorption ◽

Carbon Support ◽

Catalytic Performance ◽

Homogeneous Distribution ◽

Surface Groups ◽

Carbon Supports ◽

Surface Areas ◽

Oxygen Surface

Glycerol hydrogenolysis to 1,2-propanediol (1,2-PDO) was performed over activated carbon supported copper-based catalysts. The catalysts were prepared by impregnation using a pristine carbon support and thermally-treated carbon supports (450, 600, 750, and 1000 °C). The final hydrogen adsorption capacity, porous structure, and total acidity of the catalysts were found to be important descriptors to understand catalytic performance. Oxygen surface groups on the support controlled copper dispersion by modifying acidic and adsorption properties. The amount of oxygen species of thermally modified carbon supports was also found to be a function of its specific surface area. Carbon supports with high specific surface areas contained large amount of oxygen surface species, inducing homogeneous distribution of Cu species on the carbon support during impregnation. The oxygen surface groups likely acted as anchorage centers, whereby the more stable oxygen surface groups after the reduction treatment produced an increase in the interaction of the copper species with the carbon support, and determined catalytic performances.

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