Immobilization of enzymes on activated carbon: Selection and preparation of the carbon support

1979 ◽  
Vol 21 (3) ◽  
pp. 461-476 ◽  
Author(s):  
Y. K. Cho ◽  
J. E. Bailey
Keyword(s):  
Activated Carbon ◽  
Carbon Support ◽  
Immobilization Of Enzymes

Effect of activated carbon support on CS2 removal over coupling catalysts

2011 ◽  
Vol 20 (4) ◽  
pp. 397-402 ◽  
Author(s):  
Li Wang ◽  
Yun Guo ◽  
Guanzhong Lu
Keyword(s):  
Activated Carbon ◽  
Carbon Support

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

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 603 ◽  
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.

Low temperature steam reforming of ethanol over advanced carbon nanotube-based catalysts

2015 ◽  
Vol 4 (5) ◽  
Author(s):  
Prem Kumar Seelam ◽  
Anne-Riikka Rautio ◽  
Mika Huuhtanen ◽  
Krisztian Kordas ◽  
Riitta L. Keiski
Keyword(s):  
Activated Carbon ◽  
Carbon Nanotube ◽  
Low Temperature ◽  
Hydrogen Production ◽  
Carbon Black ◽  
Steam Reforming ◽  
Production Capacity ◽  
Carbon Support ◽  
Hydrogen Economy ◽  
Steam Reforming Of Ethanol

AbstractSteam reforming of biofuels such as bioethanol offers a clean and sustainable route to improve hydrogen production capacity for the hydrogen economy. In this work, the influence of the carbon support type (carbon nanotube [CNT], activated carbon [AC] and graphitic carbon black [GCB]) and the addition of Pt (1 wt.%, 1.5 wt.% and 2 wt.%) and ZnO (10 wt.%) to Ni

Continuous catalytic upgrading of ethanol to n-butanol over Cu–CeO2/AC catalysts

2016 ◽  
Vol 52 (95) ◽  
pp. 13749-13752 ◽  
Author(s):  
Dahao Jiang ◽  
Xianyuan Wu ◽  
Jun Mao ◽  
Jun Ni ◽  
Xiaonian Li
Keyword(s):  
Activated Carbon ◽  
Fixed Bed ◽  
Carbon Support ◽  
Reaction Conditions ◽  
Catalytic Upgrading ◽  
Fixed Bed Reactors

Cu–CeO2/AC catalysts exhibited the highest n-butanol yields (21.6% and nearly 20%) under mild reaction conditions in batch and fixed-bed reactors, respectively, which could be ascribed to the synergy of Cu, CeO2 and the activated carbon support.

Improved Photocatalytic Activity of Copper Heterostructure Composites (Cu–Cu2O–CuO/AC) Prepared by Simple Carbothermal Reduction

2014 ◽  
Vol 67 (5) ◽  
pp. 749 ◽  
Author(s):  
Hongchao Ma ◽  
Yifeng Liu ◽  
Yinghuan Fu ◽  
Chunling Yu ◽  
Xiaoli Dong ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Photocatalytic Activity ◽  
Activated Carbon ◽  
Visible Light ◽  
Photoelectron Spectroscopy ◽  
Carbothermal Reduction ◽  
Treatment Time ◽  
Carbon Support ◽  
Treatment Temperature ◽  
X Ray

Cu–Cu2O–CuO/activated carbon heterostructure composites with visible-light activity have been successfully synthesized by a simple carbothermal reduction procedure using CuSO4 as a single precursor. The resultant samples were characterized by X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy measurements. The results showed that the Cu–Cu2O–CuO composites with size less than 10 nm dispersed well on the surface of activated carbon. Activated carbon played both a reducing agent and support role in the formation of Cu–Cu2O–CuO/activated carbon heterostructure composites. X-ray photoelectron spectroscopy analysis suggests that the outside of the nanoparticles is CuO and the inside of the nanoparticles is Cu metal and Cu2O. Moreover, the composition of Cu–Cu2O–CuO/activated carbon composites can be tailored by varying the Cu loading, heat-treatment temperature, and heat-treatment time. The photocatalytic activities of the catalysts were investigated by degrading reactive brilliant blue KN-R under visible-light irradiation. The Cu–Cu2O–CuO/activated carbon heterostructure composites showed excellent photocatalytic activity compared with other catalysts (pure CuO, Cu2O, Cu2O/activated carbon, CuO/activated carbon, and Cu2O–CuO/activated carbon), which is ascribed to synergistic action between the activated carbon support and photoactive copper species, and the presence of interfacial structures such as a Cu2O/CuO heterostructure, Cu/Cu2O (or CuO) Schottky barrier, and Cu2O/Cu/CuO ohmic heterojunction.

Recycling rice straw derived, activated carbon supported, nanoscaled Fe3O4 as a highly efficient catalyst for Fenton oxidation of real coal gasification wastewater

RSC Advances ◽  
2016 ◽  
Vol 6 (97) ◽  
pp. 95129-95136 ◽  
Author(s):  
Haifeng Zhuang ◽  
Xiaoting Hong ◽  
Shengdao Shan ◽  
Xiaoli Yuan
Keyword(s):  
Activated Carbon ◽  
Rice Straw ◽  
Coal Gasification ◽  
Carbon Support ◽  
Fenton Oxidation ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Coal Gasification Wastewater

Recycled rice straw was converted into an activated carbon support for nanoscaled Fe3O4.

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