Catalytic activity of pitch-based activated carbon fiber of large surface area heat-treated at high temperature and its regeneration for NO–NH3 reaction at ambient temperatures

Fuel ◽  
2001 ◽  
Vol 80 (15) ◽  
pp. 2227-2233 ◽  
Author(s):  
Isao Mochida ◽  
Shizuo Kawano ◽  
Noriaki Shirahama ◽  
Takashi Enjoji ◽  
Seung Hyun Moon ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Activated Carbon ◽  
High Temperature ◽  
Carbon Fiber ◽  
Surface Area ◽  
Activated Carbon Fiber ◽  
Large Surface Area ◽  
Ambient Temperatures ◽  
Heat Treated

NO oxidation over activated carbon fiber (ACF). Part 1. Extended kinetics over a pitch based ACF of very large surface area

Fuel ◽  
2000 ◽  
Vol 79 (14) ◽  
pp. 1713-1723 ◽  
Author(s):  
I Mochida ◽  
N Shirahama ◽  
S Kawano ◽  
Y Korai ◽  
A Yasutake ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Surface Area ◽  
Activated Carbon Fiber ◽  
Large Surface Area ◽  
No Oxidation

scholarly journals Massaranduba Sawdust: A Potential Source of Charcoal and Activated Carbon

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1276 ◽  
Author(s):  
Castro ◽  
Nobre ◽  
Napoli ◽  
Bianchi ◽  
Moulin ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Value Added ◽  
High Reactivity ◽  
Large Surface Area ◽  
Scanning Calorimetry ◽  
Co2 Gas ◽  
Heat Treated ◽  
Amorphous Structures ◽  
Adsorption Desorption

This paper provides proof of concept that activated carbon (AC) may be readily produced using limited conversion methods and resources from sawdust of massaranduba (Manilkara huberi) wood, thereby obtaining value-added products. Sawdust was sieved and heat-treated in an oxygen-free muffle furnace at 500 °C to produce charcoal. The charcoal was activated in a tubular electric furnace at 850 °C while being purged with CO2 gas. Microstructural, thermal and physical properties of the three components: sawdust, charcoal and AC were compared by means of field emission scanning electron microscopy (FESEM), X-ray diffractometry (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), density and water adsorption/desorption measurements. The resulting AC had a large surface area as measured by Brunauer-Emmett-Teller (BET) comparable to other such values found in the literature. The large surface area was due to pore development at the microstructural level as shown by FESEM. XRD illustrated that sawdust had a semi-crystalline structure whereas charcoal and AC evidenced mostly amorphous structures. TGA and DSC showed that AC had high reactivity to moisture compared to sawdust and charcoal.

Effect of ACF Properties on the Electric Adsorption Performance of the ACF Electrode

2012 ◽  
Vol 209-211 ◽  
pp. 1990-1994 ◽  
Author(s):  
Qin Zhang ◽  
Zhao Hui Zhang ◽  
Liang Wang ◽  
Zi Long Zhang ◽  
Xing Fei Guo
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Activated Carbon Fiber ◽  
Adsorption Performance ◽  
Carbon Fiber Cloth ◽  
Activated Carbon Fiber Cloth ◽  
The Relationship

The properties of four different activated carbon fiber cloth (ACF), such as specific surface area, pore volumes and pore size distribution, were evaluated. The relationship between ACF properties and its electrosorption performance was analyzed. The experimental results show that pore structure has more influence on the performance of ACF electrode than that of specific surface area for ACF material. More abundant mesopores and shallower pore channels for ACF is favorable to improve the specific capacitance and electrosorption capacity of ions.

Preparation and Characterization of Activated Carbon Fiber Supported Nano-TiO2

2012 ◽  
Vol 503-504 ◽  
pp. 646-649
Author(s):  
Xiao Ling Guo ◽  
Xiang Dong Wang ◽  
De Ping Ben
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Surface Area ◽  
Anatase Phase ◽  
Sol Gel ◽  
Activated Carbon Fiber ◽  
Bet Surface Area ◽  
Tetrabutyl Titanate ◽  
Nano Tio2 ◽  
Mean Size

Nano-TiO2 powders were synthesized by a sol-gel method using tetrabutyl titanate as the precursor, and then the composites of ACF(activated carbon fiber) supported nano-TiO2 was prepared by impregnating method. Tests of the amount of loaded TiO2 showed that three impregnating times was adequate. The Nano-TiO2 powders and composites were characterized by XRD, SEM, and BET surface area method. XRD tests showed that nano-TiO2 powders prepared by this way are anatase phase, and the mean size of the particles is about 11.5nm, when the calcination temperature is 673K. BET results showed that compared with original ACF, the surface area of the composites decreased slightly, indicating the impregnating process did not change the porous structure of original ACF. SEM result indicated that most of the nano-TiO2 particles as the size of 10-20nm were homogeneously dispersed on the surface of ACF.

scholarly journals Removal Characteristics of Toxic Gas on Activated Carbon Fiber Based Paper Filter

2020 ◽  
Vol 42 (6) ◽  
pp. 289-297
Author(s):  
Eunbyul Lee ◽  
Jonggu Kim ◽  
Byungtae Yoo
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Specific Surface ◽  
Surface Area ◽  
Removal Efficiency ◽  
Specific Surface Area ◽  
Activated Carbon Fiber ◽  
Gas Removal ◽  
Paper Filter ◽  
Toxic Gas

Objectives:A paper filter was prepared by pitch based activated carbon fibers to investigate the removal efficiency of toxic gas. Also, changes in pore characteristics and mechanical properties according to the ratio of the adsorbent and the binder were observed to optimize the decrease in specific surface area and micropore, which are the unique characteristics of activated carbon fibers. In addition, it is intended to establish optimized paper filter derived activated carbon fiber manufacturing conditions through evaluation of toxic gas removal characteristics.Methods:The pore characteristics of the activated carbon fiber and prepared paper were analyzed by measuring the BET specific surface area, and SEM analysis was performed on the fine surface shape. Tensile strength and air permeability were performed according to ISO 1924-2 and ASTM D737: 04, respectively. The adsorption performance of the prepared filter was evaluated as a gas removal efficiency using a gas detection tube (GV-110S).Results and Discussion:As the content of the binder increased in the paper manufacturing process, it was confirmed that the specific surface area of ​​the prepared filter decreased by up to 39.5% compared to the activated carbon fiber. It is considered that the micropores were closed because the surface of the activated carbon fiber was coated with the excessive addition of the binder. The removal efficiency showed a removal rate of 90% of ammonia, and methyl mercaptan and hydrogen sulfide showed a removal rate of about 60%. This result might be due to the difference in the physical adsorption rate according to the vapor pressure of each material.Conclusions:An activated carbon fiber-based paper filter for removing of toxic gas was prepared. It was confirmed that the mixing ratio of the adsorbent and the binder was an important process parameter for determining moldability and adsorption performance. Finally, optimum condition was selected as weight ratio condition of 8:2.

Evenly Supported TiO2 on Activated Carbon Fiber and its Photocatalytic Degradation Property

2011 ◽  
Vol 239-242 ◽  
pp. 1637-1642
Author(s):  
Xue Wang ◽  
Qiu Fang Wu ◽  
Shao Feng Xuan
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Activated Carbon ◽  
Carbon Fiber ◽  
Ph Value ◽  
Sol Gel ◽  
Supported Catalyst ◽  
Activated Carbon Fiber ◽  
Adsorption Method ◽  
Methylene Blue Degradation

Activated carbon fiber (ACF) supported TiO2photocatalyst was prepared by sol-gel-adsorption method. The state of TiO2supported on the ACF was observed using a scanning electron microscope. Photo catalytic activity of the catalyst was evaluated by degradation of methylene blue in water, and the ways in which the efficiency of methylene blue degradation was influenced by TiO2load content and pH value were investigated. The supported catalyst shows cooperative effect of ACF adsorption and TiO2catalytic activity, and the catalytic activity of the supported catalyst was basically unchanged after using for four times.

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