scholarly journals Predictable and targeted activation of biomass to carbons with high surface area density and enhanced methane storage capacity

2020 ◽  
Vol 13 (9) ◽  
pp. 2967-2978 ◽  
Author(s):  
Afnan Altwala ◽  
Robert Mokaya
Keyword(s):  
Surface Area ◽  
Packing Density ◽  
Storage Capacity ◽  
Activated Carbons ◽  
High Surface ◽  
High Surface Area ◽  
Atomic Ratio ◽  
Methane Storage ◽  
Carbonaceous Matter ◽  
Area Density

The O/C atomic ratio of biomass-derived carbonaceous matter is a universal predictor of porosity and packing density, and enables predictable synthesis of activated carbons that have high methane storage of 222 cm3 (STP) cm−3 at 25 oC and 35 bar.

scholarly journals Correction: Cigarette butt-derived carbons have ultra-high surface area and unprecedented hydrogen storage capacity

2021 ◽  
Author(s):  
L. Scott Blankenship
Keyword(s):  
Hydrogen Storage ◽  
Surface Area ◽  
Storage Capacity ◽  
High Surface ◽  
High Surface Area ◽  
Hydrogen Storage Capacity ◽  
Cigarette Butt ◽  
Energy Environ

Correction for ‘Cigarette butt-derived carbons have ultra-high surface area and unprecedented hydrogen storage capacity’ by L. Scott Blankenship et al., Energy Environ. Sci., 2017, 10, 2552–2562, DOI: 10.1039/C7EE02616A.

scholarly journals Hydrogen uptake of high surface area-activated carbons doped with nitrogen

2013 ◽  
Vol 38 (25) ◽  
pp. 10453-10460 ◽  
Author(s):  
W. Zhao ◽  
V. Fierro ◽  
N. Fernández-Huerta ◽  
M.T. Izquierdo ◽  
A. Celzard
Keyword(s):  
Surface Area ◽  
Activated Carbons ◽  
High Surface ◽  
High Surface Area ◽  
Hydrogen Uptake

scholarly journals The Effects of Methane Storage Capacity Using Upgraded Activated Carbon by KOH

2018 ◽  
Vol 8 (9) ◽  
pp. 1596 ◽  
Author(s):  
Jung Park ◽  
Gi Lee ◽  
Sang Hwang ◽  
Ji Kim ◽  
Bum Hong ◽  
...  
Keyword(s):  
Surface Area ◽  
Storage Capacity ◽  
Activated Carbons ◽  
Chemical Activation ◽  
High Surface ◽  
Heat Of Adsorption ◽  
Low Grade ◽  
Surface Areas ◽  
Ch4 Adsorption ◽  
Ch4 Storage

In this study, a feasible experiment on adsorbed natural gas (ANG) was performed using activated carbons (ACs) with high surface areas. Upgraded ACs were prepared using chemical activation with potassium hydroxide, and were then applied as adsorbents for methane (CH4) storage. This study had three principal objectives: (i) upgrade ACs with high surface areas; (ii) evaluate the factors regulating CH4 adsorption capacity; and (iii) assess discharge conditions for the delivery of CH4. The results showed that upgraded ACs with surface areas of 3052 m2/g had the highest CH4 storage capacity (0.32 g-CH4/g-ACs at 3.5 MPa), which was over two times higher than the surface area and storage capacity of low-grade ACs (surface area = 1152 m2/g, 0.10 g-CH4/g-ACs). Among the factors such as surface area, packing density, and heat of adsorption in the ANG system, the heat of adsorption played an important role in controlling CH4 adsorption. The released heat also affected the CH4 storage and enhanced available applications. During the discharge of gas from the ANG system, the residual amount of CH4 increased as the temperature decreased. The amount of delivered gas was confirmed using different evacuation flow rates at 0.4 MPa, and the highest efficiency of delivery was 98% at 0.1 L/min. The results of this research strongly suggested that the heat of adsorption should be controlled by both recharging and discharging processes to prevent rapid temperature change in the adsorbent bed.

scholarly journals Preparation and characterization of activated carbons from albizia saman pod

2017 ◽  
Vol 36 (3) ◽  
pp. 44-53
Author(s):  
G. D. Akpen ◽  
M. I. Aho ◽  
N. Baba
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Activated Carbons ◽  
High Surface ◽  
High Surface Area ◽  
Volatile Matter ◽  
Sieve Analysis ◽  
Albizia Saman ◽  
Temperature Surface

Activated carbon was prepared from the pods of Albizia saman for the purpose of converting the waste to wealth. The pods were thoroughly washed with water to remove any dirt, air- dried and cut into sizes of 2-4 cm. The prepared pods were then carbonised in a muffle furnace at temperatures of 4000C, 5000C, 6000C ,7000C and 8000C for 30 minutes. The same procedure was repeated for 60, 90, 120 and 150 minutes respectively. Activation was done using impregnationratios of 1:12, 1:6, 1:4, 1:3, and 1:2 respectively of ZnCl2 to carbonised Albizia saman pods by weight. The activated carbon was then dried in an oven at 1050C before crushing for sieve analysis. The following properties of the produced Albizia saman pod activated carbon (ASPAC) were determined: bulk density, carbon yield, surface area and ash, volatile matter and moisture contents. The highest surface area of 1479.29 m2/g was obtained at the optimum impregnation ratio, carbonization time and temperature of 1:6, 60 minutes and 5000C respectively. It was recommended that activated carbon should be prepared from Albizia saman pod with high potential for adsorption of pollutants given the high surface area obtained.Keywords: Albizia saman pod, activated carbon, carbonization, temperature, surface area

Preparation of activated carbon with high surface area for high-capacity methane storage

2014 ◽  
Vol 23 (5) ◽  
pp. 662-668 ◽  
Author(s):  
Bingsi Liu ◽  
Wenshuo Wang ◽  
Na Wang ◽  
(Peter) Chak Tong Au
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
High Capacity ◽  
Methane Storage

Electrochemical performance of high surface area activated carbons derived from coal tar pitch

Carbon ◽  
2019 ◽  
Vol 145 ◽  
pp. 773 ◽  
Author(s):  
Kai Wang ◽  
Chao Gao ◽  
Song-en Li ◽  
Jin-yu Wang ◽  
Xiao-dong Tian ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Surface Area ◽  
Activated Carbons ◽  
High Surface ◽  
Coal Tar ◽  
High Surface Area ◽  
Coal Tar Pitch

Investigation of Polyaniline Nanocomposites and Cross-Linked Polyaniline for Hydrogen Storage

2012 ◽  
Vol 445 ◽  
pp. 571-576 ◽  
Author(s):  
Dervis E. Demirocak ◽  
Sarada Kuravi ◽  
Manoj K. Ram ◽  
Chand K. Jotshi ◽  
Sesha Srinivasan ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Surface Area ◽  
Storage Capacity ◽  
Storage System ◽  
High Surface ◽  
High Surface Area ◽  
Hydrogen Sorption ◽  
Commercial Application ◽  
Storage Mechanism ◽  
Hydrogen Storage System

One of the biggest challenges for the commercial application of existing hydrogen storage materials is to meet the desired high volumetric and gravimetric hydrogen storage capacity and the ability to refuel quickly and repetitively as a safe transportation system at moderate temperature and pressure. In this work, we have synthesized polyaniline nanocomposites (PANI-NC) and hypercrosslinked polyaniline (PANI-HYP) materials to provide structure and composition which could meet the specific demands of a practical hydrogen storage system. Hydrogen sorption measurements showed that high surface area porous structure enhanced the storage capacity significantly at 77.3K and 1atm (i.e., 0.8wt% for PANI-HYP). However at 298K, storage capacity of all samples is less than 0.5wt% at 70 bar. Hydrogen sorption results along with the surface area measurements confirmed that hydrogen storage mechanism predominantly based on physisorption for polyaniline.

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