scholarly journals Synthesis of sulfur-doped porous carbon from heavy coker gas oil and its application in CO2 capture

2021 ◽  
Author(s):  
Yi Du ◽  
Bradley Wooler ◽  
Stuart E. Smith ◽  
Brenda Raich ◽  
Clarence E. Chase ◽  
...  
Keyword(s):  
Surface Area ◽  
Hydrogen Content ◽  
Co2 Capture ◽  
Porous Carbon ◽  
Elemental Sulfur ◽  
Bet Surface Area ◽  
Gas Oil ◽  
Cross Link ◽  
Coker Gas Oil

Elemental sulfur is used to cross-link heavy coker gas oil (HKGO) with only 0.44 wt% olefinic hydrogen content in the absence of solvent; subsequent pyrolysis yields sulfur-doped porous carbon with Brunauer–Emmett–Tell (BET) surface area (s.a.) around 1714–1785 m2 g−1.

A facile approach for the synthesis of hydroxyl-rich microporous organic networks for efficient CO2 capture and H2 storage

2017 ◽  
Vol 53 (18) ◽  
pp. 2752-2755 ◽  
Author(s):  
Sujan Mondal ◽  
Sudipta K. Kundu ◽  
Asim Bhaumik
Keyword(s):  
Surface Area ◽  
Co2 Capture ◽  
High Vacuum ◽  
Bet Surface Area ◽  
Hydroxyl Groups ◽  
Free Hydroxyl ◽  
Organic Networks

A new series of porous organic networks (PONs) with N-donor sites and free hydroxyl groups in the backbone have been synthesized under high vacuum sealed tube conditions. These PONs possess high BET surface area and showed excellent H2 and CO2 storage capacities.

Synthesis and Characterization of Green Porous Carbons with Large Surface Area by Two Step Chemical Activation with KOH

2014 ◽  
Vol 67 (4) ◽  
Author(s):  
Noor Shawal Nasri ◽  
Mohammed Jibril ◽  
Muhammad Abbas Ahmad Zaini ◽  
Rahmat Mohsin ◽  
Hamza Usman Dadum ◽  
...  
Keyword(s):  
Surface Area ◽  
Porous Carbon ◽  
Pore Volume ◽  
Potassium Hydroxide ◽  
Chemical Activation ◽  
Bet Surface Area ◽  
Porous Carbons ◽  
Precursor Material ◽  
Proximate And Ultimate Analysis

Porous carbons were synthesized from coconut shell using chemical activation by potassium hydroxide (KOH). N2 adsorption isotherm analysis for BET surface area and pore volume of the synthesized porous carbon were carried out. The Langmuir surface area, BET surface area and pore volume are 1646 m2/g, 1353 m2/g and 0.6 cm3/g, respectively. From the FTIR analysis, hydroxyls, alkenes, carbonyls and aromatics functional groups were identified. The proximate and ultimate analysis shows high percentage of carbon and less ash content which indicates a good precursor material for porous carbon. The carbonization temperature and time were also varied to observe their effect on the yield of char, with carbonization at 7000C for 2 h having highest yield of 32%.

Studies on the Catalytic Cracking of Different Gas Oils for Maximizing Propylene

2012 ◽  
Vol 524-527 ◽  
pp. 1889-1894 ◽  
Author(s):  
Xiao Bo Chen ◽  
Ben Xian Shen ◽  
Chun Yi Li ◽  
Hong Hong Shan ◽  
Dong Zhang ◽  
...  
Keyword(s):  
Hydrogen Content ◽  
Catalytic Cracking ◽  
Pilot Scale ◽  
Acid Sites ◽  
Fluid Catalytic Cracking ◽  
Zeolitic Catalyst ◽  
Vacuum Gas Oil ◽  
Gas Oil ◽  
Coker Gas Oil ◽  
Propylene Yield

The effects of feedstock’s properties on the propylene yield of catalytic cracking were investigated in a fluid catalytic cracking (FCC) pilot scale riser test unit operating with a circulating catalyst. Under simulated conditions, the results of catalytic cracking with four different gas oils (including two kinds of vacuum gas oil (VGO) and two kinds of coker gas oil (CGO)) show that the yield of propylene is increasing with the ascending hydrogen content of feed. When the hydrogen content is almost the same, propylene yield fed with paraffinic-base VGO is higher than that fed with intermediate-base or naphthenic-base VGO. The lowest yield is fed with CGO because of the more nitrogen compounds, which can poison the acid sites of the zeolitic catalyst.

An Investigation into the Optimum Carbonization Conditions for the Production of Porous Carbon from a Solid Waste

2012 ◽  
Vol 587 ◽  
pp. 88-92 ◽  
Author(s):  
Sara Kazemi Yazdi ◽  
Salman Masoudi Soltani ◽  
Soraya Hosseini
Keyword(s):  
Heating Rate ◽  
Surface Area ◽  
Porous Carbon ◽  
Hold Time ◽  
Bet Surface Area ◽  
Cellulose Derivatives ◽  
Gravimetric Analysis ◽  
Operational Parameters ◽  
One Step ◽  
Adsorption Desorption

Cellulosic materials and cellulose derivatives have been long used in the synthesis of numerous materials. These include various products such as papers, cigarette filters and sanitary pads. Cigarette filters, containing 95% cellulose acetate fibers, are responsible for one of the largest solid wastes generation today. In this work, a simple one-step carbonization of cigarette filters under various operational parameters is used in order to produce porous carbon. The effects of various pyrolysis parameters including carbonization temperature, heating rate and hold time on the final porous carbon product have been investigated. Adsorption-desorption isotherms, scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX) as well as thermal gravimetric analysis (TGA) have been employed to characterize the pyrolyzed product. The optimum conditions for the production of porous carbon from cigarette filters in relation to its maximum specific surface area (637 m2/g BET surface area) is understood to be at a heating rate of 5 °C/min at 900 °C for 1 hour.

Synthesis and Characterization of Low-Cost Porous Carbon from Palm Oil Shell via K2CO3 Chemical Activation Process

2015 ◽  
Vol 735 ◽  
pp. 36-40 ◽  
Author(s):  
Noor Shawal Nasri ◽  
Hatijah Basri ◽  
Abdurrahman Garba ◽  
Usman Dadum Hamza ◽  
Jibril Mohammed ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Palm Oil ◽  
Porous Carbon ◽  
Organic Contaminants ◽  
Agricultural Waste ◽  
Chemical Activation ◽  
Value Added ◽  
Bet Surface Area ◽  
Activation Process

The abundant fraction of agricultural waste materials in the environment that poses disposal challenge could be converted into useful value added products such as activated carbon. Palm oil shell based carbon was prepared by two step process using K2CO3 as the chemical activant. The Langmuir surface area, BET surface area and pore volume were 817 m2/g, 707m2/g and 0.31cm3/g. From the FTIR analysis, carbonyls, alkenes and hydroxyls were identified. The SEM image shows gradual formation of pores due to elimination of volatiles and contaminants. Carbonization at 800°C for 2 hours and activation at same temperature for 1h has the highest yield of 23.27%. The proximate and ultimate analysis shows high percentage of carbon and low percentage of ash which is an indication of a good material for production of porous carbon. The activated carbon produced showed basic properties suitable for removal of organic contaminants in aqueous solutions. However, the aim of this study is to produce a green and porous carbon with controlled pores and surface properties for organic contaminants removal from water and wastewater.

scholarly journals Template-Free Synthesis of Porous Carbon from Merbau Wood by H2O2-ZnCl2 Hydrothermal Treatment

2020 ◽  
Vol 32 (4) ◽  
pp. 810-814
Author(s):  
Darma Santi ◽  
Triyono ◽  
Wega Trisunaryanti ◽  
Iip Izul Falah
Keyword(s):  
Surface Area ◽  
Hydrothermal Treatment ◽  
Porous Carbon ◽  
Bet Surface Area ◽  
Total Acid ◽  
Sem Image ◽  
Vapour Adsorption ◽  
Carboxylic Groups ◽  
Adsorption Surface ◽  
Ft Ir

Zinc(II) chloride, as an activating agent and H2O2 as an oxidizing agent, prepared the hydrothermal treatment synthesis of porous carbon (HC). The hydrothermal followed by carbonization and then by oxidation at 350 °C under oxygen stream (HC-Ox). All the products characterized by XRD, FT-IR, amount of oxygenated functional groups (OFGs) obtained by the Boehm method, the total acid amount by NH3 base vapour adsorption, surface area analyzer (SAA) and SEM. The XRD results showed that all of the carbonized samples were amorphous, which characteristic for porous carbonized. The results of FT-IR and Boehm titration revealed that the phenolic group was the highest contributor to OFGs on HC-Ox samples (7.095 meq/g) and carboxylic groups of 2.685 meq/g. The maximum BET surface area was found to be 443.5 (m2/g) for C-Ox and 232.2 (m2/g) for HC-Ox. The SEM image displayed that the morphology of the HC samples was a stacking honeycomb-like structure.

BET surface area of carbonaceous adsorbents—Verification using geometric considerations and GCMC simulations on virtual porous carbon models

2010 ◽  
Vol 256 (17) ◽  
pp. 5204-5209 ◽  
Author(s):  
Piotr A. Gauden ◽  
Artur P. Terzyk ◽  
Sylwester Furmaniak ◽  
Peter J.F. Harris ◽  
Piotr Kowalczyk
Keyword(s):  
Surface Area ◽  
Porous Carbon ◽  
Bet Surface Area ◽  
Carbonaceous Adsorbents ◽  
Gcmc Simulations

Controlling the BET Surface Area of Porous Carbon by Using the Cd/C Ratio of a Cd-MOF Precursor and Enhancing the Capacitance by Activation with KOH

2016 ◽  
Vol 22 (49) ◽  
pp. 17734-17747 ◽  
Author(s):  
Zuo-Xi Li ◽  
Xue Zhang ◽  
Yi-Chen Liu ◽  
Kang-Yu Zou ◽  
Man-Li Yue
Keyword(s):  
Surface Area ◽  
Porous Carbon ◽  
Bet Surface Area

Effect of Sulfur Compound Addition on Hydrodesulfurization of Coker Gas Oil

2006 ◽  
Vol 49 (1) ◽  
pp. 022-027
Author(s):  
Takeshige Takahashi ◽  
Yoshiko Harada ◽  
Masaru Ueki ◽  
Takami Kai
Keyword(s):  
Sulfur Compound ◽  
Gas Oil ◽  
Coker Gas Oil
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