Porous structure and surface chemistry of phosphoric acid activated carbon from corncob

2012 ◽  
Vol 261 ◽  
pp. 75-82 ◽  
Author(s):  
N.V. Sych ◽  
S.I. Trofymenko ◽  
O.I. Poddubnaya ◽  
M.M. Tsyba ◽  
V.I. Sapsay ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Surface Chemistry ◽  
Porous Structure

Ethanol removal using activated carbon: Effect of porous structure and surface chemistry

2009 ◽  
Vol 120 (1-2) ◽  
pp. 62-68 ◽  
Author(s):  
A. Silvestre-Albero ◽  
J. Silvestre-Albero ◽  
A. Sepúlveda-Escribano ◽  
F. Rodríguez-Reinoso
Keyword(s):  
Activated Carbon ◽  
Surface Chemistry ◽  
Porous Structure ◽  
Ethanol Removal

Porous Structure of Activated Carbon Prepared from Cherry Stones by Chemical Activation with Phosphoric Acid

2007 ◽  
Vol 21 (5) ◽  
pp. 2942-2949 ◽  
Author(s):  
M. Olivares-Marín ◽  
C. Fernández-González ◽  
A. Macías-García ◽  
V. Gómez-Serrano
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Porous Structure ◽  
Chemical Activation

Activated carbon from molasses efficiency for Cr(VI), Pb(II) and Cu(II) adsorption: A mechanistic study

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Sugar Industry ◽  
Chemical Activation ◽  
High Surface ◽  
High Surface Area ◽  
Mechanistic Study ◽  
Acid Mixture ◽  
Maximum Adsorption Capacity ◽  
Good Potential

Activated carbon was prepared from molasses, which are natural precursors of vegetable origin resulting from the sugar industry. A simple elaboration process, based on chemical activation with phosphoric acid, was proposed. The final product, prepared by activation of molasses/phosphoric acid mixture in air at 500°C, presented high surface area (more than 1400 m2/g) and important maximum adsorption capacity for methylene blue (625 mg/g) and iodine (1660 mg/g). The activated carbon (MP2(500)) showed a good potential for the adsorption of Cr(VI), Cu(II) and Pb(II) from aqueous solutions. The affinity for the three ions was observed in the following order Cu2+ Cr6+ Pb2+. The process is governed by monolayer adsorption following the Langmuir model, with a correlation coefficient close to unity.

scholarly journals Computer Analysis of the Effect of Activation Temperature on the Microporous Structure Development of Activated Carbon Derived from Common Polypody

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2951
Author(s):  
Mirosław Kwiatkowski ◽  
Jarosław Serafin ◽  
Andy M. Booth ◽  
Beata Michalkiewicz
Keyword(s):  
Activated Carbon ◽  
Porous Structure ◽  
Computer Analysis ◽  
Density Functional ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Geometrical Parameters ◽  
Activation Process ◽  
Microporous Structure ◽  
Activation Temperature

This paper presents the results of a computer analysis of the effect of activation process temperature on the development of the microporous structure of activated carbon derived from the leaves of common polypody (Polypodium vulgare) via chemical activation with phosphoric acid (H3PO4) at activation temperatures of 700, 800, and 900 °C. An unconventional approach to porous structure analysis, using the new numerical clustering-based adsorption analysis (LBET) method together with the implemented unique gas state equation, was used in this study. The LBET method is based on unique mathematical models that take into account, in addition to surface heterogeneity, the possibility of molecule clusters branching and the geometric and energy limitations of adsorbate cluster formation. It enabled us to determine a set of parameters comprehensively and reliably describing the porous structure of carbon material on the basis of the determined adsorption isotherm. Porous structure analyses using the LBET method were based on nitrogen (N2), carbon dioxide (CO2), and methane (CH4) adsorption isotherms determined for individual activated carbon. The analyses carried out showed the highest CO2 adsorption capacity for activated carbon obtained was at an activation temperature of 900 °C, a value only slightly higher than that obtained for activated carbon prepared at 700 °C, but the values of geometrical parameters determined for these activated carbons showed significant differences. The results of the analyses obtained with the LBET method were also compared with the results of iodine number analysis and the results obtained with the Brunauer–Emmett–Teller (BET), Dubinin–Radushkevich (DR), and quenched solid density functional theory (QSDFT) methods, demonstrating their complementarity.

Oxidation of Activated Carbon Fibers:  Effect on Pore Size, Surface Chemistry, and Adsorption Properties

1999 ◽  
Vol 11 (12) ◽  
pp. 3476-3483 ◽  
Author(s):  
Christian L. Mangun ◽  
Kelly R. Benak ◽  
Michael A. Daley ◽  
James Economy
Keyword(s):  
Activated Carbon ◽  
Surface Chemistry ◽  
Pore Size ◽  
Carbon Fibers ◽  
Adsorption Properties ◽  
Activated Carbon Fibers

Preparation and Characterization of Activated Carbon Fibers from Jute Fibers by Phosphoric Acid Activation

2012 ◽  
Vol 184-185 ◽  
pp. 1110-1113 ◽  
Author(s):  
Li Fen He ◽  
Qi Xia Liu ◽  
Tao Ji ◽  
Qiang Gao
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Phosphoric Acid ◽  
Carbon Fibers ◽  
Activated Carbon Fibers ◽  
Optimum Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Jute Fibers ◽  
Activating Agent

Various jute-based activated carbon fibers were prepared by using jute fibers as raw materials and phosphoric acid as activating agent. The effects of three main factors such as concentration of activating agent, activation temperature and activation time on the yield and adsorptive properties of active carbon fibers were investigated via orthogonal experiments. The surface physical morphology of jute-based activated carbon fiber was also observed by using Scanning Electron Microscope. Results showed that the optimum conditions were phosphoric acid concentration of 4 mol/L, activation temperature of 600 °C and activation time of 1h. The yield, iodine number and amount of methylene blue adsorption of the active carbon fiber prepared under optimum conditions were 37.99 %, 1208.87 mg/g and 374.65 mg/g, respectively.

Dihydroxybenzene isomers electrochemical sensor based on activated carbon sensitive material activated by mechanochemistry and low-dosage phosphoric acid

2021 ◽  
Author(s):  
Xuan Yang ◽  
Chenlu He ◽  
Yu Lin ◽  
Yijuan Qiu ◽  
Pengfei Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Electrochemical Sensor ◽  
Sensitive Material ◽  
Dihydroxybenzene Isomers ◽  
Low Dosage

Dihydroxybenzene isomers electrochemical sensor based on bamboo activated carbon (MCPBAC) sensitive material activated by mechanochemistry and low-dosage phosphoric acid was fabricated in this work. The sensor modified by MCPBAC with...

Preparation of bamboo-based mesoporous activated carbon by phosphoric acid activation

Carbon ◽  
2014 ◽  
Vol 72 ◽  
pp. 429 ◽  
Author(s):  
Motohide Hata ◽  
Yoshimasa Amano ◽  
Masami Aikawa ◽  
Motoi Machida ◽  
Fumio Imazeki
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Acid Activation ◽  
Mesoporous Activated Carbon ◽  
Phosphoric Acid Activation
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