Characterization and Assessment of Cockle Shell as Potential CO2 Adsorbents

2014 ◽  
Vol 625 ◽  
pp. 685-689 ◽  
Author(s):  
Nurulhuda Azmi ◽  
Suzana Yusup ◽  
Khalik M. Sabil
Keyword(s):  
High Temperature ◽  
Surface Area ◽  
Mesoporous Materials ◽  
Pore Volume ◽  
Material Characterization ◽  
Calcination Process ◽  
Crucial Step ◽  
Cockle Shell ◽  
High Temperature Calcination ◽  
Better Than

Material characterization is a crucial step to ensure the characteristics and properties of the samples are comparable to the standard adsorbent and suitable for CO2 adsorption. The objective of this work is to characterize natural calcium based materials for CO2 adsorption which are obtained from waste cockle shells. Characterization analyses are conducted by using XRD, BET and FESEM. Material characterization indicates that raw cockle shell is made up of aragonite and needle-like structure. It is also shown that CaCO3 can be decomposed to CaO through high temperature calcination process. Through physisorption analysis, the samples are classified as mesoporous materials and it is shown that calcined cockle shell is better than raw cockle shell in term of surface area and pore volume. The results proved that calcium based materials could be successfully employed as sorbent for CO2 separation.

Structural and optical amendment ofPVDF into CQDsthrough high temperature calcination process

2021 ◽  
pp. 130616
Author(s):  
Gun Anit Kaur ◽  
Vinit Sharma ◽  
Neeraj Gupta ◽  
Mamta Shandilya ◽  
Radheshyam Rai
Keyword(s):  
High Temperature ◽  
Calcination Process ◽  
High Temperature Calcination

Synthesis and Preparation of Al-MCM-41 Mesoporous Materials Using Oil Shale Residue

2019 ◽  
Vol 944 ◽  
pp. 1192-1198
Author(s):  
Rong Wang ◽  
Zhi Xiang Lin ◽  
Yang Zhao ◽  
Xiao Dong Xu ◽  
Yan Xi Deng
Keyword(s):  
Surface Area ◽  
Mesoporous Materials ◽  
Pore Volume ◽  
Oil Shale ◽  
Bet Surface Area ◽  
Ammonium Bromide ◽  
Scale Production ◽  
Scanning Electron Micrographs ◽  
One Step ◽  
Mcm 41

An Al-supported cage-like mesoporous silica type MCM-41 has been prepared using a simple one-step synthetic procedure using oil shale residue and CTAB(Hexadecyl trimethyl Ammonium Bromide) as the template. The effects of temperature on the porosity, structure and surface area of Al-MCM-41 mesoporous materials were characterized by X-ray powder diffraction, N2adsorption desorption, scanning electron micrographs (SEM), transmission electron microscopy (TEM) techniques and Fourier transform infrared spectroscopy (FT-IR). The results indicated that temperature was a key to the characteristics of Al-MCM-41 materials, and when the temperature up to 333 K, Al-MCM-41 exhibited excellent characteristics with high degree of order, high surface area and pore volume. The one-step hydrothermal synthesized MCM-41 mesoporous material possessed high BET surface area, high pore size and high pore volume. They are respectively 835.1 m2/g, 32.6 Å and 1.22 cm3/g under the condition of the Si : Al =78:1, pH =10, crystallization temperature was 333K, crystallization time was 48h and calcination at 823 K for 5 h in air. All the results indicated the possibility of using oil shale residue as silicon and aluminum source to produce Al-MCM-41, and gave us a new way to recycle a solid waste. As well as this made it impossible to large-scale production of Al-MCM-41. Keywords: Al-MCM-41 mesoporous materials, oil shale residue, one-step synthesis

Facile synthesis and performance of Na-doped porous lithium-rich cathodes for lithium ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57310-57319 ◽  
Author(s):  
Di Wang ◽  
Meihong Liu ◽  
Xianyou Wang ◽  
Ruizhi Yu ◽  
Gang Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Lithium Ion Batteries ◽  
Solvothermal Method ◽  
Lithium Ion ◽  
Facile Synthesis ◽  
Calcination Process ◽  
And Performance ◽  
High Temperature Calcination

Na-doped porous lithium-rich (Li-rich) cathode microspheres (∼1 μm) were firstly prepared via the solvothermal method and subsequently a high-temperature calcination process.

scholarly journals Hydrothermal Synthesis of SBA-15 Using Sodium Silicate Derived from Coal Gangue

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Jing Wang ◽  
Li Fang ◽  
Fangqin Cheng ◽  
Xiaofang Duan ◽  
Rongming Chen
Keyword(s):  
Hydrothermal Synthesis ◽  
Pore Size ◽  
Surface Area ◽  
Sodium Silicate ◽  
Mesoporous Materials ◽  
Pore Volume ◽  
Coal Gangue ◽  
Hydrothermal Route ◽  
Hydrothermal Temperature ◽  
Ordered Mesoporous

Well-ordered SBA-15 was prepared with a hydrothermal route by sodium silicate derived from coal gangue. The as-prepared sample was analyzed by SAXRD, BET, TEM, and SEM, respectively. The results indicate that at a low hydrothermal temperature of 100∘C the well-ordered mesoporous SBA-15 could be synthesized. The surface area, pore volume, and pore size of the sample are 552 m2/g, 0.54 cm3/g, and 7.0 nm, respectively. It is suggested that coal gangue could be used in obtaining an Si source to prepare mesoporous materials, such as SBA-15.

scholarly journals Synthesis and mechanism of aluminum silicate mesoporous materials by F108 template

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Zhijun Ma ◽  
Jing Gao ◽  
Xingyuan Weng ◽  
Shuai Yang ◽  
Kai Peng
Keyword(s):  
Pore Size ◽  
Sodium Hydroxide ◽  
Surface Area ◽  
Mesoporous Materials ◽  
Pore Volume ◽  
Average Pore Size ◽  
Molar Ratio ◽  
Aluminum Silicate ◽  
Synthetic Material ◽  
Average Pore

Abstract Aluminosilicate mesoporous materials were synthesized using F108 template (polyethylene glycol-polypropylene glycolpolyethylene glycol) at a concentration of 0.034 g/ml and the molar ratio of Al2O3 to SiO2 was 0.09. The products were then characterized using nitrogen adsorption/desorption tests, scanning electron microscopy (SEM), and X-ray diffraction (XRD). The effects of various crystallization temperatures as well as sodium hydroxide concentrations on the average diameter, pore volume, surface area, and morphology of the synthetic material were analyzed. Results showed that a sodium hydroxide concentration of 11 mol/L and a crystallization temperature of 130 °C produced a synthetic material with regular pore size and homogeneous arrangement including a specific surface area of 137.62 m2/g, an average pore volume of 0.27 cm3/g, along with an average pore size of 15.33 nm.

scholarly journals Unrivaled combination of surface area and pore volume in micelle-templated carbon for supercapacitor energy storage

2017 ◽  
Vol 5 (26) ◽  
pp. 13511-13525 ◽  
Author(s):  
Jesse Pokrzywinski ◽  
Jong K. Keum ◽  
Rose E. Ruther ◽  
Ethan C. Self ◽  
Miaofang Chi ◽  
...  
Keyword(s):  
Heat Treatment ◽  
High Temperature ◽  
Energy Storage ◽  
Surface Area ◽  
Pore Volume ◽  
Micelle Structure ◽  
Supercapacitor Energy Storage ◽  
Templated Carbon

We created Immense Surface Area Carbons (ISACs) by a novel heat treatment that stabilized the micelle structure in a biological based precursor prior to high temperature combined activation – pyrolysis.

Characterization of lithium zinc titanate doped with metal ions as anode materials for lithium ion batteries

2021 ◽  
Author(s):  
Haoqing Tang ◽  
Yaoming Song ◽  
Lingxing Zan ◽  
Yizhi Yue ◽  
Di Dou ◽  
...  
Keyword(s):  
High Temperature ◽  
Anode Materials ◽  
Lithium Ion ◽  
Lithium Storage ◽  
Zinc Titanate ◽  
Calcination Process ◽  
Electronic Conductivities ◽  
Metal Doped ◽  
High Temperature Calcination

The metal doped Li2Zn0.9M0.1Ti3O8 products are successfully fabricated via a high temperature calcination process. The ionic and electronic conductivities of Li2Zn0.9Nb0.1Ti3O8 has improved and shows the best lithium storage.

Facile fabrication of Si/Sb/Sb2O3/G@C composite electrodes for high-performance Li-ion batteries

2020 ◽  
Vol 44 (10) ◽  
pp. 4122-4128
Author(s):  
Feiyuan Sun ◽  
Hao Feng ◽  
Shilun Gao ◽  
Dandan Yang ◽  
Huabin Yang
Keyword(s):  
Composite Material ◽  
High Temperature ◽  
Ball Milling ◽  
High Performance ◽  
Composite Electrodes ◽  
Li Ion Batteries ◽  
Calcination Process ◽  
Facile Fabrication ◽  
Li Ion ◽  
High Temperature Calcination

Facile fabrication of high-performance Si/Sb/Sb2O3/G@C composite material via the ball milling and high temperature calcination process is reported.

scholarly journals Preparation and Characterization of CuO/r-Al2O3 for Adsorption of SO2 in Flue Gas

2015 ◽  
Vol 9 (7) ◽  
pp. 107 ◽  
Author(s):  
Yuono Yuono ◽  
David Bahrin ◽  
Herri Susanto
Keyword(s):  
Adsorption Capacity ◽  
Surface Area ◽  
Flue Gas ◽  
Pore Volume ◽  
Batch Adsorption ◽  
Calcination Process ◽  
Cu Content ◽  
Similar Tendency ◽  
Pore Characteristic

Adsorbent CuO/r-Al2O3 was successfully prepared by the dry impregnation using Cu(NO3)2.3H2O solution oncommercial r-Al2O3. Impregnation and calcination process was be done repeatedly to get a desired CuO contenton the support. The impregnations were done at 50oC for 8 hours or 120°C for 5 hours. Calcinations were carriedout at a temperature of 400oC for 8 hours. Adsorbent obtained from this preparation contained Cu: 7.93% (named8Cu), 14.76% (15Cu) and 28.98% (30Cu). Pore characteristic indicated that the surface area decreased with theincrease in Cu content in the adsorbent (from 207 in original support to 124 m2/g in 8Cu). Similar tendency wasfound for the pore volume (from 0.47 to 0.28 mL/g).In batch adsorption test, the amount of adsorbed SO2 was calculated from the increase in mass of adsorbent.Adsorbent 8Cu had the best adsorption capacity in term of mol ratio, ie. 0.78 SO2/CuO (close to stoichiometry).Original support of r-Al2O3 was found to be inert to SO2. In semi-continue test, the adsorption was carried undera flow of gas containing 2.5% SO2. The amount of adsorbed SO2 was calculated from the different of SO2content between influent to effluent. It was found again that the best adsorbent was 8Cu with the adsorptioncapacity of 0.97 mol/mol CuO.

scholarly journals Tunable Effect of the Calcination of the Silanol Groups of KIT-6 and SBA-15 Mesoporous Materials

2020 ◽  
Vol 10 (3) ◽  
pp. 970 ◽  
Author(s):  
Adriano M. Basso ◽  
Bruna P. Nicola ◽  
Katia Bernardo-Gusmão ◽  
Sibele B. C. Pergher
Keyword(s):  
Physical Properties ◽  
Mesoporous Materials ◽  
Molecular Sieves ◽  
Textural Properties ◽  
Organic Template ◽  
Calcination Process ◽  
Crucial Step ◽  
Silanol Groups ◽  
The Ideal

The calcination process is a crucial step during SBA-15 and KIT-6 synthesis. It is used to completely remove the organic template and condense silanol groups, and it allows the determination of the textural and physical properties of these materials, depending on the adopted conditions. Moreover, calcination influences the number of silanols available on the surface of the material. The concentration of silanols is important if these materials were synthesized for use in adsorption or functionalization. To understand and optimize the silanol groups of SBA-15 and KIT-6, in this study, the temperature and time calcination parameters were varied. The experiments were performed at 300, 400, and 500 °C for 300, 400, and 500 min. The results show that the ideal temperature to preserve the silanol groups is 300 °C, but to optimize the textural properties, it is better to calcine these molecular sieves at 400 °C. A calcination for 10 h did not give better results than a calcination for 5 h, demonstrating that the former duration is excessive for use.

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