Zeolite-Containing Terra-Silicea as a Component of Composite Binders

2019 ◽  
Vol 974 ◽  
pp. 136-141 ◽  
Author(s):  
Valery S. Lesovik ◽  
Sergey I. Leshchev ◽  
Marina S. Ageeva ◽  
Natalia I. Alfimova
Keyword(s):  
Subsequent Development ◽  
Adsorption Properties ◽  
Chemical Characteristics ◽  
Crystal Chemical ◽  
Capillary Porosity ◽  
High Adsorption ◽  
Solution Intake ◽  
Monolithic Structure

The work is devoted to the study of the zeolite terra silicea (ZTS) for the subsequent development of composite binders based on its properties. Zeolite-containing rock - Terra silicea has high adsorption properties, due to the crystal-chemical features of the structure of its minerals and the predominance of capillary porosity in the rock. The rock-forming zeolite-containing Terra silicea mineral (clinoptilolite), due to the crystal chemical characteristics of its structure, is expected to act as a “battery” of the mortar part of the hydrating system, ensuring the solution intake in the later stages of hardening and, thereby, creating conditions for monolithic structure during the operational period.

scholarly journals Morphological and crystal chemical characteristics of gallbladder biomineralization

2020 ◽  
Vol 37 (2) ◽  
pp. 139-148
Author(s):  
Roman Moskalenko ◽  
Sergiy Danilchenko ◽  
Artem Piddubnyi ◽  
Oleksandr Kravets ◽  
Inna Chorna ◽  
...  
Keyword(s):  
Chemical Characteristics ◽  
Crystal Chemical

Characterization of Metakaolin-Based Materials for Dye Adsorption from Aqueous Solution

2018 ◽  
Vol 283 ◽  
pp. 88-94
Author(s):  
Narumon Lertcumfu ◽  
Pharatree Jaita ◽  
Gobwute Rujijanagul ◽  
Tawee Tunkasiri
Keyword(s):  
Aqueous Solution ◽  
Aluminum Oxide ◽  
Distribution Coefficient ◽  
Alkaline Solution ◽  
Dye Adsorption ◽  
Adsorption Properties ◽  
High Adsorption ◽  
Uptake Capacity ◽  
High Adsorption Capacity

The properties of metakaolin-based materials were investigated. The studied materials were prepared by mixing metakaolin and aluminum oxide in alkaline solution. The obtained samples were cast into plastic molds and then left at 27°C for 24 h. The properties of the materials were investigated using XRD, FTIR, and SEM. The obtained results suggested that reaction of the mixed materials occurred. The adsorption properties of the materials, including removal efficiency, distribution coefficient, and uptake capacity were determined. The obtained results revealed that the studied materials exhibited high adsorption capacity, which is good for the adsorbent applications.

scholarly journals Structural and crystal-chemical characteristics of the apatite deposits from human aortic walls

2018 ◽  
Vol 10 (2) ◽  
pp. 110-119
Author(s):  
Sergei N. Danilchenko ◽  
Aleksei N. Kalinkevich ◽  
Roman A. Moskalenko ◽  
Vladimir N. Kuznetsov ◽  
Aleksandr V. Kochenko ◽  
...  
Keyword(s):  
Chemical Characteristics ◽  
Crystal Chemical

A new anionic metal–organic framework showing tunable emission by lanthanide(III) doping and highly selective CO2 adsorption properties

RSC Advances ◽  
2015 ◽  
Vol 5 (31) ◽  
pp. 24655-24660 ◽  
Author(s):  
Rong-Ying Chen ◽  
Dan Tian ◽  
Yun-Wu Li ◽  
Ying-Bin Lv ◽  
Hong-Wei Sun ◽  
...  
Keyword(s):  
Co2 Adsorption ◽  
Metal Organic Framework ◽  
Adsorption Properties ◽  
High Adsorption ◽  
Adsorption Selectivity ◽  
Metal Organic ◽  
Tunable Emission ◽  
Organic Framework

A 3D porous anionic MOF (1), decorated with -NH2 and N sites, can serve as a host for the encapsulation of lanthanide(iii) cations for emission tuning. Besides, it also shows high adsorption selectivity for CO2 over CH4 and N2 at 273 K.

scholarly journals THE COMPARATIVE DESCRIPTION OF THE ADSORPTION PROPERTIES OF ENTEROSORBENTS

2016 ◽  
pp. 41-46
Author(s):  
V. A. Filippova ◽  
A. V. Lysenkova ◽  
V. A. Ignatenko ◽  
A. K. Dovnar
Keyword(s):  
Heavy Metals ◽  
Vitamin C ◽  
Adsorption Capacity ◽  
Active Surface ◽  
Adsorption Properties ◽  
Fourth Generation ◽  
High Adsorption ◽  
Toxic Heavy Metals ◽  
High Adsorption Capacity ◽  
Main Component

The aim of research: comparative study of adsorption capacity and selectivity of enterosorbents of different generations. Material and methods. The subject of the study is enterosorbents widely applied in clinical practice. They belong to different generations and exhibit different adsorption capacities and different doses of daily application. Results. It was found out that enterosorbents differed from one another and the latest generation had more perfect and diverse adsorption properties. The experimental data confirmed that enterosorbents of the fourth generation, in particular white carbon, whose main component is silicon dioxide exhibited a highly developed active surface and high adsorption capacity relative to highly toxic heavy metals, while its ability to bind and remove useful components (biometals and vitamin C) in organism was negligibly low. Conclusions. The enterosorbent of the fourth generation «White coal» possess high adsorption capacity toward heavy metals and simultaneously are characterized by negligibly low capacity to bind and remove bioactive compounds such as biometals and vitamin C.

scholarly journals A Multifunctional 3D Supermolecular Co Coordination Polymer With Potential for CO2 Adsorption, Antibacterial Activity, and Selective Sensing of Fe3+/Cr3+ Ions and TNP

2021 ◽  
Vol 9 ◽  
Author(s):  
Xiaojing Zhou ◽  
Lili Liu ◽  
Hang Kou ◽  
Shimei Zheng ◽  
Mingjun Song ◽  
...  
Keyword(s):  
Co2 Adsorption ◽  
Magnetic Measurements ◽  
Supermolecular Structure ◽  
Isosteric Heat ◽  
Adsorption Properties ◽  
Antiferromagnetic Exchange ◽  
High Adsorption ◽  
Adsorption Ability ◽  
Secondary Building Units ◽  
Solvothermal Conditions

A 3D supermolecular structure [Co3(L)2 (2,2′-bipy)2](DMF)3(H2O)3 1) (H3L = 4,4′,4″-nitrilotribenzoic acid) has been constructed based on H3L, and 2,2′-bipy ligands under solvothermal conditions. Compound 1 can be described as a (3, 6)-connected kgd topology with a Schläfli symbol (43)2(46.66.83) formed by [Co3(CO2)6] secondary building units. The adsorption properties of the activated sample 1a has been studied; the result shows that 1a has a high adsorption ability: the CO2 uptakes were 74 cm3·g−1 at 273 K, 50 cm3·g−1 at 298 K, the isosteric heat of adsorption (Qst) is 25.5 kJ mol−1 at zero loading, and the N2 adsorption at 77 K, 1 bar is 307 cm3 g−1. Magnetic measurements showed the existence of an antiferromagnetic exchange interaction in compound 1, besides compound 1 exhibits effective luminescent performance for Fe3+/Cr3+ and TNP.

scholarly journals Studies of adsorption of polychlorocarbons on carbon blacks by gas chromatography

1985 ◽  
Vol 2 (4) ◽  
pp. 219-228 ◽  
Author(s):  
E. V. Zagorevskaya ◽  
N. V. Ishchenko ◽  
A. V. Kiselev ◽  
N. V. Kovaleva
Keyword(s):  
Gas Chromatography ◽  
Carbon Black ◽  
Adsorption Properties ◽  
High Adsorption ◽  
Heats Of Adsorption ◽  
Carbon Blacks ◽  
Before And After ◽  
Retention Volumes ◽  
High Adsorption Capacity ◽  
Airborne Chemicals

Adsorption properties of carbon black before and after modification to polyhalogenohydrocarbons, including polyorganochlorine pesticides, have been investigated. It has been shown that graphitised thermal carbon blacks and carbochroms possess high adsorption capacity relative to the above compounds and can be used as supporting adsorbents to analyse these airborne chemicals. Modification raises the selectivity of adsorbents to the compounds being investigated and lowers retention volumes and heats of adsorption, which makes it possible to carry out thermal desorption of the accumulated species at lower temperatures.

scholarly journals Magnetically Functionalized Moss Biomass as Biosorbent for Efficient Co2+ Ions and Thioflavin T Removal

Materials ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 3619 ◽  
Author(s):  
Martin Pipíška ◽  
Simona Zarodňanská ◽  
Miroslav Horník ◽  
Libor Ďuriška ◽  
Marián Holub ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Adsorption Properties ◽  
Thioflavin T ◽  
Oxide Nanoparticles ◽  
High Adsorption ◽  
Efficient Removal ◽  
High Adsorption Capacity ◽  
Rapid Kinetics ◽  
Adsorption Desorption ◽  
Rhytidiadelphus Squarrosus

Microwave synthesized iron oxide nanoparticles and microparticles were used to prepare a magnetically responsive biosorbent from Rhytidiadelphus squarrosus moss for the rapid and efficient removal of Co2+ ions and thioflavin T (TT). The biocomposite was extensively characterized using Fourier transformed infrared (FTIR), XRD, SEM, and EDX techniques. The magnetic biocomposite showed very good adsorption properties toward Co2+ ions and TT e.g., rapid kinetics, high adsorption capacity (218 μmol g−1 for Co and 483 μmol g−1 for TT), fast magnetic separation, and good reusability in four successive adsorption–desorption cycles. Besides the electrostatic attraction between the oxygen functional moieties of the biomass surface and both Co2+ and TT ions, synergistic interaction with the –FeOH groups of iron oxides also participates in adsorption. The obtained results indicate that the magnetically responsive biocomposite can be a suitable, easily separable, and recyclable biosorbent for water purification.

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