scholarly journals Effect of the Ceramic Burning Temperature on the Characteristics of the Emission Spectrum (LIBS) of Al and Transmittance (FTIR) of Al-O on Ceramic Body of BL-1 Type

2020 ◽  
Vol 21 (2) ◽  
pp. 60
Author(s):  
Nyoman Wendri ◽  
Aprilion Krisandi ◽  
I Gusti Putu Yoyok Irawan
Keyword(s):  
Emission Spectrum ◽  
Ceramic Body ◽  
Burning Temperature ◽  
Atomic Content ◽  
Ceramic Samples ◽  
Ftir Characterization ◽  
Stretching Vibrations ◽  
Clay Kaolin

Aluminum (Al) contained in materials such as clay, kaolin is one of the elements that play an important role in the ceramic body. Al binds to other atoms like Si (quartz) to form a ceramic frame that is strong and not easily cracked. In addition, the bond with the group -OH plays an important role in relation to the ability of ceramics to absorb water. In this study, BL-1 type ceramic samples have been made with five variations of the burning temperature between 800-1000oC. To determine changes in the Al atomic content of ceramic samples were characterized by LIBS and FTIR spectrophotometers. The results of LIBS characterization of all samples showed two bands with peaks at wavelengths of 394.4 nm (Al-I) and 396.6 nm (Al-II) which are the characteristic peaks of Al atoms. The peaks with the highest intensity of Al-I and Al-II were resulted by samples that were burned at 900oC. Meanwhile, the results of FTIR characterization have shown a spectrum with bands at wavenumbers between 1030-1060 and 1150 cm-1 which are characteristic bands of stretching vibrations from Al-O. The peak of the band in the wavenumber between 1030-1060 cm-1 shifts towards a larger wavenumber with increasing the burning temperature.

Versatile thin layer spectroelectrochemical cell employing specular reflectance

1987 ◽  
Vol 65 (5) ◽  
pp. 919-923 ◽  
Author(s):  
A. Scott Hinman ◽  
Brad J. Pavelich
Keyword(s):  
Thin Layer ◽  
Specular Reflection ◽  
Incident Light ◽  
Tetrabutylammonium Perchlorate ◽  
Specular Reflectance ◽  
Advantages And Disadvantages ◽  
Ftir Characterization ◽  
Sandwich Type

A versatile thin layer spectroelectrochemical cell employing specular reflection of the incident light beam from the electrode surface is described. Its application to in-situ uv–vis and FTIR characterization of the products of electrochemical reactions and to thin layer voltammetry and coulometry as well as conventional cyclic voltammetry is demonstrated for the oxidation of tetraphenylporphinatozinc in dichloroethane/tetrabutylammonium perchlorate solution. The advantages and disadvantages of this type of cell as compared to more conventional sandwich type optically transparent thin layer electrodes are discussed.

Characterization of Granulometric Fractions of Ash from Boiler Burnt Sugarcane Bagasse

2008 ◽  
Vol 591-593 ◽  
pp. 471-476 ◽  
Author(s):  
Monica Castoldi Borlini Gadioli ◽  
Carlos Maurício Fontes Vieira ◽  
Rubén Jesus Sánchez Rodríguez ◽  
R.A. Conte ◽  
Daltro Garcia Pinatti ◽  
...  
Keyword(s):  
Sugarcane Bagasse ◽  
Alkaline Earth ◽  
Ceramic Body ◽  
Microstructural Characterization ◽  
Particle Sizes ◽  
Main Crystalline Phase ◽  
Sugarcane Bagasse Ash ◽  
Significant Production ◽  
Red Ceramics

In the municipal area of Campos dos Goytacazes–RJ several ceramic industries are involved with a significant production of bricks and tiles. These ceramic products can serve as matrices for the incorporation of industrial residues such as the ash of sugarcane bagasse used as fuel in the boilers of the sugar and alcohol plants. The incorporation of ashes in ceramics is a solution that eventually can cause an improvement on the properties of the material. The objective of this work is to characterize granulometric fractions of sugarcane bagasse ash with particle sizes less than 149, 75 and 44 μm aiming at the ash incorporation into red ceramics. Chemical, mineralogical and microstructural characterization were carried out in the granulometric fractions. The results showed that the granulometric fractions present as main crystalline phase the cristobalite and that the ashes with smaller particle sizes can improve the densification of the ceramic body by the formation of more liquid phase during firing, due to the presence of less silica and more alkaline- and alkaline-earth oxides than the original ash.

scholarly journals Synthesis and Characterization of Magnetic Nanoparticles (MNP) and MNP-Chitosan Composites

2019 ◽  
Author(s):  
Monica Namizie Asey ◽  
Norhaizan Mohd Esa ◽  
Che Azurahanim Che Abdullah
Keyword(s):  
Chemical Bonding ◽  
Magnetic Nanoparticle ◽  
Ftir Analysis ◽  
Optimum Size ◽  
Optimum Ratio ◽  
Anticancer Drug Delivery ◽  
The Common ◽  
Stretching Vibrations ◽  
Direct Toxicity

Coating of iron oxide nanoparticles (MNP) is the common approach to reduce the effects of direct toxicity due to the ion oxidation that lead to the damage of DNA. This study investigates the effect of different concentration of Chitosan (Cs) used to coat the magnetic nanoparticle with variation in the crystallite size, chemical bonding, changes in weight and surface morphology. From the XRD results, it shows that the sample 1MNP-1Cs has optimum size of 13.42 ± 0.01 nm. From the FTIR analysis, it is revealed that there are three types of chemical bonding that occur in the MNP-Cs composites which are stretching vibrations of C-H, N–H vibration belonging to Cs and the Fe-O bonds from the MNP. From the FESEM analysis, it is found that the MNP-Cs composites have a wellshaped with spherical in form, as well as, smooth surfaces. As for TGA, the thermal decomposition of MNP nanocomposites was based on the amount of Cs and MNP used to produce the nanocomposites. Further studies will be conducted to find the optimum ratio of MNP-Cs for anticancer drug delivery application.

HIPed Tailored Pyrochlore-Rich Glass-Ceramic Waste Forms for the Immobilization of Nuclear Waste

2008 ◽  
Vol 1124 ◽  
Author(s):  
Melody Lyn Carter ◽  
Hui Li ◽  
Yingjie Zhang ◽  
Andrew L Gillen ◽  
Eric R Vance
Keyword(s):  
Nuclear Waste ◽  
Glass Ceramic ◽  
Glass Ceramics ◽  
Spectroscopic Characterization ◽  
Chemical Durability ◽  
Intermediate Level ◽  
Crystalline Phases ◽  
Waste Forms ◽  
Ceramic Samples

AbstractHot isostatically pressed (HIPed) glass-ceramics for the immobilization of uranium-rich intermediate-level wastes and Hanford K-basin sludges were designed. These were based on pyrochlore-structured Ca(1-x)U(1+y)Ti2O7 in glass, together with minor crystalline phases. Detailed microstructural, diffraction and spectroscopic characterization of selected glass-ceramic samples has been performed, and chemical durability is adequate, as measured by both MCC-1 and PCT-B leach tests.

In situ FTIR characterization of the adsorption of CO and its reaction with NO on Pd-based FCC low NOx combustion promoters

2007 ◽  
Vol 127 (1-4) ◽  
pp. 189-198 ◽  
Author(s):  
Oleg S. Alexeev ◽  
Sundaram Krishnamoorthy ◽  
Cody Jensen ◽  
Michael S. Ziebarth ◽  
George Yaluris ◽  
...  
Keyword(s):  
In Situ Ftir ◽  
Ftir Characterization ◽  
Low Nox Combustion ◽  
Adsorption Of Co ◽  
Combustion Promoters

Ground‐Based and Balloon‐Borne Characterization of the Far Infrared Atmospheric Emission Spectrum

2009 ◽  
Author(s):  
Luca Palchetti ◽  
Giovanni Bianchini ◽  
Bruno Carli ◽  
Carmine Serio
Keyword(s):  
Emission Spectrum ◽  
Far Infrared ◽  
Atmospheric Emission

Effect of Dispersant Addition on Properties of Ceramic Pieces from Kampung Dengir, Besut, Terengganu, Malaysia

2017 ◽  
Vol 888 ◽  
pp. 28-32
Author(s):  
Noor Asliza Ismail Adnen ◽  
Nur Atiqah Azwa Joulme Morad ◽  
Mohd Aidil Adhha Abdullah ◽  
Mohd Al Amin Muhamad Nor
Keyword(s):  
Water Absorption ◽  
Rheological Behavior ◽  
Ceramic Body ◽  
X Ray ◽  
Test Pieces ◽  
Ceramic Slurry ◽  
Sample Characterization ◽  
Ball Clay ◽  
Good Flow

The abundancy of ball clay can be transform into more useful form. This study was conducted to investigate the effect of different amount of dispersant on ceramic system. Ball clay from Kampung Dengir, Besut, Terengganu was used as starting powder while sodium silicate was used as dispersant to produce good flow ability, minimum viscosity and controllable ceramic slurry. Ceramic slurry was prepared by adding additives such as binder, flux, filler and dispersant, casted onto POP mould to obtain ceramic body. Ceramic then cut into test pieces (8cm x 2cm) and mixed for 2 h and aged for 2 days before dried at 70 °C overnight and sintered at temperature of 800-1200 °C in furnace for 2 h with heating rate 5 °C/min. Slurries also tested for rheological properties using rheometer (brand Thermo Haake). Viscosity and shear stress were measured to investigate the rhoelogical behaviour of slip with different amount of dispersant (0.03 mL to 0.06 mL/200 mL of sample). Characterization of raw samples has been done using X-ray diffractometer (XRD) showing the presence of kaolinite and quartz. Effect of dispersant on rheological behavior, rate of shrinkage, water absorption, porosity and density were investigated It was found that increase in amount of dispersant added exhibit the best rheological behavior, and 0.05 mL dispersant was the optimum amount in term of rate of shrinkage, water absorption, porosity and density. As a conclusion, 0.05 mL was the optimum dispersant which gives best rheological behavior and almost fault-free ceramic bodies

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