Thermal dehydration of colemanite: kinetics and mechanism determined using the master plots method

Kizilca, Meltem; Çopur, Mehmet

doi:10.1080/00084433.2017.1349023

Cited by 14 publications

(10 citation statements)

References 43 publications

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“…"Fire-resistant particleboards," BioResources 13(2), 4239-4251. 4247 2017; Kizilca and Copur 2017). Kizilca and Copur (2017) discussed that the decomposition of colemanite mineral starts with the removal of water molecules in a two-step reaction mechanism.…”

Section: Thermal Analysis Results and Activation Energy Calculationmentioning

confidence: 99%

“…4247 2017; Kizilca and Copur 2017). Kizilca and Copur (2017) discussed that the decomposition of colemanite mineral starts with the removal of water molecules in a two-step reaction mechanism. While only 1.2% of total water content of colemanite is released at 100 °C, dramatic decreases are seen at 320 °C.…”

Section: Thermal Analysis Results and Activation Energy Calculationmentioning

confidence: 99%

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Thermal Degradation of Particleboards Incorporated with Colemanite and Common Boron-based Fire Retardants

Terzi

2018

BioResources

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Fire-resistance and thermal degradation were evaluated for particleboards incorporated with colemanite and common boron-based fire retardants (zinc borate and boric acid:borax mixture). The main purpose of this study was to suggest an alternative fire retardant to be used in particleboards with low cost and considerably lower environmental impact compared to common boron-based fire retardants. For this purpose, the colemanite mineral was chosen as a raw boron mineral because of its good fire performance demonstrated previously in wood-plastic composites. The test compounds were incorporated into the furnish during the particleboard manufacturing process. Fire performance tests and thermal degradation analysis were then performed in the treated particleboard specimens. Mass loss calorimeter tests were applied to determine the oxidative thermal degradation properties of the produced particleboards, whilst thermogravimetric analyses were used to evaluate the non-oxidative thermal behavior of the particleboards. The lowest peak heat release rate and the highest activation energy values were recorded for the boric acid:borax mixture-incorporated particleboards at a loading level of 10%. Overall the results showed that colemanite had a lower fire-retardant property in the particleboards compared to the common boron-based compounds tested in the study.

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Section: Thermal Analysis Results and Activation Energy Calculationmentioning

confidence: 99%

Section: Thermal Analysis Results and Activation Energy Calculationmentioning

confidence: 99%

Thermal Degradation of Particleboards Incorporated with Colemanite and Common Boron-based Fire Retardants

Terzi

2018

BioResources

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“…Activation energy ( ) is calculated from the slope of parallel lines and pre-exponential factor (A) is determined from the intercept of the plot of Eq. (1) [5,10,11].…”

Section: Kinetic Analysismentioning

confidence: 99%

“…Activation energy ( ) is calculated from the slope of parallel lines and preexponential factor (A) is determined from the intercept of the plot of Eq. (2) [5,11]: (2) where β is the heating rate, Ea is the activation energy, T is the obsolete temperature, A is the pre-exponential factor and R is the gas constant.…”

Section: Kinetic Analysismentioning

confidence: 99%

Pyrolytic Degradation Behavior of Biomass Seeds: Cherry And Peach Seed

Çoruh

Bayrakçeken

2020

Kocaeli Journal of Science and Engineering

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Pyrolytic degradation behavior of peach and sour cherry seed were investigated by thermal analysis techniques such as thermogravimetric (TG) and derivative thermogravimetric (DTG). Pyrolysis study of peach and sour cherry seed, which are the sources of plant biomass, were carried out under air flowrate of 10 mL.min -1 and heating rates of 2.5,5,10 and 20 K min -1 in the temperature range of 298-1173 K by means of thermal analysis techniques. The activation energy and pre-exponential factor were determined with different methods as Kissinger-Akahira-Sunose (KAS) and Flyn-Wall-Ozawa (FWO). Although the FWO method gives higher values, it was observed that all activation energy values calculated by both methods are compatible with each other. In addition, as the amount of volatile matter increases, the decomposition becomes difficult due to the increase in mass transfer resistance and pressure, so it was determined that the activation energy of the peach seed is higher than the sour cherry seed.

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“…The band between 1640 and 1690 cm -1 resulted from C = O stretching. The peak at 1654 cm -1 is due to H -O -H stretching and the peaks at 1558 and 1450 cm -1 are attributed to B 3 -O stretching [4,15,28]. The peak at 1311 cm -1 and 1122 cm -1 are because of B -OH and B 4 -O stretchings [29].…”

Section: Chemicalsmentioning

confidence: 99%

A new finishing process of cotton fabric

Akçali

Bulut

2019

Industria Textila

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Ecological and economic responsibilities have led to the search for alternative material applications in the textile sector as well as in all sectors. Sol-gel technology is one of these applications with advantages such as realization under low temperatures and enabling the desired product shape and format. In this study, the samples of 100% cotton fabric have been processed by using pigment printing technique with natural pumice, amorphous silica and colemanite materials and printing fixation process has been performed by using the sol gel coating method. The sol gel treatment has been carried out with basic catalyst according to the zeta potentials of the solid particulate materials used. After the new created process, surface morphologies, EDS point analysis and F-TIR analysis of all fabric samples have been performed. In addition, the properties such as strength, UV protection, air permeability, water permeability, abrasion resistance, flammability of all fabrics have been investigated. The results of surface analysis have proven that the chemical components of the natural materials are transferred to the fabric samples. It has been proven by the test results that all cotton fabric samples are given high strength, UV protection, flammability, high abrasion resistance and low air permeability. Interpretation of all the analysis and obtained test results has been also made statistically. According to the study results, ecofriendly process step has been created that allows low energy cost and low chemical usage under low temperatures

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Thermal dehydration of colemanite: kinetics and mechanism determined using the master plots method

Cited by 14 publications

References 43 publications

Thermal Degradation of Particleboards Incorporated with Colemanite and Common Boron-based Fire Retardants

Thermal Degradation of Particleboards Incorporated with Colemanite and Common Boron-based Fire Retardants

Pyrolytic Degradation Behavior of Biomass Seeds: Cherry And Peach Seed

A new finishing process of cotton fabric

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