ALTERNATIVE ENERGY STORAGE KEY COMPONENT TRIMETHYL BORATE: SYNTHESIS, DEHYDRATION AND KINETIC PARAMETERS
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Tarih
2015
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Turkish Soc Thermal Sciences Technology
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The aim of this study was to investigate effects of dehydrants on the trimethyl borate reaction and determine the kinetic parameters. Thus, trimethyl borate was produced by reacting of boric acid with methyl alcohol in a rotary evaporator. Evaporator was programmed to operate at 65 degrees C temperature and 150 rpm. Formed water at this reaction affects the reaction rate and trimethyl borate formation, negatively. Therefore, water is necessary to be removed from the reaction media. Kinetic search of the process gives reaction rate and rate constant as, pseudo first order and 0.0613 min(-1), respectively. Consequently, the rate equation can be mentioned as r=0,0613 C-B(OCH3)3. Since the capacity and intensity properties changed with dehydrant type, various dehydrants at different amounts should be tested in the reaction. For this purpose CaCl2 and LiCl were used as dehydrant in the reactor, separately. During the reaction, trimethyl borate was distilled in the form of an azeotrope with methanol. LiCl salt was also used to separate azeotrope into two layers. Top layer was rectified and determined as trimethyl borate compound by using GC-MS instrument. In addition, purity of trimethyl borate was determined by titrimetric method.
Açıklama
Anahtar Kelimeler
trimethyl borate, calcium chloride, lithium chloride, rate equation
Kaynak
Isi Bilimi Ve Teknigi Dergisi-Journal Of Thermal Science And Technology
WoS Q Değeri
N/A
Scopus Q Değeri
Cilt
35
Sayı
1
