synthesize and characterization of aminosilane functionalized mcm-41 for removal of anionic dye: kinetic and thermodynamic study
نویسندگان
چکیده
in this study, removal of acid blue 62 from aqueous solution by mesoporous silicate mcm-41 modified by aminopropyltriethoxysilane (aptes) composite was studied. properties of synthesized composite were analyzed and confirmed by sem, edx and ftir. results show that langmuir adsorption isotherm has the best compatibility with the results of experiments. kinetic analysis using pseudo-first-order model, pseudo-second-order and the intra-particle diffusion model was carried out. results also confirmed that adsorption process is compatible with the pseudo-second-order kinetic model. thermodynamic parameters such as gibbs free energy changes (δgo), enthalpy changes (δho) and entropy changes (δso) were calculated. negative value of δgo and positive value of δho show that adsorption of acid blue 62 on aminated nanocomposite is a spontaneous process also endothermic.
منابع مشابه
Synthesize and characterization of Aminosilane functionalized MCM-41 for removal of anionic dye: Kinetic and thermodynamic study
In this study, removal of Acid blue 62 from aqueous solution by mesoporous silicate MCM-41 modified by Aminopropyltriethoxysilane (APTES) composite was studied. Properties of synthesized composite were analyzed and confirmed by SEM, EDX and FTIR. Results show that Langmuir adsorption isotherm has the best compatibility with the results of experiments. Kinetic analysis using pseudo-first-order m...
متن کاملSynthesize and characterization of Aminosilane functionalized MCM-41 for removal of anionic dye: Kinetic and thermodynamic study
In this study, removal of Acid blue 62 from aqueous solution by mesoporous silicate MCM-41 modified by Aminopropyltriethoxysilane (APTES) composite was studied. Properties of synthesized composite were analyzed and confirmed by SEM, EDX and FTIR. Results show that Langmuir adsorption isotherm has the best compatibility with the results of experiments. Kinetic analysis using pseudo-first-order m...
متن کاملpreparation and characterization of new co-fe and fe-mn nano catalysts using resol phenolic resin and response surface methodology study for fischer-tropsch synthesis
کاتالیزورهای co-fe-resol/sio2و fe-mn-resol/sio2 با استفاده از روش ساده و ارزان قیمت همرسوبی تهیه شدند. از رزین پلیمری resol در فرآیند تهیه کاتالیزور استفاده شد.
Kinetic studies of Pb and Ni adsorption onto MCM-41 amine-functionalized nano particle
In the current investigation a novel nano hybrid adsorbent MCM-41/N-(3-trimethoxysilyl)-propyl)diethylenetriamine (MCM-41/TMSPDETA) was prepared and was characterized using DLS (Dynamic Light Scattering), Fourier Transform Infrared (FTIR), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analytical techniques and Transmission electron microscopy (TEM). The synthesized MCM-41/TMSPDETA adsor...
متن کاملthe study of practical and theoretical foundation of credit risk and its coverage
پس از بررسی هر کدام از فاکتورهای نوع صنعت, نوع ضمانت نامه, نرخ بهره , نرخ تورم, ریسک اعتباری کشورها, کارمزد, ریکاوری, gdp, پوشش و وثیقه بر ریسک اعتباری صندوق ضمانت صادرات ایران مشخص گردید که همه فاکتورها به استثنای ریسک اعتباری کشورها و کارمزد بقیه فاکتورها رابطه معناداری با ریسک اعتباری دارند در ضمن نرخ بهره , نرخ تورم, ریکاوری, و نوع صنعت و ریسک کشورها اثر عکس روی ریسک اعتباری داردو پوشش, وثی...
15 صفحه اولstudy and characterization of fiber optical gyroscope مطالعه و مشخصه یابی ژیروسکوپ فیبر نوری(تار نوری)
ژیروسکوپ فیبر نوری fog بر اساس پدیده تداخل ساگنام دو پرتو لیزری از یک فیبر نوری بسیار طولانی داده های لازم را فراهم می آورد
15 صفحه اولمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
international journal of nano dimensionجلد ۷، شماره ۴، صفحات ۲۹۵-۳۰۷
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023