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Article
Hydroisomerization and Hydrocracking of n-Heptane over Nanoporous Trimetallic (Pt-Ni-Co/SBA-15 Catalyst)
عملية ألأزمرة والتكسيرالحراري للهبتان الاعتيادي فوق العامل المساعد النانوي المسامي ثلاثي المعادن Pt-Ni-Co/SBA-15))

Authors: Talib M.Albayati --- Aidan M. Doyle
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2013 Volume: 31 Issue: 18 Part (A) Engineering Pages: 36-52
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

The heterogeneous hydroisomerization and hydrocracking of n-heptane was carried out within the pores of the mesoporous SBA-15 silicas, within which was encapsulated trimetallic nanoparticles of Pt-Ni-Co. The structural and textural features of the nanoporoussilicas, both with and without encapsulated nanoparticles, were characterised using small angle X-ray diffraction, scanning electron microscopy (SEM), EDAX, nitrogen adsorption-desorptionporosimetry/BET surface area analysis,Fourier-transform infrared (FTIR) spectroscopyand transmission electron microscopy (TEM).Catalytic testing was conducted using a plug-flow reactor in a catalyst testing rig under tightly controlled conditions of temperature, reactant flow rate and pressure.Species were leaving the reactor andanalysed by Gas Chromatography. The results show thatPt-Ni-Co/SBA-15 had a high activity for conversion of n-heptane (around 85%). The catalyst was found to be stable to heating and did not undergo any significant deactivation during reaction at temperatures up to 400 °C.

ان عملية الازمرة والتكسير الحراري للهبتان الاعتيادي في تفاعلات غير متجانسة (متباينة) الاطوار وبوجود العامل المساعد قد حدثت ضمن مسامات المادة النانوية المسامية SBA-15 التي تم حشوتها بجسيمات او جزيئات المعادن النانوية الثلاثية 1% (البلاتين-النيكل-الكوبلت). ان تركيب المادة النانوية المسامية SBA-15 ومميزات السطح الخارجي لها تم دراستها بواسطة الاشعة السينية XRD بالاضافة الى دراسة المسح الالكتروني المجهريSEM وتحليل نسبة العناصرEDAX. وكما تم قياس المساحة السطحية وقطر المسامات بواسطة غاز النيتروجين بعملية الامدصاص وازالة الامدصاصBET . بالاضافة الى قياس المجاميع الفعالةFT-IR وكذلك تم استخدام المجهر الالكتروني الناقل (TEM). ان جميع هذه الخصائص تم دراستها قبل وبعد عملية التحميل بالمعادن.ان عملية اختبار العامل المساعد قد اجريت في المفاعل الانبوبي وفي ظروف مسيطرة عليها مثل الضغط ، درجة الحرارة، ومعدل التدفق. النتائج اظهرت ان فعالية تقييم العامل المساعد في المفاعل الانبوبي توحي بان المعادن الثلاثية المحملة 1% (Pt-Ni-Co)/SBA-15 لها فعالية عالية اثناء تحويل الهبتان الاعتيادي بحدود 85% في المفاعل الانبوبي.اوجدت النتائج استقرارية العامل المساعد للتسخين ولم يخضع لاي عملية تعطيل مؤثرة في درجة حرارة التفاعل لحد 400 درجة مئوية.


Article
Biosorption Technique for Naphthalene Removal from Aqueous Solution By Chara sp., Algae

Authors: Talib M. Albayati --- Khairi R. Kalash
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2018 Volume: 36 Issue: 9 Part (A) Engineering Pages: 1008-1015
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

These instructions give guidelines for preparing the article to be published in the Engineering& Technology Journal using MS World 7.0 or later. A short abstract should open the paper and give a clear indication of the aims, scope and the main results of the paper. The reader may decide from the abstract that the full text is of particular interest or not. The author should consider that the abstract is an indication of the scope of the topic and the obtained results and not a way of condensing the problem in a few words for quick reading. It should be no more than 200 words. It is placed under the title with a single space from the title. The paper titles should be concise and definitive. The length of the title should not exceed three lines. The abbreviations and formulae should be avoided. Papers titles should be written in uppercase and lowercase letters, not all uppercase. Capitalize the words of the paper title. Avoid writing a long formula and define all symbols used in the abstract and do not cite the references here.


Article
Removal of Cobalt (Co(II)) from Aqueous Solution by Amino Functionalized SBA-15

Authors: Anaam A. Sabri --- Talib M. Albayati --- Dalia B. Abed
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2018 Volume: 36 Issue: 7 Part (A) Engineering Pages: 703-708
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Mesoporous silica SBA-15 material was synthesized and functionalized by post synthesis method with amino functional group (3-aminopropyltriethoxysilane) to investigate its potential use as an adsorbent for cobalt (Co(II)) removal from aqueous solution. Several characterization methods were used for identifying the material characteristics before and after functionalization, such as X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy. Batch adsorption experiments were conducted and different variables that affected the removal of cobalt ions were studied, such as pH (1-6), contact time (0-150min), initial concentration (20-120mg/L) and adsorbent dose (0.025-0.3g). It was found that amino functional group was very effective in increasing the percentage removal of (Co(II)) as compared with non-functionalized SBA-15. The percentage removal of these ions were increased with the increasing of pH (up to 5), contact time and NH2-SBA-15 dose, while the increase of the initial concentration of Co(II) ions led to decrease in it.


Article
Kinetics and Mass Transfer Study of Oleic Acid Esterification over Prepared Nanoporous HY zeolite

Authors: Ammar S. Abbas --- Talib M. Albayati --- Ziad T. Alismaeel --- Aidan M. Doyle
Journal: Iraqi Journal of Chemical and Petroleum Engineering المجلة العراقية للهندسة الكيمياوية وهندسة النفط ISSN: 19974884/E26180707 Year: 2016 Volume: 17 Issue: 1 Pages: 47-60
Publisher: Baghdad University جامعة بغداد

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Abstract

A mathematical model was proposed to study the microkinetics of esterification reaction of oleic acid with ethanol over prepared HY zeolite catalyst. The catalyst was prepared from Iraqi kaolin source and its properties were characterized by different techniques. The esterification was done under different temperature (40 to 70˚C) with 6:1 for molar ratio of ethanol to oleic acid and 5 % catalyst loading. The microkinetics study was done over two period of time each period was examined individually to calculate the reaction rate constant and activation energy. The impact of the mass transfer resistance to the reactant was also investigated; two different studies have been accomplished to do this purpose. The effect of the external mass transfer resistance was studied by exploring different stirring speed (400 to 800 rpm). The results show that, the oleic acid conversion increase with increasing the stirring speed until reached 600 rpm, after this rpm the conversion doesn’t increase significantly, which mean that, the effect of external mass transfer resistance was eliminated. The activation energy for the first period is equal to 41.84 kJ/mol while in the second period is equal to 52.03 kJ/mol. The Thiele modulus calculation results show that there is no effect of mass transfer on the reaction inside the catalyst pores.


Article
Experimental Study of Drug Delivery system for Prednisolone Loaded and Released by Mesoporous Silica MCM-41
دراسة تجريبية لنظام توصيل دواء البريدنيزولون المحمل والمحرر من قبل السليكا MCM-41

Authors: Abd Alkadir A. Jassam عبدالقادر عبدالامير جسام --- Talib M. Albayati طالب محمد البياتي
Journal: Al-Khwarizmi Engineering Journal مجلة الخوارزمي الهندسية ISSN: 18181171 23120789 Year: 2019 Volume: 15 Issue: 1 Pages: 117-124
Publisher: Baghdad University جامعة بغداد

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Abstract

In the present study, nanoporous material type MCM-41 was prepared by the sol-gel technique and was used as a carrier for prednisolone (PRD) drug delivery. The structural properties of mesoporous were fully characterized by X-ray diffraction (XRD), N2 adsorption /desorption and Fourier-transform infrared (FTIR). The mass transfer in term of adsorption process (loading) and desorption process (releasing) properties were investigated. The maximum drug loading efficiency was equal to 38% and 47.5% at different concentrations. The PRD released was prudently studied in water media of pH 6.8 simulated body fluid (SBF) in according to "United State Pharmacopeia (USP38)". The results proved that the release of prednisolone from MCM-41 was (69.4%) after 24 hr. The data of the released PRD was found to be submitted to a Korsmeyer–Peppas model.

في هذه الدراسة ، حضرت المادة النانوية نوع MCM-41 بوساطة تقنية sol-gel واستخدمت ناقلا لتوصيل دواء بريدنيزولون. خصائص هيكل المادة النانوية تم توصيفها بالكامل عن طريق حيود الأشعة السينية (XRD) ، N2 امتزاز / الامتصاص و جهاز مطياف الاشعة تحت الحمراء FTIR . تم تحقيق خصائص انتقال الكتلة في عملية الامتزاز (التحميل) و عكس عملية الامتزاز (التحرر). كانت كفاءة تحميل الدواء القصوى (38 ٪ و 47.5 ٪) في تراكيز مختلفة. تمت دراسة تحرر دواء البردنيزولون بعناية في الوسط المائي من سوائل الجسم المحاكية (SBF) عند الاس الهيدروجيني ذي القيمة 6.8 وعلى وفق الولايات المتحدة للأدوية ووجد أن تحرر دواء بريدنيزولون من MCM-41 كان (69.4 ٪) بعد 24 ساعة . بيانات تحرر PRD وجدت انها تخضع لمعادلة .Korsmeyer – Peppas


Article
Mesoporous Silica MCM-41 as a Carriers Material for Nystatine Drug in Delivery System
السليكا المساميَة MCM-41 مادة ناقلة لعلاج النستاتين لنظام تسليم الدواء

Authors: Ali M. AlKafajy طالب محمد البياتي --- Talib M. Albayati علي محمد حمزه الخفاجي
Journal: Al-Khwarizmi Engineering Journal مجلة الخوارزمي الهندسية ISSN: 18181171 23120789 Year: 2019 Volume: 15 Issue: 2 Pages: 34-43
Publisher: Baghdad University جامعة بغداد

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Abstract

In the present study, MCM-41 was synthesis as a carrier for poorly drugs soluble in water, by the sol-gel technique. Textural and chemical characterizations of MCM-41 were carried out by X-ray diffraction (XRD), Fourier transform infrared (FTIR), scanning electron microscope (SEM), and thermal gravimetric analysis (TGA). The experimental results were analyzed mesoporous carriers MCM-41. With maximum drug loading efficiency in MCM-41 determined to be 90.74%. The NYS released was prudently studied in simulated body fluid (SBF) pH 7.4 and the results proved that the release of NYS from MCM-41 was (87.79%) after 18 hr. The data of NYS released was found to be submitted a Weibull model with a correlation coefficient of (0.995). The Historical data experimental design facilitated the formulation and optimization of sustained discover the optimal formulation to loading drug, combine process variables, mixture components and categorical factors in one design.

في هذه الدراسة ، حضرت المادة النانوية المسامية MCM-41 بوصفها ناقلات للأدوية سيئة للذوبان في الماء ، من خلال تقنية sol-gel. أجريت التوصيفات التركيبية والكيميائية لـ MCM-41 بوساطة حيود أشعة السينية (XRD)، وجهاز فورير بالأشعة تحت الحمراء (FTIR) ، ومسح المجهر الإلكتروني (SEM) ، والتحليل الوزني الحراري (TGA). تم تحليل النتائج التجريبية للناقل MCM-41 مع الحد الأقصى لفعالية تحميل دواء النستاتين في MCM-41 وتبين ان كفاءة التحميل 90.74 ٪. وتم دراسة اطلاق علاج النستاتين المحمل بشكل حذر في سائل يحاكي جسم الانسان (SBF) عند الاس الهيدروجيني ذو القيمة 7,4 وأثبتت النتائج أن اطلاق العلاج من MCM-41 كان (87.79٪) بعد 18 ساعة. بيانات تحرر NYS وجدت انها تخضع لمعادلة weibull وكان معامل التصحيح (0.995). سهّل التصميم التجريبي للبيانات صياغة وتحسين الصيغة المثلى لتحميل الدواء ، وجمع المتغيرات

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