نتایج جستجو برای: al2o3 nano

تعداد نتایج: 61921  

Journal: :Chemical Industry & Chemical Engineering Quarterly 2023

In the present paper, a gamma alumina (?-Al2O3) loaded zinc oxide (ZnO) nano-catalyst (ZnO/?-Al2O3) has been synthesized and used to accelerate removal of sulfur compounds from light gas oil by oxidative desulfurization (ODS) process. The nano-catalysts have characterized atomic force microscopy (AFM) Brunauer-Emmett-Teller (BET). ODS process conducted in batch reactor at various reaction tempe...

Journal: :Sensors and Actuators A-physical 2021

Semiconducting metal oxide - based gas sensors exhibit outstanding sensitivity, although humidity in the analyte typically hampers precise measurements. In this work it was shown that a 5?6 nm thin Al2O3 nano-layer is particularly beneficial reducing interference due to of p-type conductivity copper oxide-based sensors. An effective approach from chemical solutions at 75 °C and thermal annealin...

Journal: :international journal of environmental research 2015
m. asztemborska r. steborowski j. kowalska g. bystrzejewska-piotrowska

accumulation of aluminium by plants exposed to nano- and microsized particles of al2o3 wasinvestigated in terms of risk assessment and possible application in phytoremediation of contaminated sites.four plant species (allium cepa l., zea mays, lepidium sativum and kalanchoe daigremontiana)were cultivatedon media (soil or liquid medium) contaminated with nano- and microparticles of al2o3. bioava...

2007
I. Brunets A. Boogaard J. Schmitz

In this work, the low-temperature process steps required for the realization of nano-crystal non-volatile memory cells are discussed. An amorphous silicon film, crystallized using a diode pumped solid state green laser irradiating at 532 nm, is proposed as an active layer. The deposition of the subsequent functional layers (e.g., gate oxide) can be done using CVD and ALD reactors in a cluster t...

Journal: :Politeknik dergisi 2021

In this experimental study, the results of utilizing a nano-lubricant in place compressor work fluid refrigeration system were examined. R134a refrigerant was utilized system. Polyol ester (POE) used as base and prepared from alumina oxide (Al2O3) nanoparticles utilized. The experiments carried out separately with nano-lubricants created by mixing Al2O3 ratios 0.5% 1.0% into POE oil. Additional...

Journal: :Sustainability 2023

Epoxy resin is extensively used in gas insulated switches as a renewable energy coating due to its exceptional insulation, mechanical characteristics, and environmental friendliness. The higher resistivity of the epoxy causes numerous surface charges accumulate on result carrier injection high DC electric field, which may cause insulation failure power transmission system. In this study, variou...

Journal: :مهندسی متالورژی و مواد 0
نسیبه ولی بیگلو رسول آذری خسروشاهی

using the nanotechnology and decreasing the dimension of reinforcement particles to nanometer, outstanding mechanical properties are achieved in aluminum matrix nanocomposites. fabrication of aluminum matrix nanocomposites by casting is of great importance because of its simplicity, low cost and ease of the control of matrix microstructure. in this study, the aging behavior of nanocomposite sam...

ژورنال: شیمی کاربردی 2018

در این مقاله تبدیل فروکتوز به عنوان مشتقی از زیست توده به ترکیب 5-هیدروکسی تیل فورفورال با استفاده از کاتالیزور آلومینای سولفونه شده بررسی شده است. جهت تهیه کاتالیزورها، γ-Al2O3 و nano-γ-Al2O3 توسط کلرو سولفونیک اسید، سولفونه شدند. کاتالیزورهای تولید شده توسط روش‌های FT-IR، TEM، SEM، BET و TGA شناسایی شد. در این پژوهش تأثیر پارامترهایی مانند نوع کاتالیزور، نوع حلال، مدت زمان واکنش و غلظت فروکتو...

Journal: :international journal of nanoscience and nanotechnology(ijnn 0
md abdus subhan department of chemistry, shah jalal university of science and technology, sylhet, bangladesh

the mixed metal nanocomposite mgo∙al2o3∙zno has been prepared by coprecipitation method. the product was characterized by xrd. the average particle size was found to be 34.89 nm from xrd data. sem and sem-eds were studied for evaluating surface morphology and elemental composition. the ftir spectrum of prepared mixed metal nanocomposites mgo∙al2o3∙zno and mgo∙al2o3∙zno-curcumin were studied. th...

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