نتایج جستجو برای: boehmite nanoparticles

تعداد نتایج: 107391  

Journal: :Applied Petrochemical Research 2021

Abstract In the present study, high surface area boehmite nanopowder was recovered from aluminum cans waste. The sodium aluminate solution first prepared by dissolving in NaOH and then, H 2 O added to precipitate boehmite. characterized means of X-ray diffraction (XRD), transmission electron microscopy (TEM) N adsorption–desorption techniques. thermal stability sample investigated using thermog...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی موادو متالورژی 1386

اهمیت اسپینل به عنوان یک فاز مناسب در ریزساختار دیر گدازها، تلاش های گسترده ای را برای تشکیل این فاز در ده های پایین تر و به مقدار بیشتر به همراه داشته است. از طرف دیگر گسترش روز افزون علم نانو در صنایع مختلف به عنوان پتانسیلی برای مطالعه رفتار دیر گدازها در حضور ذرات نانو مورد توجه قرار گرفت و به این ترتیب در این پژوهش نانوبوهمیت به عنوان افزودنی مناسب برای تشویق تشکیل اسپینل در دماهای پایین ت...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2004
Tae Hyun Yoon Stephen B Johnson Karim Benzerara Colin S Doyle Tolek Tyliszczak David K Shuh Gordon E Brown

In situ characterization of colloidal particles under hydrous conditions is one of the key requirements for understanding their state of aggregation and impact on the transport of pollutants in aqueous environments. Scanning transmission X-ray microscopy (STXM) is one of the few techniques that can satisfy this need by providing element- and chemical-state-specific 2-D maps at a spatial resolut...

In this study a label-free electrochemical Immunosensor for ultrasensitive detection of Hepatitis C virus core antigen in serum samples was fabricated by using a simple approach. In this method a low-cost and sensitive immunosensor was fabricated based on a boehmite nanoparticles (BNPs) modified glassy carbon. The BNPs provide a specific platform with increased surface area which is capable of ...

Journal: :Catalysts 2022

Graphene-encapsulated nickel nanoclusters are a feasible strategy to inhibit the deactivation of nickel-based catalysts. In this work, graphene-encapsulated catalysts (Ni@C/HZSM-5) were prepared by compression forming process, using pseudo-boehmite, Al2O3, and ZrO2 as binders. The pseudo-boehmite was gradually transformed from amorphous crystalline alumina at high temperatures, which destroyed ...

Journal: :Ceramics International 2021

The present work analyses a set of cylinders manufactured by pressing and fired from 1000 °C to 1270 °C, which are composed pure Al-rich rocks (bauxite) mixtures bauxite with Al–K-rich clays. aim the study is determine mineral textural transformations that take place in firing their influence on physical properties final products order evaluate refractory potential comparing them various commer...

A palladium composite membrane was prepared via electroless plating technique using organic-inorganic method during activation process. The ceramic support surface was modified by two TiO2-boehmite and one γ-alumina layers to avoid Pd penetration in support pores. Thin and defect-free Pd composite membrane was obtained by creating a relative smoothness on the ceramic support and using Pd nanopa...

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