نتایج جستجو برای: carbonization

تعداد نتایج: 2338  

2014
Muhammad Ali Tasrina Rabia Choudhury Babul Hossain Md Panna Ali

An Energy Dispersive X-ray Fluorescence (EDXRF) method using X-ray emitting isotopes in combination with pre-concentration by carbonization was developed to determine the levels of Mo and Pb accumulated in foods. The samples were carbonized at temperatures range of 150-400°C for 15 min to 2 h for powdering. The powder was then quickly formed into a pellet for EDXRF analysis. This analytical met...

2002
N. K. GHOSH

Production of iron through BF route is still a dominant route and coke is a major raw material and energy source for the blast furnaces. The process of coal carbonization in slot ovens is one of the major sources of atmospheric pollution in an Integrated Steel Plant. Coke making process involves coal preparation, carbonization and coke handling operations. To meet the demand of Blast Furnaces o...

2016
Dagang Song Kaiwen Pan Akash Tariq Azizullah Azizullah Feng Sun Zilong Li Qinli Xiong

Environmental pollution with heavy metals is a serious issue worldwide posing threats to humans, animals and plants and to the stability of overall ecosystem. Chromium (Cr) is one of most hazardous heavy metals with a high carcinogenic and recalcitrant nature. Aim of the present study was to select low-cost biosorbent using wheat straw and Eupatorium adenophorum through simple carbonization pro...

Journal: :Physical chemistry chemical physics : PCCP 2015
Myeongjin Kim Ilgeun Oh Jooheon Kim

Three-dimensional silicon carbide-based frameworks with hierarchical micro-, meso-, and macroporous structures (3MPSiC) were prepared by a template method with subsequent carbonization via an aerosol spray drying method. The micropores were derived from partial vaporization of Si atoms during the carbonization process, whereas the meso- and macropores were generated by self-assembly of the stru...

2016
Jacek Matys Rafał Flieger Marzena Dominiak

The most common adverse effect after bone cutting is a thermal damage. The aim of our study was to evaluate the bone temperature rise during an alveolar ridge splitting, rating the time needed to perform this procedure and the time to raise the temperature of a bone by 10°C, as well as to evaluate the bone carbonization occurrence. The research included 60 mandibles (n = 60) of adult pigs, divi...

2014
D. Kalderis M. S. Kotti A. Méndez G. Gascó

Biochar is the carbon-rich product obtained when biomass, such as wood, manure or leaves, is heated in a closed container with little or no available air. In more technical terms, biochar is produced by so-called thermal decomposition of organic material under limited supply of oxygen (O2), and at relatively low temperatures (< 700 C). Hydrochar differentiates from biochar because it is produce...

Journal: :ACS applied materials & interfaces 2013
Xiaoyun He Ekaterina P Nesterenko Pavel N Nesterenko Dermot Brabazon Lin Zhou Jeremy D Glennon John H T Luong Brett Paull

A novel hierarchical nanotemplated carbon monolithic rod (NTCM) was prepared using a novel facile nanotemplating approach. The NTCM was obtained using C60-fullerene modified silica gels as hard templates, which were embedded in a phenolic resin containing a metal catalyst for localized graphitization, followed by bulk carbonization, and template and catalyst removal. TEM, SEM, and BET measureme...

Journal: :Current opinion in chemical engineering 2023

Carbon molecular sieve membranes (CMSMs) are inorganic produced by carbonization of a thermosetting polymer. The selection the adequate polymer, conditions and post-carbonization treatment allow production large variety porous structures. mass transport species through these structures is not easy to model in detail. This review reports last developments field CMSMs. membrane also briefly touch...

2015
Shelby Taylor Mitchell Natalie Frese Amanda Bowers Klaus Sattler

We report experimental studies of carbon nanofoam produced using a hydrothermal autoclave reactor with a sucrose solution and a small added amount of naphthalene. The foam has an average density of 85 mg/cc and is uniform in its appearance. He-ion microscopy (HeIM), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) were used to characterize the foam samples. These show good consiste...

Journal: :ACS nano 2016
Feng Zhou Wei Sun Karen B Ricardo Dong Wang Jie Shen Peng Yin Haitao Liu

DNA nanostructures are versatile templates for low cost, high resolution nanofabrication. However, due to the limited chemical stability of pure DNA structures, their applications in nanofabrication have long been limited to low temperature processes or solution phase reactions. Here, we demonstrate the use of DNA nanostructure as a template for high temperature, solid-state chemistries. We sho...

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