نتایج جستجو برای: hydrogen peroxide decomposition

تعداد نتایج: 247531  

Journal: :The Journal of General Physiology 2003
John Williams

1. The velocity of decomposition of hydrogen peroxide by catalase as a function of (a) concentration of catalase, (b) concentration of hydrogen peroxide, (c) hydrogen ion concentration, (d) temperature has been studied in an attempt to correlate these variables as far as possible. It is concluded that the reaction involves primarily adsorption of hydrogen peroxide at the catalase surface. 2. Th...

ژورنال: Medical Laboratory Journal 2014
Nabizadeh, R, Naddafi, K, Sadeghi, M,

Abstract Background and Objective: Perchloroethylene (PCE) is a chlorinated hydrocarbon used as a solvent in many industrial processes. In contaminated water and soil a great deal of PCE is found. This study aimed to determine the rate of decomposition of PCE occurred after advanced oxidation. Material and Methods: In this descriptive-analytic study conducted (2011) in public health faculty...

In this research iron manganese oxide nanocomposites were prepared by co-precipitation, sol-gel and mechanochemical methods by using iron (III) nitrate, iron (II) sulfate and manganese (II) nitrate as starting materials. These nanocomposites were prepared in the presence of various catalyst beds. The polyvinyl pyrrolidon (PVP) was used as a capping agent to control the agglomeration of the nano...

Journal: :Juntendo Medical Journal 2004

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

in this research iron manganese oxide nanocomposites were prepared by co-precipitation, sol-gel and mechanochemical methods by using iron (iii) nitrate, iron (ii) sulfate and manganese (ii) nitrate as starting materials. these nanocomposites were prepared in the presence of various catalyst beds. the polyvinyl pyrrolidon (pvp) was used as a capping agent to control the agglomeration of the nano...

2013
CARL HOUTMAN KOLBY HIRTH

When hydrogen peroxide is mixed with caustic soda, an auto-accelerating reaction can lead to gen­ eration of significant amounts of heat and oxygen. On the basis of experiments using typical pulp mill process con­ centration and temperatures, a relatively simple kinetic model has been developed. Evaluation of these model results reveals that hydrogen peroxide-caustic soda systems are extremely ...

In this research iron manganese oxide nanocomposites were prepared by co-precipitation, sol-gel and mechanochemical methods by using iron (III) nitrate, iron (II) sulfate and manganese (II) nitrate as starting materials. These nanocomposites were prepared in the presence of various catalyst beds. The polyvinyl pyrrolidon (PVP) was used as a capping agent to control the agglomeration of the nano...

Journal: :The journal of physical chemistry. A 2011
M J Loeffler R A Baragiola

We present a new method of growing pure solid hydrogen peroxide in an ultra high vacuum environment and apply it to determine thermal stability of the dihydrate compound that forms when water and hydrogen peroxide are mixed at low temperatures. Using infrared spectroscopy and thermogravimetric analysis, we quantified the isothermal decomposition of the metastable dihydrate at 151.6 K. This deco...

ژورنال: طلوع بهداشت یزد 2013
سردار, مهدیه , شیخ محمدی, امیر , منشوری, محمد , یزدانبخش, احمدرضا,

  Background: 4-Chlorophenol is used frequently in industries including refineries petrochemical, industries pesticide industries and many others. This compound causes damage to environment. The purpose of this research was the survey of 4-chlorophenole degradation by Fe°/H2O2 of synthetic wastewater and resulting intermediate compounds.   Methods: This study is an applied- experimental researc...

ژورنال: مواد پرانرژی 2015

Mixed spinel nanocrystals have captured the attention of scientist in the field for their catalytic activity in decomposition of hydrogen peroxide. In this study nanocatalysts MnFe2O4, Co3O4, Pb3O4, Co0.5Zn0.5Fe2O4 and Co0.5Mn0.5Fe2O4 were synthesized by co-precipitation method. The synthetic samples were characterized by XRD patterns, SEM images and IR spectroscopy. The size of the nanoparticl...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید