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Register a new userProtect the electrodes electrochemical electrolyze to produce hydrogen using polymeric materials
حماية الكترودات محللة كهروكيميائية لانتاج الهيدروجين باستخدام المواد البوليميرية
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Aِl-Baath University ورقة بحثية
Publication date
2016
fields
Technical Architecture
and research's language is
العربية
Created by
Shamra Editor
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هذا البحث يركز على استخدام مواد جديدة لها قدرة العمل كمضاد تآكلي لحل المشاكل المتعلقة بالكترودات محملات انتاج الهيدروجين. خاصة و ان معظم المحملات يعتمد على استخدام الكترودات غالية الثمن.
This research focuses on the use of new materials have the ability to act as an anti-corrosion for the resolution of problems relating to electrodes analyzers the production of hydrogen. Especially that most analyzers based on the use of electrodes are expensive.
Artificial intelligence review:
Research summary
يركز هذا البحث على استخدام مواد جديدة تعمل كمضاد للتآكل لحل المشاكل المتعلقة بالكترودات محللات إنتاج الهيدروجين. تم استخدام الكترودات من الستانلس ستيل مع مواد بوليميرية مثل البولي فينيل الكحولي (PVA) وحمض الأكريليك (AAC) والبولي إيثيلين غليكول (PEG) كمثبطات للتآكل. أظهرت النتائج أن كفاءة المثبط تصل إلى 97% عند تركيز 3mg/l من المادة البوليميرية. تمت دراسة العلاقة بين زمن تشغيل المحللة وإنتاجية الغاز قبل وبعد إضافة المادة البوليميرية، وأظهرت النتائج أن إضافة 3mg من المادة البوليميرية تحسن أداء المحللة وتزيد من إنتاجية الغاز وتمنع تسمم الوسيط الكهرليتي.
Critical review
دراسة نقدية: يقدم البحث حلاً مبتكراً لمشكلة تآكل الكترودات محللات إنتاج الهيدروجين باستخدام مواد بوليميرية رخيصة وفعالة. ومع ذلك، يمكن تحسين البحث من خلال تقديم تفاصيل أكثر حول آلية التفاعل بين المواد البوليميرية والالكترودات. كما أن الدراسة لم تتناول بشكل كافٍ تأثير العوامل البيئية المختلفة على كفاءة المثبطات، وهو ما يمكن أن يكون له تأثير كبير في التطبيقات العملية.
Questions related to the research
-
ما هي المواد البوليميرية المستخدمة في البحث كمثبطات للتآكل؟
تم استخدام البولي فينيل الكحولي (PVA) وحمض الأكريليك (AAC) والبولي إيثيلين غليكول (PEG) كمثبطات للتآكل.
-
ما هي كفاءة المثبط المستخدم في البحث؟
كفاءة المثبط تصل إلى 97% عند تركيز 3mg/l من المادة البوليميرية.
-
كيف تؤثر المادة البوليميرية على إنتاجية الغاز في المحللة؟
إضافة 3mg من المادة البوليميرية تحسن أداء المحللة وتزيد من إنتاجية الغاز وتمنع تسمم الوسيط الكهرليتي.
-
ما هي التوصيات التي قدمها البحث لتحسين أداء المحللات التي تعاني من مشاكل تآكل الأقطاب؟
يوصي البحث بإضافة 3mg من المادة البوليميرية الجديدة إلى المحللات التي تعاني من مشاكل تآكل الأقطاب لزيادة إنتاجية الغاز ومنع تسمم الوسيط الكهرليتي.
References used
Chunshan Soug "Overview of Hydrogen production options for Hydrogen energy development, fuel-cell fuel processing and mitigation of CO2emissions" Proc. 20th international Pittsburgh coal conference, step. 15-19, 2003, Pittsburgh, pa, USA paper No. 3-40
Eric Goodger and Ray Vere "Avitiation fuels technology" Higher and further education division, Macmillan publishers ltd 1985
Argonne national laboratory "Basic research needs for solar energy utilization" Report of the basic energy science workshop on solar energy utilization April 18-21, 2005
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Hydrogen production, vector of energy, by water electrolysis can be economically
viable by using electrical energy from renewable sources such as photovoltaic solar
energy. In this research was the study of solar hydrogen production using electroly
ser
based on polymeric exchange membrane electrolysis technology manufactured locally at
the Faculty of Technical Engineering in Tartous. The experimental studies were achieved
in two different methods: the first, direct coupling to the hydrogen electrolyser with PV
module. The second method, designed PV-electrolyzer system consists of the following
components: PV module, a maximum power point tracker (MPPT), A DC-DC converter,
which is used to operate the system at the maximum power of the PV system at all times
and to supply the necessary DC current to the electrolyzer, and tank hydrogen. The results
showed that the second method more effective and highly efficient when compared with
the first method because of the change in the intensity of solar radiation during the day.
Also, results show that some additives such as (KOH) play an important role in enhancing
the ionization process of the electrolyte liquid and improve process flow.
In this research, the electrochemical reduction of hydrogen process
and the factors affecting the reduction potential have been studied
in this research. The effect of acid concentration on the shifting of
the volt-ampero-metric curves that expres
s the reduction process
and so its effect on both the reduction potential value of hydronium
ions on drop mercury electrode, and the speed value of reduction
reaction was studied. Then an amount of pyridine as organic
substance was added to a specific volume of acid in a specific
concentration to figure out the relationship between the amount of
pyridine added and the cathode current of the reaction to find out
the effect of added pyridine on the reaction speed and the
relationship between the amount of added pyridine and the
hydrogen reduction potential.
Pyridine was added to amount of acid to study the effect of
theaddition on the hydrogen reduction over potential.
A protection Method for the primary loops metals of nuclear power plant
from corrosion was investigated. Hydrogen molecules were added to the
primary circuit to eliminate oxygen molecules produced by radiolysis of coolant
at the reactor core. The
hydrogen molecules were produced by electrolyses of
water and then added when the coolant water was passing through the primary
coolant circuit.
Thermodynamical process and the protection methods from corrosion were
discussed, the discussion emphasized on the removal of oxygen molecules as one
of the protection methods, and compared with other methods .The amount of
hydrogen molecules needed for complete removal of oxygen was estimated in
two cases: in the case without passing the water through the oxygen removal
system, and in the case of passing water through the system. A pressurized
water reactor VVER was chosen to be investigated in this study. The amount of
hydrogen molecules was estimated so as to eliminate completely the oxygen
molecules from coolant water. The estimated value was found to be less than
the permissible range for coolant water for such type of reactors.
A series of polymer blends are prepared by sequential mixing of epoxy resin
EP with polyurethane PU. The effect of different amount of polyurethane 10%,
20%and 30% wt fraction on conduction and dielectric relaxation has been
reported. It was found
that all blends showed three activation energies (Eac) at
all frequencies, and the glass transition temperature (Tg) was increased with
PU wt fraction. The exponent s values were estimated to be less than unity for
all blends. Cole-Cole diagram was used to evaluate the polarizability (α),
molecular relaxation time (τ) and optical dielectric constant (εOP). The
thermodynamic parameters also determined, the result showed that the Gibbs
free energy of activation (ΔG) and enthalpy (ΔH) are high for all blends.
In this study, we have designed and manufactured a simple and relatively
inexpensive solar cell, from the available materials in the local markets, where the cell is
contained of the outer body (Case), which is a plastic box on a parallel form of r
ectangles
of acrylic transparent allows the passage of light. It has resilient and high durability, and
two poles of red copper higher purity, one of them has been thermally treatment to
different temperatures (200, 300, 400°C), which turns the copper pole from carrier to semiconductor
(cuprous oxide, Cu2O), using heating device (Hot plate).
The other pole left without treatment and the electrolyte solution (Gel) has been
developed on the (Hydrogel), thus freeing electrons from the treatment plate to the
Hydrogel layer then to the clean plate (non-treatment), during shining light.
The results showed that the cell voltage proportional to the polyelectrolyte
concentration and the area of copper pole (cuprous oxide). As the experiments showed that
the temperature has an important role in transforming the metal carrier to the semiconductor,
and whenever this conversion possible whenever the pole of the light
sensitively more effective and efficient.
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