Determination of rate processes and parameters for hydrogen adsorption on silica supported ruthenium catalysts

İldeş, Ayşe


Determination of isothermal Austenite Grain Growth model parameters for SAE 8620H Carburizing steel
Yıldız, Seçil; Yılmaz, Hasan; Yazır, Büşra; Evcil, Eilf; Şimşir, Caner; Davut, Kemal (null; 2016-12-01)
Carburizing treatments involve longer holdings at the austenite region, which can produce a range of different prior-austenite grain sizes (PAGS) depending on the growth behavior. The PAGS influences hardenability, phase transformation kinetics and hence the final phase fraction; and therefore the final mechanical properties. Since the high-temperature austenite structure is transformed during subsequent cooling steps, controlling the formation of desired austenitic structure during carburizing treatment is...
Determination of kinetic parameters and hydrogen desorption characteristics of MgH2-10 wt% (9Ni-2Mg-Y) nano-composite
Pourabdoli, Mehdi; Raygan, Shahram; Abdizadeh, Hossein; Üner, Deniz (2013-09-10)
Hydrogen desorption kinetic parameters of MgH2 compounds were measured and compared with published gas solid reaction models. The compounds investigated in this study were as-received MgH2, ball milled MgH2, and MgH2 ball milled with 9Ni-2Mg-Y catalyst compound. It was determined that different models were necessary to fit the hydrogen desorption data collected at different temperatures on the same sample, indicating that desorption mechanisms changed with respect to temperature. Addition of (9Ni-2Mg-Y) all...
Determination of the mechanical properties of polyester based fiber-reinforced composites
Özdemir, Ömer; Turhan, Doğan; Department of Engineering Sciences (1996)
Determination of optical parameters of Ga0.75In0.25Se layered crystals
IŞIK, MEHMET; Hasanlı, Nızamı (2012-05-01)
The optical properties of the Ga0.75In0.25Se crystals have been investigated by means of transmission and reflection measurements in the wavelength range of 380-1100 nm. The analysis of the results performed at room temperature revealed the presence of optical indirect transtions with band gap energy of 1.89 eV. The variation of the band gap energy as a function of temperature was also studied in the temperature range of 10-300 K. The rate of change of band gap energy (? = 6.2 x 10(4) eV/K) and absolute zer...
Determination of Displacement Amplification Factors for Chevron BRBFs
Bozkurt, Mehmet Bakır; Özkılıç, Yasin Onuralp; Topkaya, Cem (null; 2017-10-05)
Buckling restrained braced frames (BRBFs) can be used as a lateral load resisting system in high seismic regions. In the United States it is necessary to comply with the requirements defined in the Seismic Provisions for Structural Steel Buildings (AISC341- 10) for the design and production of BRBs. In addition, response factors defined in Minimum Design Loads for Buildings and Other Structures (ASCE 7-10) should be utilized. In this study, deflection amplification factor (Cd) is evaluated. Pursuant to this...
Citation Formats
A. İldeş, “Determination of rate processes and parameters for hydrogen adsorption on silica supported ruthenium catalysts,” Middle East Technical University, 1999.