taghi rostamikia - Academia.edu (original) (raw)
Papers by taghi rostamikia
International Journal of Corrosion, 2015
The inhibition effect of pomegranate peel extract (PPE) on the corrosion of mild steel in hydroch... more The inhibition effect of pomegranate peel extract (PPE) on the corrosion of mild steel in hydrochloric acid (HCl) solution was investigated. The polarization, mass loss, and electrochemical impendence techniques were used to evaluate the corrosion inhibition performance of the pomegranate peel extract. The results revealed that PPE acts as a corrosion inhibitor in HCl solution. The inhibition efficiency increased with the increase of extract concentration. The inhibition action was attributed to the adsorption of the chemical compounds present in the extract solution, on mild steel surface.
Reaction Kinetics, Mechanisms and Catalysis
Mesoporous silica FDU12 and mesoporous silica–alumina (MSA) were successfully synthesized and use... more Mesoporous silica FDU12 and mesoporous silica–alumina (MSA) were successfully synthesized and used as supports. The corresponding Pd and Pt catalysts were investigated to reduce the benzene in reformate gasoline at 423–473 K. The catalysts were characterized by XRD, XRF, EDS-map, H2-adsorption, NH3-adsorption, Py-IR and N2 adsorption/desorption techniques. The influences of temperature on catalytic activity were studied by calculating the conversion and specific rate. All prepared catalysts showed high activity at low temperature. To evaluate the performance of catalysts, different H2/benzene molar ratios were used. The highest conversion of benzene is achieved at the low temperatures. The results demonstrated that the Pd/FDU12 catalyst has the best catalytic performance with suitable Lewis acid site properties. The MSA support demonstrated high activity in toluene conversion due to pore size and Brønsted and Lewis acid site amounts. Benzene molecules find a greater chance of hydrogenation at a high resident time in low H2/benzene molar ratio.
Mesoporous silica FDU12 and mesoporous silica–alumina (MSA) were successfully synthesized and use... more Mesoporous silica FDU12 and mesoporous silica–alumina (MSA) were successfully synthesized and used as supports. The corresponding Pd and Pt catalysts were investigated to reduce the benzene in reformate gasoline at 423–473 K. The catalysts were characterized by XRD, XRF, EDS-map, H2-adsorption, NH3-adsorption, Py-IR and N2 adsorption/desorption techniques. The influences of temperature on catalytic activity were studied by calculating the conversion and specific rate. All prepared catalysts showed high activity at low temperature. To evaluate the performance of catalysts, different H2/benzene molar ratios were used. The highest conversion of benzene is achieved at the low temperatures. The results demonstrated that the Pd/FDU12 catalyst has the best catalytic performance with suitable Lewis acid site properties. The MSA support demonstrated high activity in toluene conversion due to pore size and Brønsted and Lewis acid site amounts. Benzene molecules find a greater chance of hydrog...
New synthetic Cs + selective carrier, derivative of γ-pyrone, has been used as ionophore in liqui... more New synthetic Cs + selective carrier, derivative of γ-pyrone, has been used as ionophore in liquid membrane electrode. The sensor exhibits a Nernstian response (57.7 mV per decade at 298 K) for Cs + ions over a wide concentration range (1 x 10 - 1 -3 x 10 - 5 M) with detection limit of 3 x 10 - 5 M. It has a relatively fast response time (t 9 0 % = 17s, t 1 m V = 46 s) and can be used for at least 75 days without any considerable divergence in potentials. The selectivity coefficients for cesium with respect to alkali, alkaline earth, hydrogen, ammonium and transition metal ions were determined by separate solution method. In order to study the dynamic response behaviour of membrane electrode based on neutral-carrier, the variation of potential response of cesium selective electrode with time was recorded and the agreement of experimental results with many physical models, for mechanism of transient, was investigated.
International Journal of Corrosion, 2015
The inhibition effect of pomegranate peel extract (PPE) on the corrosion of mild steel in hydroch... more The inhibition effect of pomegranate peel extract (PPE) on the corrosion of mild steel in hydrochloric acid (HCl) solution was investigated. The polarization, mass loss, and electrochemical impendence techniques were used to evaluate the corrosion inhibition performance of the pomegranate peel extract. The results revealed that PPE acts as a corrosion inhibitor in HCl solution. The inhibition efficiency increased with the increase of extract concentration. The inhibition action was attributed to the adsorption of the chemical compounds present in the extract solution, on mild steel surface.
Reaction Kinetics, Mechanisms and Catalysis
Mesoporous silica FDU12 and mesoporous silica–alumina (MSA) were successfully synthesized and use... more Mesoporous silica FDU12 and mesoporous silica–alumina (MSA) were successfully synthesized and used as supports. The corresponding Pd and Pt catalysts were investigated to reduce the benzene in reformate gasoline at 423–473 K. The catalysts were characterized by XRD, XRF, EDS-map, H2-adsorption, NH3-adsorption, Py-IR and N2 adsorption/desorption techniques. The influences of temperature on catalytic activity were studied by calculating the conversion and specific rate. All prepared catalysts showed high activity at low temperature. To evaluate the performance of catalysts, different H2/benzene molar ratios were used. The highest conversion of benzene is achieved at the low temperatures. The results demonstrated that the Pd/FDU12 catalyst has the best catalytic performance with suitable Lewis acid site properties. The MSA support demonstrated high activity in toluene conversion due to pore size and Brønsted and Lewis acid site amounts. Benzene molecules find a greater chance of hydrogenation at a high resident time in low H2/benzene molar ratio.
Mesoporous silica FDU12 and mesoporous silica–alumina (MSA) were successfully synthesized and use... more Mesoporous silica FDU12 and mesoporous silica–alumina (MSA) were successfully synthesized and used as supports. The corresponding Pd and Pt catalysts were investigated to reduce the benzene in reformate gasoline at 423–473 K. The catalysts were characterized by XRD, XRF, EDS-map, H2-adsorption, NH3-adsorption, Py-IR and N2 adsorption/desorption techniques. The influences of temperature on catalytic activity were studied by calculating the conversion and specific rate. All prepared catalysts showed high activity at low temperature. To evaluate the performance of catalysts, different H2/benzene molar ratios were used. The highest conversion of benzene is achieved at the low temperatures. The results demonstrated that the Pd/FDU12 catalyst has the best catalytic performance with suitable Lewis acid site properties. The MSA support demonstrated high activity in toluene conversion due to pore size and Brønsted and Lewis acid site amounts. Benzene molecules find a greater chance of hydrog...
New synthetic Cs + selective carrier, derivative of γ-pyrone, has been used as ionophore in liqui... more New synthetic Cs + selective carrier, derivative of γ-pyrone, has been used as ionophore in liquid membrane electrode. The sensor exhibits a Nernstian response (57.7 mV per decade at 298 K) for Cs + ions over a wide concentration range (1 x 10 - 1 -3 x 10 - 5 M) with detection limit of 3 x 10 - 5 M. It has a relatively fast response time (t 9 0 % = 17s, t 1 m V = 46 s) and can be used for at least 75 days without any considerable divergence in potentials. The selectivity coefficients for cesium with respect to alkali, alkaline earth, hydrogen, ammonium and transition metal ions were determined by separate solution method. In order to study the dynamic response behaviour of membrane electrode based on neutral-carrier, the variation of potential response of cesium selective electrode with time was recorded and the agreement of experimental results with many physical models, for mechanism of transient, was investigated.