Search Results - "Bukur, Dragomir B."

Fischer–Tropsch synthesis: Effect of Pd, Pt, Re, and Ru noble metal promoters on the activity and selectivity of a 25%Co/Al2O3 catalyst by Ma, Wenping, Jacobs, Gary, Keogh, Robert A., Bukur, Dragomir B., Davis, Burtron H.

“… [Display omitted] ► Effect of Pd, Pt, Re, and Ru on the performance of 25% Co/Al2O3 was studied. ► Catalysts performance was examined in a 1-L continuously…”
Get full text

Kinetic Model of Fischer–Tropsch Synthesis in a Slurry Reactor on Co–Re/Al2O3 Catalyst by Todic, Branislav, Bhatelia, Tejas, Froment, Gilbert F, Ma, Wenping, Jacobs, Gary, Davis, Burtron H, Bukur, Dragomir B

“…A kinetic model for Fischer–Tropsch synthesis is derived using a Langmuir–Hinshelwood–Hougen–Watson approach. Experiments were conducted over 25% Co/0.48%…”
Get full text

Fischer-Tropsch synthesis on a model Co/SiO2 catalyst by ZHEN YAN, ZHOUJUN WANG, BUKUR, Dragomir B, GOODMAN, D. Wayne

“…The kinetics and product distributions of Fischer-Tropsch synthesis on a planar model Co/SiO2 catalyst are in good agreement with those obtained on…”
Get full text

Effects of process and design parameters on heat management in fixed bed Fischer-Tropsch synthesis reactor by Todic, Branislav, Mandic, Milos, Nikacevic, Nikola, Bukur, Dragomir B.

“…A two-dimensional pseudo-homogeneous model of wall-cooled fixed bed Fischer-Tropsch synthesis (FTS) reactor with Co/Re/ γ -Al 2 O 3 catalyst was developed to…”
Get full text

Role of water-gas-shift reaction in Fischer–Tropsch synthesis on iron catalysts: A review by Bukur, Dragomir B., Todic, Branislav, Elbashir, Nimir

“…•For a feed with H2/CO>1.7 the single pass syngas conversion is less than 50–60%.•Partial pressure of water increases with conversion which causes…”
Get full text

Fischer–Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions by Todic, Branislav, Nowicki, Lech, Nikacevic, Nikola, Bukur, Dragomir B.

“…Component carbon number distribution. •Methane selectivity decreases with decrease in temperature and H2/CO feed ratio.•Space velocity and pressure have a…”
Get full text

Comparison of Cubic-Plus-Association and Soave-Redlich-Kwong equations of state for prediction of vapor-liquid equilibrium of Fischer-Tropsch reaction mixture by Živanić Ljiljana, Stamenić Marko, Todić Branislav, Bukur Dragomir B., Nikačević Nikola

“…Predictions of vapor liquid equilibrium for Fischer-Tropsch mixtures were compared using the classical Soave-Redlich-Kwong (SRK) and cubic-plus-association…”
Get full text

Supported iron catalysts for slurry phase Fischer–Tropsch synthesis by Bukur, Dragomir B., Sivaraj, Chokkaram

“…The present study was undertaken to investigate reduction and catalytic behavior of silica and alumina-supported iron Fischer–Tropsch (F–T) catalysts promoted…”
Get full text

NiO supported on Al2O3 and ZrO2 oxygen carriers for chemical looping steam methane reforming by Silvester, Lishil, Antzara, Andy, Boskovic, Goran, Heracleous, Eleni, Lemonidou, Angeliki A., Bukur, Dragomir B.

“…Two nickel based oxygen transfer materials (OTMs) supported on alumina and zirconia were tested for their potential use in chemical looping reforming. Zirconia…”
Get full text

Activity study of NiO-based oxygen carriers in chemical looping steam methane reforming by Antzara, Andy, Heracleous, Eleni, Silvester, Lishil, Bukur, Dragomir B., Lemonidou, Angeliki A.

“…[Display omitted] •Metallic Ni on ZrO2, Al2O3 and NiAl2O4 is active and stable in reforming.•Use of SiO2 and TiO2 support results in fast catalyst…”
Get full text

Reduction and oxidation kinetic modeling of NiO-based oxygen transfer materials by Ipsakis, Dimitris, Heracleous, Eleni, Silvester, Lishil, Bukur, Dragomir B., Lemonidou, Angeliki A.

“…[Display omitted] •Nature of support influences NiO reduction mechanism.•Shrinking core model best describes NiO reduction on strongly interacting support.•On…”
Get full text

On the use of an in situ magnetometer to study redox and sintering properties of NiO based oxygen carrier materials for chemical looping steam methane reforming by Bukur, Dragomir B., Silvester, Lishil, Fischer, Nico, Claeys, Michael, Lemonidou, Angeliki A.

“…Two NiO based oxygen carrier materials (OCMs) were synthesized and tested for use as potential materials in chemical looping reforming applications. Redox…”
Get full text

CO-insertion mechanism based kinetic model of the Fischer-Tropsch synthesis reaction over Re-promoted Co catalyst by TODIC, Branislav, WENPING MA, JACOBS, Gary, DAVIS, Burtron H, BUKUR, Dragomir B

Get full text

Fischer–Tropsch synthesis on Co/ZnO catalyst—Effect of pretreatment procedure by Pan, Zhendong, Bukur, Dragomir B.

“…[Display omitted] ► H 2-activated Co/ZnO catalyst was more active than the CO-activated catalyst. ► H 2-activated catalyst had higher olefin content and lower…”
Get full text

Effects of Catalyst Activity, Particle Size and Shape, and Process Conditions on Catalyst Effectiveness and Methane Selectivity for Fischer–Tropsch Reaction: A Modeling Study by Mandić, Miloš, Todić, Branislav, Živanić, Ljiljana, Nikačević, Nikola, Bukur, Dragomir B

“…We investigate effects of catalyst activity, catalyst particle shape (sphere, slab, and hollow cylinder), size (i.e., diffusion length), catalyst distribution…”
Get full text

Effect of process conditions on the product distribution of Fischer–Tropsch synthesis over a Re-promoted cobalt-alumina catalyst using a stirred tank slurry reactor by Todic, Branislav, Ma, Wenping, Jacobs, Gary, Davis, Burtron H., Bukur, Dragomir B.

“…•The growth probability of C1 intermediate (α1) is dependent on process conditions.•The C2+ growth probabilities (α2+) are relatively constant at different…”
Get full text

Development of NiO-Based Oxygen Carrier Materials: Effect of Support on Redox Behavior and Carbon Deposition in Methane by Silvester, Lishil, Ipsakis, Dimitris, Antzara, Andy, Heracleous, Eleni, Lemonidou, Angeliki A, Bukur, Dragomir B

“…Four NiO-based oxygen carrier materials (OCMs) were prepared by wet impregnation on different supports: alumina, silica, titania, and zirconia. Physicochemical…”
Get full text

Characterization of slurry phase iron catalysts for Fischer–Tropsch synthesis by Mansker, Linda D, Jin, Yaming, Bukur, Dragomir B, Datye, Abhaya K

“…The study of Iron Fischer–Tropsch catalysts by conventional powder X-ray diffraction (XRD) is complicated by the number and type of phases present (α-Fe,…”
Get full text

The application of synchrotron methods in characterizing iron and cobalt Fischer–Tropsch synthesis catalysts by Jacobs, Gary, Ma, Wenping, Gao, Pei, Todic, Branislav, Bhatelia, Tejas, Bukur, Dragomir B., Davis, Burtron H.

“…•TPR-EXAFS/XANES provides a transparent picture of reduction steps during activation.•The impact of promoters on H2-reduction/CO-carburization rates can be…”
Get full text

Dynamic analysis of millimetre-scale fixed bed reactors for Fischer-Tropsch synthesis by Mandić, Miloš, Dikić, Vladimir, Petkovska, Menka, Todić, Branislav, Bukur, Dragomir B., Nikačević, Nikola M.

“…[Display omitted] •Milli fixed bed Fischer-Tropsch reactors exhibit fast and highly nonlinear dynamics.•Thermal runaway may occur with disturbance of coolant…”
Get full text