scholarly journals Real-Time Scattering-Contrast Imaging of a Supported Cobalt-Based Catalyst Body during Activation and Fischer–Tropsch Synthesis Revealing Spatial Dependence of Particle Size and Phase on Catalytic Properties

ACS Catalysis ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 2284-2293 ◽  
Author(s):  
Pierre Senecal ◽  
Simon D. M. Jacques ◽  
Marco Di Michiel ◽  
Simon A. J. Kimber ◽  
Antonis Vamvakeros ◽  
...  
Keyword(s):  
Particle Size ◽  
Real Time ◽  
Spatial Dependence ◽  
Catalytic Properties ◽  
Tropsch Synthesis ◽  
Contrast Imaging ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis

scholarly journals INFLUENCE OF PREPARING NANOSCALE SUSPENSIONS METHOD ON ITS PHYSICO-CHEMICAL AND CATALYTIC PROPERTIES UNDER THE CONDITIONS OF FISCHER-TROPSCH SYNTHESIS

2018 ◽  
Vol 61 (9-10) ◽  
pp. 70-76 ◽  
Author(s):  
Mayya V. Kulikova ◽  
Oksana S. Dement’eva ◽  
Maria V. Chudakova ◽  
Mikhail I. Ivantsov
Keyword(s):  
Particle Size ◽  
Catalytic Properties ◽  
Precursor Solution ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Flash Pyrolysis ◽  
Fischer Tropsch Synthesis ◽  
Metal Precursor ◽  
Physico Chemical ◽  
Active Metal

Methods for the formation of stable iron-containing suspensions that exhibit activity in the conversion of synthesis gas to C5+ hydrocarbons by the Fischer-Tropsch method are proposed. By XRD and DLS methods it was determined that the formation of the Fe2O3 phase with a bimodal particle size distribution of 50 and 295 nm results in the formation of a suspension by the drop thermolysis method − the gradual introduction of the active metal precursor solution into the dispersion medium (mixture of hydrocarbons C19H40-C32H66). Pulsed introduction of the active metal precursor solution (flash-pyrolysis) into the reactor zone leads to the formation of the Fe3O4 phase with a particle size of 91 and 460 nm. By TEM and AFM methods it was established that, regardless of the slurry forming method, large active phase particles are agglomerates of a finer fraction of particles with an average size of 42 nm. The obtained suspensions demonstrated high activity in the Fischer-Tropsch synthesis under the slurry-reactor conditions, however, the degree of CO conversion is slightly higher in the case of the catalytic suspension prepared by the drop thermolysis method. It is shown that the method of forming the suspension significantly affects the fractional composition of the resulting reaction products. In the presence of a suspension obtained by drop thermolysis, the yield of liquid hydrocarbons reaches 130 g/m3, while a high content of C19+ hydrocarbons is observed. The system formed by the method of flash-pyrolysis makes it possible to obtain mainly the gasoline (C5-C10) and diesel (C11-C18) hydrocarbon fractions. It should be noted that the products of the reaction have a high content of unsaturated hydrocarbons, which reaches 55%. Thus, the composition of the final products of FTS can be controlled by the choice of the catalytic suspension prepared method. For citation: Kulikova M.V., Dement’eva O.S., Chudakova M.V., Ivantsov M.I. Influence of preparing nanoscale suspensions method on its physico-chemical and catalytic properties under the conditions of Fischer-Tropsch synthesis. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 9-10. P. 70-75  

Particle size effects in Fischer–Tropsch synthesis by cobalt

2012 ◽  
Vol 181 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Zhou-jun Wang ◽  
Stephanie Skiles ◽  
Fan Yang ◽  
Zhen Yan ◽  
D. Wayne Goodman
Keyword(s):  
Particle Size ◽  
Size Effects ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Particle Size Effects

Fischer–Tropsch Synthesis: Morphology, Phase Transformation and Particle Size Growth of Nano-scale Particles

2007 ◽  
Vol 117 (1-2) ◽  
pp. 1-17 ◽  
Author(s):  
Amitava Sarkar ◽  
Deepyaman Seth ◽  
Alan K. Dozier ◽  
James K. Neathery ◽  
Hussein H. Hamdeh ◽  
...  
Keyword(s):  
Particle Size ◽  
Phase Transformation ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Nano Scale ◽  
Size Growth
Sign in / Sign up

Export Citation Format

Share Document