scholarly journals Combined Operando X-ray Diffraction/Raman Spectroscopy of Catalytic Solids in the Laboratory: The Co/TiO2 Fischer-Tropsch Synthesis Catalyst Showcase

ChemCatChem ◽  
2016 ◽  
Vol 8 (8) ◽  
pp. 1531-1542 ◽  
Author(s):  
Korneel H. Cats ◽  
Bert M. Weckhuysen
Keyword(s):  
Raman Spectroscopy ◽  
Tropsch Synthesis ◽  
X Ray Diffraction ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
X Ray

X-Ray Diffraction Studies of a Nickel–Thoria–Kieselguhr Catalyst for Fischer–Tropsch Synthesis

Nature ◽  
1947 ◽  
Vol 160 (4078) ◽  
pp. 907-908
Author(s):  
K. M. CHAKRAVARTY ◽  
RANJIT SEN
Keyword(s):  
Tropsch Synthesis ◽  
X Ray Diffraction ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
X Ray

Preparation and Characterization of Catalysts Fe/SBA-15 for Fischer Tropsch Synthesis

2014 ◽  
Vol 805 ◽  
pp. 678-683
Author(s):  
Ângela da Costa Nogueira ◽  
Jocielys Jovelino Rodrigues ◽  
Liliane Andrade Lima ◽  
Meiry Glaúcia Freire Rodrigues
Keyword(s):  
Nitrogen Adsorption ◽  
Tropsch Synthesis ◽  
X Ray Diffraction ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
X Ray ◽  
Acidic Conditions ◽  
Diffraction Peaks ◽  
Adsorption Desorption

In this study catalysts Fe/SBA-15 were prepared for Fischer-Tropsch Synthesis. SBA-15 samples were synthesized under acidic conditions using triblock copolymer Pluronic as a template and tetraethyl orthosilicate as a silica source.The molar composition was: 1.0 TEOS: 0017 P123: 8.14 HCl: 168 H2O. Fe/SBA-15 catalysts with different iron loading (15 wt. % and 20 wt. %) were prepared by wetness impregnation of relative SBA-15 with the desired amount of aqueous iron nitrate. The obtained catalyst were characterized by X ray diffraction (XDR), nitrogen adsorption-desorption and energy dispersive X-ray spectrometry (EDX). After impregnation of Fe the XRD profiles were almost unchanged and exhibited the high diffraction peaks of SBA-15 at low angles. The analysis of nitrogen adsorption-desorption was observed that the values of specific surface area decreased as the concentration of metal impregnated increased. And by the EDX analysis verified that the iron contents obtained are close to nominal levels of iron.

scholarly journals Getting and X-Ray Diffraction Analysis of the Microsphere Magnetic Catalyst of the Thorium-Uranium Catalyst for Fischer-Tropsch Synthesis

2015 ◽  
Vol 9 (2) ◽  
Author(s):  
Aibassov Erkin Zhakenovich ◽  
Yemelyanova Valentina Stepanovna ◽  
Schakieva Tatyana ◽  
Tussupbaev Nessipbay ◽  
Imanbekov Kylysh ◽  
...  
Keyword(s):  
Diffraction Analysis ◽  
Tropsch Synthesis ◽  
X Ray Diffraction ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Magnetic Catalyst ◽  
X Ray

scholarly journals Use of in situ Mossbauer Spectroscopy and X-Ray Diffraction Techniques for the Characterization of Activated Fe-Ce Catalysts Employed in Fischer-Tropsch Synthesis

2008 ◽  
Vol 1 (1) ◽  
pp. 64-70 ◽  
Author(s):  
F. J. Perez-Alonso ◽  
M. Ojeda ◽  
T. Herranz ◽  
J. M. Gonzalez-Carballo ◽  
J. L.G. Fierro ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Tropsch Synthesis ◽  
X Ray Diffraction ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
X Ray ◽  
Mößbauer Spectroscopy

Co-Promoted Cu/ZnO Catalysts for Fischer-Tropsch Synthesis

2017 ◽  
Vol 266 ◽  
pp. 117-121
Author(s):  
Piyasak Akcaboot ◽  
Napat Kanokpornwasin ◽  
Monthida Raoarun ◽  
Patraporn Saiwattanasuk ◽  
Pinsuda Viravathana
Keyword(s):  
Tropsch Synthesis ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Fischer Tropsch ◽  
Edge Structure ◽  
Fischer Tropsch Synthesis ◽  
X Ray ◽  
Cu Foil ◽  
Co Precipitation ◽  
X Ray Absorption

Co-promoted Cu/ZnO catalysts were studied for Fischer-Tropsch synthesis (FTS). All catalysts were prepared by the co-precipitation method, having the mass ratio of Co:Cu:Zn=0 (unpromoted), 0.05, 0.5:1:1, and characterized by X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), including X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS). From XRD and XAS, the results confirmed the phase transformation of CuO to Cu foil and Co3O4 to Co foil in Co-promoted catalysts after reduction. After FTS reaction testing, the Co-promoted catalysts showed the decrease in methanol selectivity of 15 and 1.6% for 0.05Co-Cu/ZnO and 0.5Co-Cu/ZnO, respectively, and the increase in C5-C15 selectivity during 30 h of reaction.

scholarly journals X-ray absorption, X-ray diffraction and electron microscopy study of spent cobalt based catalyst in semi-commercial scale Fischer–Tropsch synthesis

2014 ◽  
Vol 479 ◽  
pp. 59-69 ◽  
Author(s):  
Nikolaos E. Tsakoumis ◽  
Roya Dehghan-Niri ◽  
Magnus Rønning ◽  
John C. Walmsley ◽  
Øyvind Borg ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Tropsch Synthesis ◽  
X Ray Diffraction ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
X Ray ◽  
Commercial Scale ◽  
X Ray Absorption

Elucidation of The Influence of Cu Promoter on Carburization Prior to Iron-Based Fischer-Tropsch Synthesis: an In situ X-Ray Diffraction Study

ChemCatChem ◽  
2018 ◽  
Vol 11 (2) ◽  
pp. 715-723 ◽  
Author(s):  
Xiaodong Sun ◽  
Xingwu Liu ◽  
Jinjia Liu ◽  
Yurong He ◽  
Junqing Yin ◽  
...  
Keyword(s):  
Diffraction Study ◽  
Tropsch Synthesis ◽  
X Ray Diffraction ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
X Ray ◽  
Iron Based

Dynamic X-ray diffraction study of an unsupported iron catalyst in Fischer-Tropsch synthesis

1992 ◽  
Vol 134 (2) ◽  
pp. 654-667 ◽  
Author(s):  
Heon Jung ◽  
William J. Thomson
Keyword(s):  
Diffraction Study ◽  
Iron Catalyst ◽  
Tropsch Synthesis ◽  
X Ray Diffraction ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
X Ray
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