NDLI: The effect of H$_{2}$S on the selectivity of light alkenes in the FE-Mn-catalyzed Fischer-Tropsch synthesis

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Chemical behavior of 5-vinyl-2-norbornene, 5-ethylidene-2-norbornene, and related compounds as a key to understanding the specifics of radiation—Chemical processes: 4. Transformations of excited triplet molecules of 5-vinyl-2-norbornene in benzene and cyclohexane

The effect of H$_{2}$S on the selectivity of light alkenes in the FE-Mn-catalyzed Fischer-Tropsch synthesis

Petroleum Chemistry : Volume 49

Petroleum Chemistry : Volume 48

Petroleum Chemistry : Volume 47

Petroleum Chemistry : Volume 46

The effect of H$_{2}$S on the selectivity of light alkenes in the FE-Mn-catalyzed Fischer-Tropsch synthesis

Content Provider	Springer Nature Link
Author	Hadadzadeh, H. Mirzaei, A. A. Morshedi, M. Raeisi, A. Feyzi, M. Rostamizadeh, N.
Copyright Year	2010
Abstract	Iron-manganese oxides are prepared using a co-precipitation procedure and studied for the conversion of synthesis gas to light olefins. In particular, the effect of a range of preparation variables is investigated in details. In this investigation, sulfur absorption and effect of sulfur poisoning on Fe-Mn catalysts have been studied. In the Fischer-Tropsch synthesis process, the poisoning of the catalyst is one of the important parameters causing a decrease in the catalyst activity, declaring the sulfur compounds as virulent poisons in this process. In the present investigation, poisoning of Fe-Mn catalysts were performed in a gas circulation system and H$_{2}$S was injected into a circulation loop. The prepared catalysts were exposed to a mixture of H$_{2}$S and N$_{2}$ at about 450°C in the stainless-steel micro reactor via co-precipitation method. H$_{2}$S was produced by addition of H$_{2}$SO$_{4}$ to Na$_{2}$S × H$_{2}$O and this gas was mixed with an inert carrier gas (N$_{2}$). Comparing the activity and selectivity of fresh and poisoned catalysts, indicates that the selectivity and CO conversion are affected by high-level sulfur adsorbed on the catalysts. The results show that the CO conversion and selectivity with respect to methane production and coke formation were decreased, but the selectivity of light alkenes such as propylene was increased over poisoned catalysts. Characterization of both precursors and calcined catalysts by powder X-ray diffraction, BET specific surface area and thermal analysis methods such as TGA and DSC showed that the poisoning of Fe-Mn catalysts influenced the catalyst structure.
Starting Page	78
Ending Page	86
Page Count	9
File Format	PDF
ISSN	09655441
Journal	Petroleum Chemistry
Volume Number	50
Issue Number	1
e-ISSN	15556239
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2010-02-03
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Geochemistry and Petrology Fuel Technology Chemical Engineering Energy Engineering and Power Technology

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