Journal ArticleDOI
Controlling activity and selectivity of bare ZrO2 in non-oxidative propane dehydrogenation
Tatiana Otroshchenko,Olga A. Bulavchenko,Huyen V. Thanh,Jabor Rabeah,Ursula Bentrup,Alexander A. Matvienko,Uwe Rodemerck,Benjamin Paul,Ralph Kraehnert,David Linke,Evgenii V. Kondratenko +10 more
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In this paper, a detailed study was carried out on the factors affecting the activity and particularly selectivity of bare ZrO2 in the non-oxidative propane dehydrogenation (PDH) to propene.Abstract:
A detailed study was carried out on the factors affecting the activity and, particularly, selectivity of bare ZrO2 in the non-oxidative propane dehydrogenation (PDH) to propene. To this end, a series of ZrO2 samples differing in their redox and acidic properties, morphology and phase composition were synthesized by precipitation, sol-gel, glycine-nitrate combustion, template, digestion and calcination methods as well as through controlled thermal decomposition of zirconium oxonitrate. The ability of ZrO2 to release its lattice oxygen in reducing atmosphere was identified as the main factor affecting PDH activity and propene selectivity. This is due to the fact that so generated surface zirconium cations (Zrcus) with lower coordination than their regular counterparts show higher activity for propene formation. As the latter sites strongly contribute to coke formation, the selectivity to this undesired product can be hindered through improving the ability of ZrO2 to generate Zrcus sites under reducing conditions.read more
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Propane dehydrogenation: catalyst development, new chemistry, and emerging technologies
Sai Chen,Xin Chang,Guodong Sun,Tingting Zhang,Yiyi Xu,Yang Wang,Chunlei Pei,Jinlong Gong,Jinlong Gong +8 more
TL;DR: In this article, a review describes recent advances in the fundamental understandings of the Propane Dehydrogenation (PDH) process in terms of emerging technologies, catalyst development and new chemistry in regulating the catalyst structures and inhibiting the catalyst deactivation.
Journal ArticleDOI
Dehydrogenation of light alkanes to mono-olefins.
Chunyi Li,Guowei Wang +1 more
TL;DR: In this paper, a review of light alkane dehydrogenation to mono-olefins, and the progress made in the development of catalysts and reactors, and a new understanding of reaction mechanism as well as its guiding role in the developing of catalyst and reactor is presented.
Journal ArticleDOI
Catalyst design and tuning for oxidative dehydrogenation of propane – A review
Yahya Gambo,Sagir Adamu,A.A. Abdulrasheed,Rahima A. Lucky,Mohammed S. Ba-Shammakh,Mohammad M. Hossain +5 more
TL;DR: In this article, the authors systematically and comprehensively reviewed recent advances on key aspects related to ODHP catalysts such as nature of the active sites, active sites isolation, accessibility of active sites in layered-double hydroxide (LDH) derived mixed oxide catalysts, intercalated LDH precursors, co-precipitated LDH pre-structure, oxides-support interaction, oxygen vacancy, surface oxide reducibility, and acid base property.
Journal ArticleDOI
Facilitating the reduction of V–O bonds on VOx/ZrO2 catalysts for non-oxidative propane dehydrogenation
TL;DR: The interaction between VOx and ZrO2 can facilitate the reduction of V–O bonds, including V, and this work provides a new insight into understanding the structure–performance correlation in VOx-based catalysts for non-oxidative propane dehydrogenation.
Journal ArticleDOI
Elucidating the Nature of Active Sites and Fundamentals for their Creation in Zn-Containing ZrO2–Based Catalysts for Nonoxidative Propane Dehydrogenation
Shanlei Han,Shanlei Han,Dan Zhao,Dan Zhao,Tatiana Otroshchenko,Henrik Lund,Ursula Bentrup,Vita A. Kondratenko,Nils Rockstroh,Stephan Bartling,Dmitry E. Doronkin,Jan-Dierk Grunwaldt,Uwe Rodemerck,David Linke,Manglai Gao,Guiyuan Jiang,Evgenii V. Kondratenko +16 more
TL;DR: In this paper, ZnO-containing ZrO2- or MZrOx-supported (M = Ce, La, Ti or Y) catalysts were introduced for large-scale nonoxidative dehydrogenation of propane to propene (PDH) to replace currently used CrOx- or Pt-based catalysts.
References
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Conversion of Methanol to Hydrocarbons: How Zeolite Cavity and Pore Size Controls Product Selectivity
Unni Olsbye,Stian Svelle,Morten Bjørgen,Pablo Beato,Ton V. W. Janssens,Finn Joensen,Silvia Bordiga,Karl Petter Lillerud +7 more
TL;DR: This Review presents several commercial MTH projects that have recently been realized, and also fundamental research into the synthesis of microporous materials for the targeted variation of selectivity and lifetime of the catalysts.
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Catalytic dehydrogenation of light alkanes on metals and metal oxides.
TL;DR: The study compares different catalysts in terms of the reaction mechanism and deactivation pathways and catalytic performance, as dehydrogenation for the production of light olefins has become extremely relevant.
Journal ArticleDOI
Catalysts for Production of Lower Olefins from Synthesis Gas: A Review
TL;DR: In this paper, the major routes for the production of lower olefins from synthesis gas with an emphasis on a direct or single step process, the so-called Fischer-Tropsch to olefin process, is described.
Journal ArticleDOI
Dehydrogenation and oxydehydrogenation of paraffins to olefins
TL;DR: The use of carbon dioxide as an oxidant for ethane conversion to ethylene has been investigated as a potential way to reduce the negative impact of dangerous oxidant-paraffin mixtures and to achieve higher selectivity as mentioned in this paper.
Journal ArticleDOI
Recent advancements in ethylene and propylene production using the UOP/Hydro MTO process
TL;DR: The UOP/Hydro MTO process utilizes a SAPO-34-containing catalyst that provides up to 80% yield of ethylene and propylene at near-complete methanol conversion as discussed by the authors.