scholarly journals Selective methanethiol-to-olefins conversion over HSSZ-13 zeolite

2021 ◽  
Vol 57 (27) ◽  
pp. 3323-3326
Author(s):  
Miao Yu ◽  
Nicoló Tormene ◽  
Aleksei Bolshakov ◽  
Brahim Mezari ◽  
Anna Liutkova ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Light Olefins ◽  
Zeolite P

We demonstrated that methanethiol can be selectively converted to light olefins over 8MR zeolites which provides clues about the reaction mechanism of MTH chemistry.

Evolution of the reaction mechanism during the MTH induction period over the 2-dimensional FER zeolite

RSC Advances ◽  
2016 ◽  
Vol 6 (61) ◽  
pp. 56698-56704 ◽  
Author(s):  
Liang Qi ◽  
Jinzhe Li ◽  
Lei Xu ◽  
Zhongmin Liu
Keyword(s):  
Reaction Mechanism ◽  
Induction Period ◽  
Dual Cycle ◽  
Zeolite P

During the MTH reaction over HZSM-35, the dual-cycle mechanism was found to evolve evidently as the induction reaction progressed.

scholarly journals A Review on the Production of Light Olefins Using Steam Cracking of Hydrocarbons

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8190
Author(s):  
Zahra Gholami ◽  
Fatemeh Gholami ◽  
Zdeněk Tišler ◽  
Mohammadtaghi Vakili
Keyword(s):  
Reaction Mechanism ◽  
Residence Time ◽  
Building Blocks ◽  
Light Olefins ◽  
Operating Parameters ◽  
Synthetic Fibers ◽  
Plastic Materials ◽  
Olefin Production ◽  
Steam Cracking ◽  
Cracking Process

Light olefins are the main building blocks used in the petrochemical and chemical industries for the production of different components such as polymers, synthetic fibers, rubbers, and plastic materials. Currently, steam cracking of hydrocarbons is the main technology for the production of light olefins. In steam cracking, the pyrolysis of feedstocks occurs in the cracking furnace, where hydrocarbon feed and steam are first mixed and preheated in the convection section and then enter the furnace radiation section to crack to the desired products. This paper summarizes olefin production via the steam cracking process; and the reaction mechanism and cracking furnace are also discussed. The effect of different operating parameters, including temperature, residence time, feedstock composition, and the steam-to-hydrocarbon ratio, are also reviewed.

scholarly journals On the reaction mechanism of MnOx/SAPO-34 bifunctional catalysts for the conversion of syngas to light olefins

2021 ◽  
Author(s):  
Christophe Coudercy ◽  
Valentin L'hospital ◽  
Ruben Checa ◽  
Anthony Le Valant ◽  
Pavel Afanasiev ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Light Olefins ◽  
Bifunctional Catalysts

MnOx/SAPO-34 bifunctional catalysts are efficient for the conversion of syngas to light olefins. However, the reaction mechanism is still debated in particular the nature of the intermediate formed on MnOx...

Arylation of enelactams using TIPSOTf: reaction scope and mechanistic insight

2021 ◽  
Author(s):  
Tomasz J. Idzik ◽  
Zofia M. Myk ◽  
Łukasz Struk ◽  
Magdalena Perużyńska ◽  
Gabriela Maciejewska ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Multinuclear Nmr ◽  
Mechanistic Insight ◽  
Nmr Study ◽  
Wide Range

Triisopropylsilyltrifluoromethanesulfonate can be effectively used for the arylation of a wide range of enelactams. The multinuclear NMR study provided deep insights into the reaction mechanism.

Theoretical study of the ketonization reaction mechanism of acetic acid over SiO2

2009 ◽  
Author(s):  
Mendel Fleisher ◽  
E. Lukevics ◽  
L. Leite ◽  
D. Jansone ◽  
K. Edolfa ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Reaction Mechanism ◽  
Theoretical Study

OPTIMIZATION OF A SURROGATE REDUCED AVIATION FUEL-AIR REACTION MECHANISM USING A GENETIC ALGORITHM

Clean Air ◽  
2007 ◽  
Vol 8 (1) ◽  
pp. 1-24
Author(s):  
M. Pourkashanian ◽  
N. S. Mera ◽  
Lionel Elliott ◽  
C. W. Wilson ◽  
Derek B. Ingham ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Reaction Mechanism ◽  
Aviation Fuel

Ligand-Enabled γ-C(sp3)–H Olefination of Free Carboxylic Acids

2020 ◽  
Author(s):  
Kiron Kumar Ghosh ◽  
Alexander Uttry ◽  
Francesca Ghiringhelli ◽  
Arup Mondal ◽  
Manuel van Gemmeren
Keyword(s):  
Reaction Mechanism ◽  
Carboxylic Acids ◽  
Michael Addition ◽  
Kinetic Studies ◽  
Wide Range ◽  
Palladium Catalyzed

We report the ligand enabled C(sp3)–H activation/olefination of free carboxylic acids in the γ-position. Through an intramolecular Michael-addition, δ-lactones are obtained as products. Two distinct ligand classes are identified that enable the challenging palladium-catalyzed activation of free carboxylic acids in the γ-position. The developed protocol features a wide range of acid substrates and olefin reaction partners and is shown to be applicable on a preparatively useful scale. Insights into the underlying reaction mechanism obtained through kinetic studies are reported.<br>

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