Propylene metathesis over Re2O7/Al2O3-B2O3 catalysts

1992 ◽  
Vol 14 (3-4) ◽  
pp. 297-304 ◽  
Author(s):  
Fong-Chang Sheu ◽  
Cheng-Tsung Hong ◽  
Wen-Long Hwang ◽  
Cheng-Jec Shih ◽  
Jung-Chung Wu ◽  
...  
Keyword(s):  
Propylene Metathesis

Propylene Metathesis by Use of Novel TiCl4or Ti(O-i-Pr)4-treated Low Valent Lanthanide Particles (Sm and Yb)

1989 ◽  
Vol 18 (1) ◽  
pp. 171-172 ◽  
Author(s):  
Hayao Imamura ◽  
Kazuyoshi Koda ◽  
Hiroshi Miura ◽  
Susumu Tsuchiya
Keyword(s):  
Low Valent ◽  
Propylene Metathesis

Effects of ammonia upon propylene metathesis over a WO3SiO2 catalyst

1980 ◽  
Vol 8 (1-3) ◽  
pp. 127-134 ◽  
Author(s):  
J. Fathikalajahi ◽  
G.B. Wills
Keyword(s):  
Propylene Metathesis

A kinetic study of propylene metathesis on Re2O7/Al2O3

1985 ◽  
Vol 14 ◽  
pp. 261-276 ◽  
Author(s):  
R. Spinicci ◽  
A. Tofanari
Keyword(s):  
Kinetic Study ◽  
Propylene Metathesis

scholarly journals Propane to olefins tandem catalysis: a selective route towards light olefins production

2021 ◽  
Author(s):  
Matteo Monai ◽  
Marianna Gambino ◽  
Sippakorn Wannakao ◽  
Bert M. Weckhuysen
Keyword(s):  
Chemical Industry ◽  
Building Blocks ◽  
Single Step ◽  
Propane Dehydrogenation ◽  
Light Olefins ◽  
Tandem Catalysis ◽  
Challenges And Opportunities ◽  
Propylene Metathesis

Combining propane dehydrogenation with propylene metathesis in a single step yields mixtures of propylene, ethylene and butenes, important building blocks for the chemical industry. The open challenges and opportunities in the field are highlighted.

scholarly journals Universal promotion of heterogeneous olefin metathesis catalysts by controlling dynamic active site renewal

2021 ◽  
Author(s):  
Terry Z. H. Gani ◽  
Zachariah J. Berkson ◽  
Ran Zhu ◽  
Jong Hun Kang ◽  
John R. Di Iorio ◽  
...  
Keyword(s):  
Olefin Metathesis ◽  
Large Scale ◽  
Heterogeneous Catalysts ◽  
Operating Temperature ◽  
Spectroscopic Studies ◽  
Kinetic Measurements ◽  
Oh Groups ◽  
Proton Transfers ◽  
Metathesis Catalysts ◽  
Propylene Metathesis

Olefin metathesis is a versatile strategy for large-scale olefin interconversion, yet mechanistic details over industrial heterogeneous catalysts have remained ambiguous for decades. Here, from rigorous kinetic measurements, spectroscopic studies, and computational modeling of propylene metathesis over model and industrial WOx/SiO2 catalysts, we identify a hitherto unknown site renewal and decay cycle, mediated by proton transfers involving proximal Brønsted acidic OH groups, which operates concurrently with the classical Chauvin cycle. We show how this cycle can be manipulated using small quantities of promoter olefins to drastically increase steady-state propylene metathesis rates by up to 30-fold at 250oC with negligible promoter consumption. The increase in activity and considerable reduction of operating temperature requirements were also observed on MoOx/SiO2 catalysts, showing that this strategy is general and can address major roadblocks associated with industrial metathesis processes.

Sign in / Sign up

Export Citation Format

Share Document