22612-53-9Relevant academic research and scientific papers
The effect of propane activation over Ga-modified H-ZS M-5 catalysts
Ivanova, Irina I.,Blom, Niels,Hamid, Sharifah B. Abdul,Derouane, Eric G.
, p. 454 - 458 (1994)
In sity 13C MAS NMR was used to investigate the influence of total and partial pressure of propane on the initial stages of its conversion over a Ga/H-MFI catalyst. (2-13C) Propane was the labelled reactant.Different pressures were achieved by varying the amounts of propane and of nitrogen as diluent in the cell.The nature of primary and secondary labelled reaction products depends on total pressure.High total and partial pressures of propane enhance bimolecular primary formation of n-butane and isobutane via a BREST (Bifunctional Reaction Step) mechanism.Low total pressure leads to methane and polymeric fragments as primary products.A reaction pathway including the formation of a polymeric hydrocarbon-chain intermediate is proposed to account for secondary isobutane formation at low pressure.The influence of pressure on reaction equilibria and kinetics and on adsorption and exchange processes is discussed.
Reaction Sequence for the Alkylation of Alkenes with Methane
Koerts, Tijs,Santen, Rutger A. van
, p. 345 - 346 (1992)
Methane addition to alkenes is demonstrated to occur over transition metal catalysts to give modest yields.
Alkane activation initiated by hydride transfer: Co-conversion of propane and methanol over h-ZSM-5 Zeolite
Yu, Si-Min,Wu, Jian-Feng,Liu, Chong,Liu, Wei,Bai, Shi,Huang, Jun,Wang, Wei
, p. 7363 - 7366 (2015)
Co-conversion of alkane with another reactant over zeolite catalysts has emerged as a new approach to the long-standing challenge of alkane transformation. With the aid of solid-state NMR spectroscopy and GC-MS analysis, it was found that the co-conversion of propane and methanol can be readily initiated by hydride transfer at temperatures of ≥449K over the acidic zeolite H-ZSM-5. The formation of 13C-labeled methane and singly 13C-labeled n-butanes in selective labeling experiments provided the first evidence for the initial hydride transfer from propane to surface methoxy intermediates. The results not only provide new insight into carbocation chemistry of solid acids, but also shed light on the low-temperature transformation of alkanes for industrial applications.
