Mechanism of olefin synthesis from methanol and dimethyl ether over zeolite catalysts: A review

Benzene co-reaction with methanol and dimethyl ether over zeolite and zeotype catalysts: Evidence of parallel reaction paths to toluene and diphenylmethane

“…The important step in which the first olefins are formed was speculated to occur in a concerted bimolecular manner between carbene species (:CH2) and methanol/DME by Chang and Silvestri in the original MTH contribution [47]. Nevertheless, the authors lacked concluding evidence, and more than 20 mechanisms have been proposed in the literature to rationalize the formation of the first hydrocarbons since then [50,85].…”

Performance of CuO–ZnO–ZrO2 and CuO–ZnO–MnO as metallic functions and SAPO-18 as acid function of the catalyst for the synthesis of DME co-feeding CO2

“…Moreover, it has a lower environmental impact than methane, and is more suitable for the production of H 2 for fuel cells [3,4]. On the other hand, the transformation of DME into olefins, which takes place through the well-known hydrocarbon pool mechanism, has reached a considerable technological development [5]. Furthermore, syngas used in the production of DME is obtained from the large reserves of fossil resources alternative to oil (coal and mainly natural gas) [6], as well as from renewable energy sources (lignocellulosic biomass) and wastes of the consumer society, through highly developed technologies [7,8].…”

Insight into the Effect of Water on the Methanol-to-Olefins Conversion in H-SAPO-34 from Molecular Simulations and in Situ Microspectroscopy

“…[4][5][6][14][15][16] In general, current insight allows distinguishing four successive reaction stages of the conversion in H-SAPO-34 as represented in Scheme 1 6,17,18 and each of them may be affected by the presence of water. In the equilibration phase, the addition of water shifts the equilibrium to the methanol side as water is a reaction product of typical first stage reactions.…”