Generating active intermediates from deactivating coke molecules by a regeneration process that produces valuable syngas as by-product almost sounds too good to be true. In recent publication in Nature Communications, Zhou and co-workers demonstrated this innovative approach converting into naphthalenic cations steam cracking the industrially used SAPO-34 material, after it was methanol-to-olef...

The effect of water over the performance Methanol-to-Olefins process was studied in a conventional fluidized bed reactor (CFBR) and two-zone (TZFBR). Both them contained same SAPO-34-based catalyst, prepared by agglomeration with bentonite alumina. In first section this paper, TZFBR for wide range temperatures (350–600 °C, ?T = 50 °C), two oxygen concentrations fed to lower zone (7.5 10.8% 500,...

Methanol is a key reaction intermediate formed on MnO x that synergistically reacts with SAPO-34 to produce light olefins.

Recent progress reveals that, in the methanol-to-olefin (MTO) process on acidic zeolites, the conversion of an equilibrium mixture of methanol and DME is dominated by a "hydrocarbon pool" mechanism. However, the initial C-C bond formation, that is, the chemistry during the kinetic "induction period" leading to the reactive hydrocarbon pool, still remains unclear. With the application of a stopp...

Identification of the catalyst characteristics correlating with key performance parameters including selectivity and stability is to rational design. Herein we focused on identification property-performance relationships in methanol-to-olefin (MTO) process by studying detail catalytic behaviour MFI, MEL their respective intergrowth zeolites. The detailed material characterization reveals that b...

Highly siliceous ZSM-5 nanocatalysts can dehydrate methanol to a wide range of hydrocarbons. In this study, the development of hierarchical H-ZSM-5 nanocatalysts (Si/Al=200) were reported for the methanol-toolefins (MTO) reaction. The nanocatalysts were prepared through a hydrothermal technique and treated by NaOH desilication. The parent and desilicated nanocatalysts were characterized using F...

SSZ-13 materials have been synthesized with varying amounts of Al to produce samples with different concentrations of Brønsted acid sites, and consequently, these SSZ-13 materials contain increasing numbers of paired Al heteroatoms with increasing Al content. These materials were then characterized and tested as catalysts for the methanol-toolefins (MTO) reaction at 400 °C and 100% methanol con...