Reaction conditions, temperature and pressure ranges, for various chemical recycling proc‐ esses of polyesters are sketched in Figure 1. So far, various recycling processes for polyesters have been investigated and developed, as reviewed by Paszun and Spychaj [1]: alcoholysis with methanol or ethanol, glycolysis with ethylene glycol or propylene glycol, alkali hydrolysis with sodium hydroxide, ...

The growing consumption of light olefins has stimulated intensive researches on methanol to olefin (MTO) process which possesses great advantages for coal conversion value-added chemicals in an environmentally benign way. catalysts commonly used MTO faces several challenges such as poor selectivity control, low hydrothermal stability and short lifetime. In the present study, we prepared a serie...

A series of MFI-type aluminosilicate catalysts with ultasound-assisted rapid hydrothermal and conventional high temperature methods were synthesized at temperatures 250 300°C. The pure MFI framework was obtained when sonochemical method used prior to the conditions 250°C 3h. samples characterized by XRD, FESEM, BET-BJH, FTIR, TPD-NH 3 TG/DTG analyses. morphological analysis indicated coffin sha...