ZSM-5 zeolite coatings on perlite support for MTO application

Efficient Methanol Dehydration to DME and Light Hydrocarbons by Submicrometric ZrO2-ZSM-5 Fibrillar Catalysts with a Shell-Like Structure

“…In order to attain a high yield towards low olefins, the use of a low zeolite crystal size has been claimed to be beneficial [31]. Aiming to allow a feasible operation of a fixed bed reactor, in terms of pressure drops, when using a very low zeolite particle and crystal size, the use of supported zeolite catalysts has been explored [32,33,69,70]. However, the preparation methodologies required for the synthesis of these structured catalysts involve several complex and costly stages.…”

“…Regarding the selectivity to the main reaction products, the high selectivity (100%) to DME in the temperature range of 200-300 ºC was remarkable. At higher temperatures (350-400 ºC), the selectivity to light hydrocarbons (C2-C4) was also outstanding (higher than 60 %), which makes these materials also very attractive for the methanol to olefins (MTO) process [33,71]. Regarding the stability of the catalyst, no deactivation was observed, at least, up to 10 hours of time on stream (at 400 ºC) (see Fig.…”

“…Ivanova et al [32], reported the preparation of ZSM-5/-𝛽SiC foam structured catalysts, which overperformed conventional zeolite catalysts beds, in terms of activity and selectivity to light olefins, for the MTO process. Zhang et al [33] prepared ZSM-5 zeolite supported catalysts via hydrothermal synthesis on perlite supports, which demonstrated a fairly good catalytic activity for the light olefins production by MTO. However, the preparation of these catalyst is not straightforward, making necessary complex experimental methodologies that involve several stages.…”