Hierarchically structured ZSM-5 obtained by desilication as new catalyst for DME synthesis from methanol

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

“…The incorporation of ZnO and Al 2 O 3 increases the stability of Cu active sites for methanol synthesis and, on the other hand, the limitation of the acid strength of the sites of HZSM-5 zeolite is a key factor to minimize the formation of coke from the hydrocarbons obtained as by-products [21][22][23]. García-Trenco et al, have studied the effect of the acidity and the porous structure of the zeolite [24,25] and the method used for the mixture of both metallic and acid functions [26], on the performance of CuO-ZnO-Al 2 O 3 /HZSM-5 catalysts.…”

Hierarchically structured ZSM-5 obtained by optimized mesotemplate-free method as active catalyst for methanol to DME conversion

“…19,20 To the best of our knowledge, only a few papers regarding the catalytic performance of micro-mesoporous systems with ZSM-5 zeolite properties in the synthesis of DME were published. In our previous studies 21 we examined micromesoporous ZSM-5 obtained by desilication of the parent zeolite with 0.1 M NaOH solution for 1, 2 and 4 h. The desilicated samples exhibited higher catalytic activity and stability in DME synthesis in comparison to the conventional zeolite. Wei et al 22 investigated the catalytic activity of desilicated ZSM-5 (using 0.2 M NaOH) with different Si/Al ratios, and reported an improvement in the selectivity to DME.…”

Fabrication of Hollow Mesoporous Nanosized ZSM‐5 Catalyst with Superior Methanol‐to‐Hydrocarbons Performance by Controllable Desilication

“…XRD patterns of these zeolites are shown in Figure . Although their intrinsic MFI structures were well preserved upon alkali treatment, the peak intensity decreased in different degrees relative to that of P‐Z5 sample. This results from the different extraction degrees of silicon species from the zeolite framework under different treatment conditions.…”