Direct dimethyl ether synthesis from syngas on copper–zeolite hybrid catalysts with a wide range of zeolite particle sizes

Kinetic Investigation of η-Al2O3 Catalyst for Dimethyl Ether Production

“…1) or via the dehydration of methanol over solid catalysts such as Al 2 O 3 (Eq. 2), according to the following reactions [1][2][3][4][5][6]:…”

Implanting Copper−Zinc Nanoparticles into the Matrix of Mesoporous Alumina as a Highly Selective Bifunctional Catalyst for Direct Synthesis of Dimethyl Ether from Syngas

“…Nowadays, dimethyl ether (DME) has attracted more and more attention concerning its application acting as both an industrially important chemical materials and a clean alternative fuel. [1][2][3][4][5] DME was generally produced by two routes: one is methanol dehydration catalyzed by an acidic catalyst, in which methanol is previously synthesized by catalyzed hydrogenation of syngas; the other is a direct synthesis route from one-pot transformation of syngas over a bifunctional catalyst. [5][6][7][8][9][10][11] The latter is regarded as a promising pathway for DME production.…”

Ethanol as a Binder to Fabricate a Highly‐Efficient Capsule‐Structured CuO−ZnO−Al2O3@HZSM‐5 Catalyst for Direct Production of Dimethyl Ether from Syngas

“…[2][3][4][21][22][23][24][25][26][27][28][29][30] The hybrid catalysts prepared by physically mixing methanol synthesis catalyst (CuÀ ZnOÀ Al 2 O 3 ) and methanol dehydration catalyst (solid acid) were attempted to catalyze the STD process. [31][32][33][34][35][36][37][38][39][40] The methanol synthesis unit in the hybrid catalysts have been focused on tuning catalysts composition, [21][22][23][24][25] synthetic method, [26,27] preparation parameters of Cu-based catalysts [28,29] and alternatives to Cu-based. [30] The methanol dehydration unit in the hybrid catalysts has been focused on the modulation of particle size, [31] structure [32][33][34] and modification of acidic sites by metal [35][36][37][38] of zeolite and γ-Al 2 O 3 .…”

“…[31][32][33][34][35][36][37][38][39][40] The methanol synthesis unit in the hybrid catalysts have been focused on tuning catalysts composition, [21][22][23][24][25] synthetic method, [26,27] preparation parameters of Cu-based catalysts [28,29] and alternatives to Cu-based. [30] The methanol dehydration unit in the hybrid catalysts has been focused on the modulation of particle size, [31] structure [32][33][34] and modification of acidic sites by metal [35][36][37][38] of zeolite and γ-Al 2 O 3 . [27][28][29]39,40] Especially, HZSM-5 has been considered as an excellent candidate for methanol dehydration.…”

“…[27][28][29]39,40] Especially, HZSM-5 has been considered as an excellent candidate for methanol dehydration. [31][32][33][34][35][36][37][38] In addition, reaction conditions, [41][42][43][44][45][46][47][48] catalyst regeneration [49] and interaction between different functional components [50] have also been investigated. However, some deficiencies still exist in STD process over the hybrid catalyst.…”