Effect of Lewis basicity on the continuous gas phase condensation of benzaldehyde with acetophenone over MgO

Porous Magnesium Oxide by Twin Polymerization: From Hybrid Materials to Catalysis

“…Applications of MgO are of growing interest and play a significant role in, for example, electronic and photonic devices [1] and as protective coatings. [2,3] Due to the Lewis basicity of MgO [4,5] it can be successfully used as a catalyst in, e. g., the ring-opening polymerization of lactide, [6,7] Knoevenagel and Claisen-Schmidt condensations, [8,9] asymmetric Henry and Michael addition reactions, [5,10] and in Meerwein-Ponndorf-Verley (MPV) reductions, [11][12][13][14][15][16] where the shape and size of the MgO particles are influencing the catalytic activities significantly. [11,[17][18][19][20][21] Furthermore, supporting, for example, MgAl 2 O 4 on MgO enhances the yield of 1-phenoxy-2-propanol in the catalytic reaction of phenol with propylene oxide.…”

“…Twin polymerization also enables the formation of porous B, [52] Sn, [59,60] Ge, [61] W, [62] Ti, [63,64] Zr, [65] and Hf [65] oxides. Iron oxide nanoparticle-loaded SiO 2 and carbon materials are formed, when organometallic Si(OCH 2 Fc) 4 (Fc = Fe(η 5 -C 5 H 4 )(η 5 -C 5 H 5 )) was polymerized under typical twin polymerization conditions. [66] Herein, we describe the synthesis and characterization of magnesium-based twin monomers of the type [Mg ( (3, L = tmeda).…”

Twin Polymerization: A Unique Strategy towards Versatile Functional Materials

“…Magnesium oxide is a non-toxic, environmentally friendly material of low cost, playing a substantial role in electronic and photonic devices, as protective coating, [123][124][125] and, due to its Lewis basicity, it can be used directly as catalyst in a variety of conversions, [126][127][128][129][130] or as catalyst support. [131][132][133] Aside from diverse synthetic methodologies including the sol-gel technology, [134][135][136][137] template synthesis, [138][139][140][141][142][143] and thermal decomposition processes, [128,[144][145][146] [147] These compounds produce, when used as twin monomers, in the thermal-induced TP interpenetrating hybrid materials HM_1 and HM_2 (Scheme 14).…”