Aldol Condensation Reaction of Methyl Acetate and Formaldehyde Over Cesium Oxide Supported on Silica Gel: An Experimental and Theoretical Study

Influence of Al Oxides on Cs-SiO2 Catalysts for Vapor Phase Aldol Condensation of Methyl Acetate and Formaldehyde

“…Yan et al prepared the 5Cs/SBA-15 catalysts with a Si–O–Cs structure as active sites, which exhibited the highest catalytic activities with 48.4% conversion for Ma and 95.0% selectivity for MA. He et al , synthesized SBA-15 loaded alkali metal oxides catalysts, M/SBA-15 (M = Li, Na, K, Rb, Cs), via the impregnation method for the aldol condensation reaction of Fa with Ma to synthesize MA. The highest yield of MA of 31% was obtained over the Cs/SBA-15 catalyst under optimal conditions.…”

Cesium Loaded on an Al-Modified Silica Support Catalyst for Methyl Acrylate Synthesis by Aldol Condensation of Methyl Acetate and Formaldehyde

“…However, the specific BET area and pore volume have a certain downward trend. This may be due to the effect of the active components on the support structure at a high component content. , Moreover, the pore diameter increased, suggesting that the small pore was blocked with the increase of the Cs loading amount. , …”

Nano-sized H-ZSM-5 zeolite catalyzes aldol condensation reaction to prepare methyl acrylate and acrylic acid

“…6,7 Many previous studies have reported that the aldol condensation reaction can be catalyzed by solid base or base-acid bifunctional catalysts. [8][9][10][11][12][13][14][15][16][17] Solid base catalysts such as alkali metals or alkaline earth metals supported on SiO 2 or Al 2 O 3 carriers can achieve high selectivity for MA and AA. However, these catalysts deactivate rapidly and their singlepass lifetimes are short, meanwhile the loss of basic catalytic centers caused by acidic products and water will make the entire lifetimes of these catalysts short.…”

“…However, these catalysts deactivate rapidly and their singlepass lifetimes are short, meanwhile the loss of basic catalytic centers caused by acidic products and water will make the entire lifetimes of these catalysts short. [8][9][10][11][12] Base-acid bifunctional catalysts such as V 2 O 5 -P 2 O 5 systems also suffer from the same problem above. [13][14][15][16][17] Zeolite is a kind of crystalline material with stable and porous structure, which can be resistant to acid and water generated in the aldol condensation reaction.…”

“…However, these catalysts deactivate rapidly and their single-pass lifetimes are short, meanwhile the loss of basic catalytic centers caused by acidic products and water will make the entire lifetimes of these catalysts short. 8–12 Base–acid bifunctional catalysts such as V 2 O 5 –P 2 O 5 systems also suffer from the same problem above. 13–17…”