Acrylic acid synthesis via condensation of acetic acid and formaldehyde catalyzed by silica aerogel‐supported SiW/PW/PMo oxides

Abstract

BACKGROUND: The demand for acrylic acid continues to increase rapidly due to its widespread application. The traditional production of acrylic acid originates from non-sustainable propylene oxidation. Considering the environmental requirements and economic sustainable development, it is of great significance to exploit new routes to replace the petrochemical route.RESULTS: Comparison of silica aerogel-supported SiW/PW/PMo catalysts shows that PW/SiO 2 catalyst with 30 wt% loading and calcined at 450°C provides the best performance for the condensation of acetic acid and formaldehyde. Increasing the reaction temperature from 340 to 400°C leads to the best acrylic acid selectivities of 87.1-84.2% at formaldehyde conversions of 35.7-45.2%. CONCLUSIONS: The catalytic performance of PW/SiO 2 catalyst increases with increasing PW loading. The acidic and basic sites of the catalyst, especially the weak ones, are of vital importance to the synthesis of acrylic acid via the aldol condensation of acetic acid and formaldehyde.

Glycerol-based sustainably sourced resin for volumetric printing

“…In this context, glycerol, lactic acid, acetic acid, and furfural have all been demonstrated to be suitable biobased feedstocks to produce acrylic acid. 19,20 As petroleum feedstocks continue to be depleted and processes are further developed, we expect that bioderived acrylic acid will become increasingly commercially competitive in the future.…”

High-efficiency and durable V–Ti–Nb ternary catalyst prepared by a wet-solid mechanochemical method for sustainably producing acrylic acid via acetic acid–formaldehyde condensation

“…[1][2][3][4][5][6][7] Presently, the mainstream production process of AA (MA) is a two-step oxidation of propylene. [8][9][10][11] However, petroleum-based propylene feedstock has been considerably affected by the world oil market. This drawback cannot be ignored, even though the superiority of the mainstream production process in terms of economic efficiency and simplicity of device design has been demonstrated.…”