Aldol condensation of acetic acid with formaldehyde to acrylic acid over SiO2-, SBA-15-, and HZSM-5-supported V-P-O catalysts

Hu, Jing; Lü, Zhipeng; Yin, Hengbo; Xue, Wei; Wang, Aili; Shen, Lingqin; Liu, Shuxin

doi:10.1016/j.jiec.2016.06.018

Cited by 46 publications

(41 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In comparison with various reported catalysts (Table ), PW/SiO 2 (30 wt%) performs well with a higher acrylic acid selectivity than Cs/ZSM‐35 zeolite, V 2 O 5 –P 2 O 5 and V‐P‐O/SBA‐15 . Compared with the other catalysts, this catalyst shows a comparable total yield of desired products, acrylic acid and methyl acrylate, with a low catalyst amount (3 g).…”

Section: Resultsmentioning

confidence: 76%

“…Vapor‐phase aldol condensation may consist of the following three steps: (i) the base sites of the catalyst surface attacked carboxyl group of acetic acid to form a carbon anion; (ii) the acid sites attacked the carbonyl group of the adsorbed formaldehyde, increasing the electrophilicity of the carbon atom; and (iii) the activated acetic acid and formaldehyde reacted to form an intermediate, probably 3‐hydroxypropanoic acid, by the formation of CC bond. And then the adjacent acid sites catalyzed the rapid dehydration of the intermediate to form acrylic acid …”

Section: Resultsmentioning

confidence: 99%

“…Various catalysts have been employed in the aldol condensation reaction of acetic acid and formaldehyde, such as acids, bases and base–acid bifunctional catalysts, among which acid–base bifunctional catalysts attract most attention owing to the cooperation between acid and base active sites. The acidic sites, especially the weak ones, are essential to trigger the aldol condensation reaction, and the high acid amount is favorable for formaldehyde conversion.…”

Section: Resultsmentioning

confidence: 99%

“…In our previous work, V‐P‐O catalysts were prepared with various supports, and doped with a variety of alkali metals. It was found that high acid and alkali quantities led to high catalytic activities for the aldol condensation of acetic acid with formaldehyde to acrylic acid …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

Shen

Yin

et al. 2020

J of Chemical Tech & Biotech

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Shen

Yin

et al. 2020

J of Chemical Tech & Biotech

Self Cite

View full text Add to dashboard Cite

show abstract

“…Bi or Nb, or supported on e. g . silica or zeolites . The best reported result up to now is 97 % AA selectivity at 75 % formaldehyde conversion over VPO activated in a butane‐air mixture, possessing an optimal surface composition consisting of δ‐VOPO 4 and (VO) 2 P 2 O 7 species .…”

Section: Chemical Routes Of Acrylic Acidmentioning

confidence: 99%

Bio‐Acrylates Production: Recent Catalytic Advances and Perspectives of the Use of Lactic Acid and Their Derivates

et al. 2018

View full text Add to dashboard Cite

The production of drop‐in chemicals from bio‐based renewable sources is gaining a lot of momentum due to proven negative impact of fossil‐based economy on environment and society. In this Review, various bio‐derived platform molecules are assessed as renewable alternatives to fossil resources for the catalytic production of acrylates. Acrylic acid and its esters are key building blocks of a large number of high‐value oligomers and polymers in the current industry. In spite of the encouraging successes reported on gram or lab‐scale, real implementation of bio‐based examples remain scarce mainly due to the current high cost and limited availability of the bio‐based substrates. As lactic acid and their derivatives are one of the most promising feedstocks for bio‐acrylate production, they are the main focus of this Review.

show abstract

Gaseous catalytic condensation reaction of methyl propionate and formaldehyde in a fluidized bed reactor

Li¹,

Qi²,

Xie³

et al. 2019

Can J Chem Eng

View full text Add to dashboard Cite

A one-step aldol condensation reaction of methyl propionate and formaldehyde to produce methyl methacrylate is a promising environmentally sustainable strategy. In this work, the aldol condensation reaction was firstly conducted in a fluidized bed reactor using different types of catalysts. Zirconium and cesium-loaded SiO 2 and Al 2 O 3 acid-base bifunctional catalysts were prepared by wetness impregnation. Experimental results demonstrated the 15 % Cs-0.05 %Zr/SiO 2 (100-200 mesh) catalyst exhibited excellent catalytic performance. The effects of the supports, reaction temperature, carrier gas flow rate, and feed rate were investigated and optimized. When the flow rate of carrier gas (N 2 ) was 280 cm 3 /min and the feed rate was 0.6 cm 3 /min, the methyl propionate conversion was 25.2 % and the methyl methacrylate selectivity could reach 86.1 %. Although the catalytic activity of the 15 %Cs-0.05 %Zr/SiO 2 catalyst dropped with reaction time on stream due to carbon deposition on the surface of catalyst, its activity was restored by a simple regeneration method.

show abstract

Aldol condensation of acetic acid with formaldehyde to acrylic acid over SiO2-, SBA-15-, and HZSM-5-supported V-P-O catalysts

Cited by 46 publications

References 22 publications

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

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

Bio‐Acrylates Production: Recent Catalytic Advances and Perspectives of the Use of Lactic Acid and Their Derivates

Gaseous catalytic condensation reaction of methyl propionate and formaldehyde in a fluidized bed reactor

Contact Info

Product

Resources

About