Cooperative catalytic effects between the penta-coordinated Al and Al2O3 in Al2O3-AlPO4 for aldol condensation of methyl acetate with formaldehyde to methyl acrylate

2022 ◽  
Author(s):  
Zhenyu Wu ◽  
Zengxi Li ◽  
Chunshan Li
Keyword(s):  
Methyl Acrylate ◽  
Methyl Acetate ◽  
Aldol Condensation ◽  
Catalytic Effects

Formation of Methyl Acrylate from Methyl Acetate and Formaldehyde Condensation over Solid Base Catalysts

2012 ◽  
Vol 629 ◽  
pp. 376-380 ◽  
Author(s):  
Ya Nan Wang ◽  
Qun Long Wang ◽  
Huan Hui Chen ◽  
Jia Lei Zhang ◽  
Zhi Rong Zhu
Keyword(s):  
Acrylic Acid ◽  
Vapor Phase ◽  
Methyl Acrylate ◽  
Methyl Acetate ◽  
Aldol Condensation ◽  
Solid Base ◽  
Base Property ◽  
Support Materials ◽  
Solid Base Catalysts ◽  
Base Catalysts

The vapor-phase aldol condensation of methyl acetate (MeOAC) with formaldehyde (HCHO) to form methyl acrylate was investigated over solid base catalysts. A variety of solid base catalysts were prepared by loading Cs2O over SiO2 or Al2O3 as the support materials. The properties of the solid base catalysts were characterized by XRD, BET and CO2-TPD. The results of the vapor-phase aldol condensation indicated that SiO2 and Al2O3 modified with Cs2O showed high conversation of methyl acetate and high selectivity of methyl acrylate. 22.6% conversation of methyl acetate and 16.5% yield of acrylic acid and methyl acrylate were obtained over Cs-Al2O3. In addition, Cs-SiO2 exhibited about 42% selectivity to methyl acetate. The high yield of acrylic acid and methyl acrylate is attributed to the high base property of catalysts.

Synthetic Technics of Methyl Acrylate through Aldol Condensation with a Multisubsection Fixed-Bed Reactor

2011 ◽  
Vol 233-235 ◽  
pp. 2859-2862 ◽  
Author(s):  
Tao Jing ◽  
Jing Zhi Tian ◽  
De Zhi Sun
Keyword(s):  
Methyl Acrylate ◽  
Conversion Rate ◽  
Methyl Acetate ◽  
Catalytic Properties ◽  
Aldol Condensation ◽  
Condensation Reaction ◽  
Fixed Bed ◽  
Space Velocity ◽  
Fixed Bed Reactor ◽  
Ester Yield

Two types of catalysts, V2O5-P2O5/SiO2and Cs-Sb2O5/SiO2, were separately prepared with SiO2as carrier. Their catalytic properties were investigated in the process of synthesizing methyl acrylate through aldol condensation with methylal and methyl acetate, and the influence of the catalyst’s filling up technique on the reaction was studied. Reactions were performed in a fixed-bed reactor. The research results indicate that aldol condensation reaction is effectively promoted when the two catalysts were filled up in appropriate subsections of the reaction tube. Specifically, when V-Si-P Oxide was filled up at the 4thsubsection and Cs-Sb2O5/SiO2catalyst at the 6thsubsection with the temperature of the reactor at 400 °C and the mol ratio of methyl acetate and methylal at 1.6:1 and the space velocity at 3.2 h-1, then the conversion rate of methylal was 50.9%, the selectivity of methyl acrylate was 90.63%, and the ester yield of methyl acrylate was 46.15%.

Spherical P-modified catalysts for heterogeneous cross-aldol condensation of formaldehyde with methyl acetate for methyl acrylate production

2017 ◽  
Vol 95 (11) ◽  
pp. 2104-2111 ◽  
Author(s):  
Cuncun Zuo ◽  
Chunshan Li ◽  
Tingting Ge ◽  
Xinpeng Guo ◽  
Suojiang Zhang
Keyword(s):  
Methyl Acrylate ◽  
Methyl Acetate ◽  
Aldol Condensation

Preparation of Cs–La–Sb/SiO2 catalyst and its performance for the synthesis of methyl acrylate by aldol condensation

RSC Advances ◽  
2015 ◽  
Vol 5 (41) ◽  
pp. 32826-32834 ◽  
Author(s):  
Yanan Wang ◽  
Xuewei Lang ◽  
Guoqing Zhao ◽  
Huanhui Chen ◽  
Yiwei Fan ◽  
...  
Keyword(s):  
Methyl Acrylate ◽  
Methyl Acetate ◽  
Aldol Condensation ◽  
Catalytic Performance

The bifunctional Cs–La–Sb/SiO2 catalyst prepared by ultrasonic impregnation showed good catalytic performance and stability for the synthesis of methyl acrylate by aldol condensation of formaldehyde and methyl acetate.

Synthesis of Methyl Acrylate by Aldol Condensation of Methyl Acetate with Formaldehyde Over Al2O3-Supported Barium Catalyst

2017 ◽  
Vol 147 (6) ◽  
pp. 1540-1550 ◽  
Author(s):  
Qiang Bao ◽  
Tiantong Bu ◽  
Jianbiao Yan ◽  
Chunlei Zhang ◽  
Chunli Ning ◽  
...  
Keyword(s):  
Methyl Acrylate ◽  
Methyl Acetate ◽  
Aldol Condensation

Effect of Metal Ion in Bulk VPO in Aldol Condensation of Formaldehyde and Methyl Acetate to Methyl Acrylate

2017 ◽  
Vol 57 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Dan Yang ◽  
Chidchon Sararuk ◽  
Hui Wang ◽  
Suojiang Zhang ◽  
Zengxi Li ◽  
...  
Keyword(s):  
Methyl Acrylate ◽  
Metal Ion ◽  
Methyl Acetate ◽  
Aldol Condensation

Catalysts, kinetics and process optimization for the synthesis of methyl acrylate over Cs–P/γ-Al2O3

2016 ◽  
Vol 6 (16) ◽  
pp. 6417-6430 ◽  
Author(s):  
Guoliang Zhang ◽  
Honghua Zhang ◽  
Dan Yang ◽  
Chunshan Li ◽  
Zhijian Peng ◽  
...  
Keyword(s):  
Process Optimization ◽  
Methyl Acrylate ◽  
Methyl Acetate ◽  
Bifunctional Catalysts ◽  
One Step

Bifunctional catalysts Cs–P/γ-Al2O3 were developed and firstly applied in a one-step synthesis of methyl acrylate using methyl acetate (Ma) and formaldehyde (FA).

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