A DFT study of aldol condensation reaction in the process of ethanol to 1,3-butadiene on MgO/SiO2 surface

2021 ◽  
Author(s):  
Weiwei Zhang ◽  
Dan Fan ◽  
Yingzhe Yu
Keyword(s):  
Ethanol Production ◽  
Aldol Condensation ◽  
Condensation Reaction ◽  
Catalyst System ◽  
Dft Study ◽  
Sio2 Surface

MgO/SiO2, a significant catalyst system for ethanol production of 1,3-butadiene. The aldol condensation reaction is a key step in the reaction of ethanol to 1,3- butadiene. In this work, density...

A DFT study on the aldol condensation reaction on MgO in the process of ethanol to 1,3-butadiene: understanding the structure–activity relationship

2017 ◽  
Vol 19 (37) ◽  
pp. 25671-25682 ◽  
Author(s):  
Dan Fan ◽  
Xiuqin Dong ◽  
Yingzhe Yu ◽  
Minhua Zhang
Keyword(s):  
Aldol Condensation ◽  
Condensation Reaction ◽  
Structure Activity Relationship ◽  
Dft Study ◽  
Activity Relationship ◽  
Structure Activity

The mechanism of aldol condensation on MgO surfaces with different structures was investigated to illustrate the structure–activity relationship.

scholarly journals Nonanal Sensor Fabrication Using Aldol Condensation Reaction Inside Alkali-Resistant Porous Glass

2021 ◽  
pp. 1-1
Author(s):  
Masato Tsujiguchi ◽  
Takashi Aitoku ◽  
Hironori Takase ◽  
Yasuko Yamada Maru
Keyword(s):  
Porous Glass ◽  
Aldol Condensation ◽  
Condensation Reaction ◽  
Sensor Fabrication

Liquid-phase aldol condensation of cyclohexanone on aluminium and iron oxides

1982 ◽  
Vol 47 (8) ◽  
pp. 2235-2245 ◽  
Author(s):  
Zdeněk Vít ◽  
Lubomír Nondek ◽  
Jaroslav Málek
Keyword(s):  
Iron Oxides ◽  
Aldol Condensation ◽  
Condensation Reaction ◽  
Complex Function ◽  
Acid Sites ◽  
Basic Site ◽  
Catalyst Poisoning ◽  
Iron Hydroxides ◽  
Transient Complex ◽  
Kinetics Of

The kinetics of the aldol condensation of cyclohexanone in decalin were investigated at 210 °C on catalysts prepared by drying and calcining the aluminium and iron hydroxides at 110-850 °C. The effect of catalyst poisoning by benzoic acid and pyridine on the course of the condensation reaction and aldol retroaldolisation was also examined. The kinetics of the cyclohexanone condensation can be described by means of Langmuir-Hinshelwood equations which are in agreement with a mechanism involving adsorption of cyclohexanone on a basic site to form a transient complex, reaction of this complex with a cyclohexanone molecule affording the aldol, the rate determining interaction of the aldol with free basic and acid sites yielding 2-(1-cyclohexen-1-yl)cyclohexanone and water and desorption of these products from the catalyst surface. The proposed kinetic model is supported by the results of catalyst poisoning. The activity of aluminium and iron oxides in the condensation of cyclohexanone is a complex function of their basicity and acidity depending strongly on the calcination temperature.

Structure of a new oligomer of glutaraldehyde produced by aldol condensation reaction

1991 ◽  
Vol 56 (2) ◽  
pp. 694-697 ◽  
Author(s):  
Toshio Tashima ◽  
Masahiro Imai ◽  
Yoshihiro Kuroda ◽  
Shigemasa Yagi ◽  
Terumichi Nakagawa
Keyword(s):  
Aldol Condensation ◽  
Condensation Reaction

scholarly journals Hf-based metal–organic frameworks as acid–base catalysts for the transformation of biomass-derived furanic compounds into chemicals

2018 ◽  
Vol 20 (13) ◽  
pp. 3081-3091 ◽  
Author(s):  
Sergio Rojas-Buzo ◽  
Pilar García-García ◽  
Avelino Corma
Keyword(s):  
Aldol Condensation ◽  
Condensation Reaction ◽  
Metal Organic Frameworks ◽  
Acid Base ◽  
Base Catalysts ◽  
Metal Organic ◽  
Furanic Compounds

Hafnium-based metal–organic frameworks are promising catalysts for upgrading biomass derivatives via an aldol condensation reaction.

scholarly journals Synthesis of a novel arginine-modified starch resin and its adsorption of dye wastewater

RSC Advances ◽  
2020 ◽  
Vol 10 (67) ◽  
pp. 41251-41263
Author(s):  
Hao Zhang ◽  
Panlei Wang ◽  
Yi Zhang ◽  
Bowen Cheng ◽  
Ruoying Zhu ◽  
...  
Keyword(s):  
Aldol Condensation ◽  
Condensation Reaction ◽  
Side Reaction ◽  
Hydroxyl Group ◽  
Modified Starch ◽  
Dye Wastewater ◽  
Aldehyde Groups ◽  
Starch Molecule

In the side reaction, the two aldehyde groups in the glutaraldehyde molecules should undergo an aldol condensation reaction with the hydroxyl group in the starch molecule, which has been corrected.

ChemInform Abstract: Direct Aldol Condensation Reaction of Ethyl Diazoacetate with Trifluoromethyl Ketones.

ChemInform ◽  
2012 ◽  
Vol 43 (10) ◽  
pp. no-no
Author(s):  
Han-Feng Cui ◽  
Lian Wang ◽  
Li-Jun Yang ◽  
Jing Nie ◽  
Yan Zheng ◽  
...  
Keyword(s):  
Aldol Condensation ◽  
Condensation Reaction ◽  
Ethyl Diazoacetate ◽  
Trifluoromethyl Ketones
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