Aqueous Phase Aldol Condensation of Formaldehyde and Acetone on Anatase TiO 2 (101) Surface: A Theoretical Investigation

ChemCatChem ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1220-1229 ◽  
Author(s):  
Yuntao Zhao ◽  
Xinli Zhu ◽  
Hua Wang ◽  
Jinyu Han ◽  
Donghai Mei ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Theoretical Investigation ◽  
Aldol Condensation

Performance of basic mixed oxides for aqueous-phase 5-hydroxymethylfurfural-acetone aldol condensation

2017 ◽  
Vol 201 ◽  
pp. 221-231 ◽  
Author(s):  
Jennifer Cueto ◽  
Laura Faba ◽  
Eva Díaz ◽  
Salvador Ordóñez
Keyword(s):  
Aqueous Phase ◽  
Mixed Oxides ◽  
Aldol Condensation

scholarly journals In situ ATR-IR studies in aqueous phase reforming of hydroxyacetone on Pt/ZrO2 and Pt/AlO(OH) catalysts: The role of aldol condensation

2018 ◽  
Vol 232 ◽  
pp. 454-463 ◽  
Author(s):  
Kamila Koichumanova ◽  
Anna Kaisa K. Vikla ◽  
Remedios Cortese ◽  
Francesco Ferrante ◽  
K. Seshan ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Aldol Condensation ◽  
Aqueous Phase Reforming ◽  
Ir Studies

Selective aldol condensation of biomass-derived levulinic acid and furfural in aqueous-phase over MgO and ZnO

2016 ◽  
Vol 18 (11) ◽  
pp. 3430-3438 ◽  
Author(s):  
Guanfeng Liang ◽  
Aiqin Wang ◽  
Xiaochen Zhao ◽  
Nian Lei ◽  
Tao Zhang
Keyword(s):  
Aqueous Phase ◽  
Levulinic Acid ◽  
High Selectivity ◽  
Aldol Condensation ◽  
Major Product

MgO affords a high selectivity towards δ-furfurylidenelevulinic acid, while ZnO gives β-furfurylidenelevulinic acid as the major product in the aldol condensation of biomass-derived levulinic acid and furfural in the aqueous-phase.

Aqueous-phase furfural-acetone aldol condensation over basic mixed oxides

2012 ◽  
Vol 113-114 ◽  
pp. 201-211 ◽  
Author(s):  
Laura Faba ◽  
Eva Díaz ◽  
Salvador Ordóñez
Keyword(s):  
Aqueous Phase ◽  
Mixed Oxides ◽  
Aldol Condensation

Characterization of Chemical Impurities in Glutaraldehyde

1975 ◽  
Vol 33 ◽  
pp. 620-621
Author(s):  
B. J. Grenon ◽  
A. J. Tousimis
Keyword(s):  
Glutaric Acid ◽  
Spectroscopic Analysis ◽  
Aldol Condensation ◽  
Condensation Product ◽  
Amorphous Solid ◽  
Water Soluble ◽  
Impurity Component ◽  
Chemical Impurities ◽  
Soluble Liquid

Ever since the introduction of glutaraldehyde as a fixative in electron microscopy of biological specimens, the identification of impurities and consequently their effects on biologic ultrastructure have been under investigation. Several reports postulate that the impurities of glutaraldehyde, used as a fixative, are glutaric acid, glutaraldehyde polymer, acrolein and glutaraldoxime.Analysis of commercially available biological or technical grade glutaraldehyde revealed two major impurity components, none of which has been reported. The first compound is a colorless, water-soluble liquid with a boiling point of 42°C at 16 mm. Utilizing Nuclear Magnetic Resonance (NMR) spectroscopic analysis, this compound has been identified to be — dihydro-2-ethoxy 2H-pyran. This impurity component of the glutaraldehyde biological or technical grades has an UV absorption peak at 235nm. The second compound is a white amorphous solid which is insoluble in water and has a melting point of 80-82°C. Initial chemical analysis indicates that this compound is an aldol condensation product(s) of glutaraldehyde.

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