Influence of Mg–Al Mixed Oxide Compositions on Their Properties and Performance in Aldol Condensation

The influence of chemical composition of Mg–Al mixed oxides on their properties and catalytic performance in aldol condensation of furfural and acetone was studied. Pure alumina, Mg–Al layered double hydroxides with a wide range of Mg/Al molar ratios from 0.5 to 15, and pure magnesia were prepared by the same synthesis method, and corresponding oxides were produced by calcination of the as-prepared samples at T = 450 °C. The physicochemical properties of the samples were investigated by XRD, N2 physisorption, SEM, CO2-TPD, and NH3-TPD, and their catalytic performance was evaluated in aldol condensation of furfural and acetone. SEM images revealed that the Al content in the samples influenced the size and the morphology of both large agglomerates and plate-like crystals. The CO2-TPD measurements proved that the concentration of basic sites and the distribution of their strengths was determined by the Mg/Al molar ratio in the Mg–Al mixed oxides. However, over the whole range of Mg/Al compositions studied he...

[1]  O. Kikhtyanin,et al.  Surface Properties of Hydrotalcite-Based Zn(Mg)Al Oxides and Their Catalytic Activity in Aldol Condensation of Furfural with Acetone , 2017 .

[2]  Dong Nguyen Thanh,et al.  Nanosized TiO2: a promising catalyst for the aldol condensation of furfural with acetone in biomass upgrading , 2016 .

[3]  J. Čejka,et al.  Toward understanding of the role of Lewis acidity in aldol condensation of acetone and furfural using MOF and zeolite catalysts , 2015 .

[4]  O. Kikhtyanin,et al.  Comparative study of physico-chemical properties of laboratory and industrially prepared layered double hydroxides and their behavior in aldol condensation of furfural and acetone , 2015 .

[5]  David Kubička,et al.  Aldol condensation of furfural and acetone over MgAl layered double hydroxides and mixed oxides , 2014 .

[6]  Dachuan Shi,et al.  Evaluating strategies for catalytic upgrading of pyrolysis oil in liquid phase , 2014 .

[7]  D. Kubička,et al.  The Effect of Thermal Pre-Treatment on Structure, Composition, Basicity and Catalytic Activity of Mg/Al Mixed Oxides , 2013, Topics in Catalysis.

[8]  Salvador Ordóñez,et al.  Aqueous-phase furfural-acetone aldol condensation over basic mixed oxides , 2012 .

[9]  L. E. Borges,et al.  Mg and Al mixed oxides and the synthesis of n-butanol from ethanol , 2012 .

[10]  S. Ordóñez,et al.  Hydrotalcite-derived mixed oxides as catalysts for different C–C bond formation reactions from bioorganic materials , 2011 .

[11]  Xiao-hui Liu,et al.  Synthesis of nanosized mesoporous Co–Al spinel and its application as solid base catalyst , 2011 .

[12]  J. Fierro,et al.  Catalytic and structural properties of co-precipitated Mg–Zr mixed oxides for furfural valorization via aqueous aldol condensation with acetone , 2011 .

[13]  D. M. Alonso,et al.  Catalytic conversion of biomass to biofuels , 2010 .

[14]  Lijing Gao,et al.  Biodiesel Preparation from Jatropha curcas Oil Catalyzed by Hydrotalcite Loaded With K2CO3 , 2010, Applied biochemistry and biotechnology.

[15]  C. A. Henriques,et al.  Influence of basic properties of Mg,Al-mixed oxides on their catalytic activity in knoevenagel condensation between benzaldehyde and phenylsulfonylacetonitrile , 2009 .

[16]  Xin Deng,et al.  Activation of Mg-Al hydrotalcite catalysts for transesterification of rape oil , 2008 .

[17]  R. Moreno-Tost,et al.  MgM (M = Al and Ca) oxides as basic catalysts in transesterification processes , 2008 .

[18]  C. Veloso,et al.  Condensation of glyceraldehyde acetonide with ethyl acetoacetate over Mg, Al-mixed oxides derived from hydrotalcites , 2008 .

[19]  P. Parikh,et al.  Solvent free aldol condensation of propanal to 2-methylpentenal using solid base catalysts , 2007 .

[20]  James A. Dumesic,et al.  Single-reactor process for sequential aldol-condensation and hydrogenation of biomass-derived compounds in water , 2006 .

[21]  J. I. D. Cosimo,et al.  Aldol condensation of citral with acetone on MgO and alkali-promoted MgO catalysts , 2006 .

[22]  Gil Garrote,et al.  Study of the hydrolysis of sugar cane bagasse using phosphoric acid , 2006 .

[23]  R. Dziembaj,et al.  Aldol condensation of citral and acetone over mesoporous catalysts obtained by thermal and chemical activation of magnesium–aluminum hydrotalcite-like precursors , 2006 .

[24]  M. Zawadzki,et al.  Mg,Al-mixed oxide system: Synthesis under hydrothermal conditions, physico-chemical characterisation and application as an efficient catalyst for imidazole methylation , 2005 .

[25]  E. Kemnitz,et al.  Application of calcined Mg-Al hydrotalcites for Michael additions : an investigation of catalytic activity and acid-base properties , 2005 .

[26]  Karen Wilson,et al.  Structure-reactivity correlations in MgAl hydrotalcite catalysts for biodiesel synthesis , 2005 .

[27]  J. Sueiras,et al.  Study of alkaline-doping agents on the performance of reconstructed Mg–Al hydrotalcites in aldol condensations , 2005 .

[28]  J. Sueiras,et al.  Aldol condensations over reconstructed Mg-Al hydrotalcites: structure-activity relationships related to the rehydration method. , 2005, Chemistry.

[29]  F. Cavani,et al.  How basic properties of MgO-based mixed oxides affect the catalytic performance in gas-phase and liquid-phase methylation of m-cresol , 2005 .

[30]  M. Serio,et al.  Heterogeneous basic catalysts for the transesterification and the polycondensation reactions in PET production from DMT , 2004 .

[31]  J. I. D. Cosimo,et al.  Effect of the chemical composition on the catalytic performance of MgyAlOx catalysts for alcohol elimination reactions , 2003 .

[32]  F. Cavani,et al.  Heterogeneous basic catalysts as alternatives to homogeneous catalysts: reactivity of Mg/Al mixed oxides in the alkylation of m-cresol with methanol , 2002 .

[33]  D. D. De Vos,et al.  Hydrotalcite-like anionic clays in catalytic organic reactions , 2001 .

[34]  E. Iglesia,et al.  Structure and Surface and Catalytic Properties of Mg-Al Basic Oxides , 1998 .

[35]  Angelo Vaccari,et al.  Preparation and catalytic properties of cationic and anionic clays , 1998 .

[36]  T. Pinnavaia,et al.  Basic Properties of Mg2+1-xAl3+x Layered Double Hydroxides Intercalated by Carbonate, Hydroxide, Chloride, and Sulfate Anions , 1995 .

[37]  T. Pinnavaia,et al.  Water content and particle texture of synthetic hydrotalcite-like layered double hydroxides , 1995 .

[38]  E. Garrone,et al.  Textural Properties and Catalytic Activity of Hydrotalcites , 1995 .

[39]  Robert J. Davis,et al.  Characterization of magnesium-aluminum mixed oxides by temperature-programmed reaction of 2-propanol , 1994 .

[40]  Robert J. Davis,et al.  Aromatization of n-Hexane by Aluminium-Stabilized Magnesium Oxide-Supported Noble Metal Catalysts , 1993 .

[41]  Fabrizio Cavani,et al.  Hydrotalcite-type anionic clays: Preparation, properties and applications. , 1991 .

[42]  H. Fujita,et al.  Synthesis of hydrotalcite-like compounds and their physico-chemical properties , 1988 .

[43]  Shigeo Miyata.  Physico-Chemical Properties of Synthetic Hydrotalcites in Relation to Composition , 1980 .