Open Access Open Access  Restricted Access Subscription Access

Mg-Al-MoO4 layered double hydroxides used as catalysts for the oxidation of styrene

Nguyen Tien Thao, Nguyen Duc Trung, Dang Van Long, Vu Dong Thuc

Abstract


Mg-Al layered double hydroxides have been prepared by the precipitation method and characterized by the physical methods such as XRD, EDS, SEM. The synthesized solids showed the layered hydroxide structure with molybdate and carbonate anions as interlayer compensating anions in the uniform particles. While Mg-Al-CO3 is inactive for the liquid oxidation of styrene, Mg-Al-MoO4–LDH catalyst exhibits a good activity in the conversion of styrene into benzaldehyde and phenyl oxirane. The catalytic activity and product selectivity depend on the reaction conditions and oxidant nature. The styrene conversion is moderate about 10-15 % and the total selectivity to benzaldehyde and styrene oxide reached 99 % as air and t-butyl hydrogen peroxide used as milder oxidants.

Keywords. Benzaldehyde, styrene, molybdate, hydrotalcite, oxidation.


Keywords


Benzaldehyde, styrene, molybdate, hydrotalcite, oxidation

References


Vicente Rives. Layered Double Hydroxides: Present and Future, Nova Science Publishers, Inc., 2001.

N. Tien Thao, H. Huu Trung. Selective oxidation of styrene over Mg-Co-Al hydrotalcite like-catalysts using air as oxidant, Catal. Commun., 45, 153-157 (2014).

Elizabeth Gardner, Thomas J. Pinnavaia. On the nature of selective olefin oxidation catalysts derived from molybdate- and tungstate-intercalated layered double hydroxides, Appl. Catal. A, 167, 65-74

(1998).

Rong-Chang Zeng, Zhen-Guo Liu, Fen Zhang, Shuo-Qi Li,a Hong-Zhi Cui and En-Hou Han. Corrosion of molybdate intercalated hydrotalcite coating on AZ31 Mg alloy, J. Mater. Chem. A, 2, 13049-13057 (2014).

G. Busca, U. Costantino, F. Marmottini, T. Montanari, P. Patrono, F. Pinzari, G. Ramis. Methanol steam reforming over ex-hydrotalcite Cu–Zn–Al catalysts, Appl. Catal. A 310, 70-78 (2006).

Nguyen Tien, Thao Le Thi Kim Huyen. Catalytic oxidation of styrene

over Cu-doped hydrotalcites, Chemical Engineering Journal, 279, 840-850 (2015).

Elizabeth Gardner, Thomas J. Pinnavaia. On the nature of selective olefin oxidation catalysts derived from molybdate- and tungstate-intercalated layered double hydroxides, Appl. Catal. A 167, 65-74 (1998).

S. C. Laha and R. Kumar. Selective Epoxidation of styrene to styrene oxide over TS-1 using urea-hydrogen peroxide as oxidizing agent, J. Catal., 204, 64-70 (2001).

Rodica Zavoianu, Ruxandra Bırjega, Octavian Dumitru Pavel, Anca Cruceanu, Mihai Alifanti. Hydrotalcite like compounds with low Mo-loading active catalysts for selective oxidation of cyclohexene with hydrogen peroxide, Appl. Catal. A 286, 211-220 (2005).

Y. Wang, Q. Zhang, T. Shishido and K. Takehira. Characterizations of Iron-Containing MCM-41 and Its Catalytic Properties in Epoxidation of Styrene with Hydrogen Peroxide, J. Catal., 209, 186-196 (2002).

L. Nie, K. K. Xin, W. Sheng Li, X. Ping Zhou. Benzaldehyde synthesis via styrene oxidation by O2 over TiO2 and TiO2/SiO2, Catal. Commun., 8, 488-492 (2007).

B. K. Das, J. H. Clark. A novel immobilised cobalt(III) oxidation catalyst, Chem. Commun., 605-606 (2000).

N. S. Patil, B. S. Uphade, P. Jana, S. K. Bharagava, and V. R. Choudhary. Epoxidation of styrene by anhydrous t-butyl hydroperoxide over reusable gold supported on MgO and other alkaline earth oxides, J. Catal. 223, 236-239 (2004).

J. B. Pedley, R. D. Naylor, and S. P. Kirby. Thermochemical Data of Organic Compounds, 2nd ed., Chapman and Hall, London (1986).

Nguyen Tien Thao, Nguyen Duc Trung, Dang Van Long. Activity of molybdate-intercalated layered double hydroxides in the oxidation of styrene with air, Catalysis Letters, 146, 918-928 (2016).

Gobinda Chandra Behera, K. M. Parida. Comparative study of molybdenum promoted vanadium phosphate catalysts towards epoxidation of cyclohexene, Appl. Catal. A, 464-465, 364-373 (2013).

Nguyen Tien Thao, Nguyen Van Tien, Dang Van Long, Le Thi Kim Huyen. Catalytic activity of cobalt oxides/bentonite in the conversion of styrene, VNU Journal of Science, 30, 263-268 (2014).

Cristina I. Fernandes, Silvia C. Capelli, Pedro D. Vaz, Carla D. Nunes. Highly selective and recyclable MoO3 nanoparticles in epoxidation catalysis, Appl. Catal. A, 504, 344-350 (2015).


Full Text: PDF

Refbacks

  • There are currently no refbacks.