Reactivity of Heteropolytungstate and Heteropolymolybdate Metal Transition Salts in the Synthesis of Dimethyl Carbonate from Methanol and CO2

被引：28
作者：
Aouissi, Ahmed [1 ]
Al-Deyab, Salem S. [1 ]
Al-Owais, Ahmad
Al-Amro, Amro
机构：
[1] King Saud Univ, Petrochem Res Chair, Dept Chem, Riyadh 11451, Saudi Arabia
来源：
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES | 2010年 / 11卷 / 07期
关键词：
heteropoly compounds; dimethyl carbonate; Keggin structure; carbon dioxide; 12-MOLYBDOPHOSPHORIC ACID; CATALYTIC REACTIVITY; THERMAL-STABILITY; DIOXIDE; ACTIVATION; OXIDATION; DMC; BEHAVIOR; COPPER;
D O I：
10.3390/ijms11072770
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
A series of Keggin-type heteropoly compounds (HPC) having different countercations (Co, Fe) and different addenda atoms (W, Mo) were synthesized and characterized by means of Fourier-Transform Infrared Spectrometer (FT-IR) and X-ray powder diffraction (XRD). The catalytic properties of the prepared catalysts for the dimethyl carbonate (DMC) synthesis from CO2 and CH3OH were investigated. The experimental results showed that the catalytic activity is significantly influenced by the type of the countercation and addenda atoms transition metal. Among the catalysts examined, Co1.5PW12O40 is the most active for the DMC synthesis, owing to the synergetic effect between Co and W. Investigating the effect of the support showed that the least acidic one (Al2O3) enhanced the conversion but decreased the DMC selectivity in favor of that of methyl formate (MF), while that of dimethoxy methane remained stable.
引用
收藏
页码：2770 / 2779
页数：10
相关论文
共 32 条
[1]   Effect of the Bronsted acidity on the behavior of CO2 methanol reaction [J].
Allaoui, L. A. ;
Aouissi, A. .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2006, 259 (1-2) :281-285
[2]  
Aouissi A, 2006, ASIAN J CHEM, V18, P3009
[3]   Gas-Phase Synthesis of Dimethyl Carbonate from Methanol and Carbon Dioxide Over Co1.5PW12O40 Keggin-Type Heteropolyanion [J].
Aouissi, Ahmed ;
Al-Othman, Zeid Abdullah ;
Al-Amro, Amro .
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, 2010, 11 (04) :1343-1351
[4]   Novel application of thermally expanded graphite as the support of catalysts for direct synthesis of DMC from CH3OH and CO2 [J].
Bian, J. ;
Xiao, M. ;
Wang, S. J. ;
Lu, Y. X. ;
Meng, Y. Z. .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2009, 334 (01) :50-57
[5]   Direct synthesis of DMC from CH3OH and CO2 over V-doped Cu-Ni/AC catalysts [J].
Bian, Jun ;
Xiao, Min ;
Wang, Shuanjin ;
Lu, Yixin ;
Meng, Yuezhong .
CATALYSIS COMMUNICATIONS, 2009, 10 (08) :1142-1145
[6]   Catalytic activities of Co(Ni)Mo/TiO2-Al2O3 catalysts in gasoil and thiophene HDS and pyridine HDN:: effect of the TiO2-Al2O3 composition [J].
Borque, MP ;
López-Agudo, A ;
Olguín, E ;
Vrinat, M ;
Cedeño, L ;
Ramírez, J .
APPLIED CATALYSIS A-GENERAL, 1999, 180 (1-2) :53-61
[7]   Opportunities and prospects in the chemical recycling of carbon dioxide to fuels [J].
Centi, Gabriele ;
Perathoner, Siglinda .
CATALYSIS TODAY, 2009, 148 (3-4) :191-205
[8]   Acid-redox properties of titania-supported 12-molybdophosphates for methanol oxidation [J].
Damyanova, S ;
Cubeiro, ML ;
Fierro, JLG .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1999, 142 (01) :85-100
[9]   POLYOXOMETALATES CATALYST MATERIALS - X-RAY THERMAL-STABILITY STUDY OF PHOSPHORUS-CONTAINING HETEROPOLYACIDS H3+XPM12-XVXO40.13-14H2O (M = MO,W - X = 0-1) [J].
FOURNIER, M ;
FEUMIJANTOU, C ;
RABIA, C ;
HERVE, G ;
LAUNAY, S .
JOURNAL OF MATERIALS CHEMISTRY, 1992, 2 (09) :971-978
[10]   Synthesis and characterization of aluminum or copper tungstophosphate and tungstosilicate immobilized in a polymeric blend [J].
Fuchs, Vanesa M. ;
Pizzio, Luis R. ;
Blanco, Mirta N. .
EUROPEAN POLYMER JOURNAL, 2008, 44 (03) :801-807
1234