Gas-Phase Synthesis of Dimethyl Carbonate from Methanol and Carbon Dioxide Over Co1.5PW12O40 Keggin-Type Heteropolyanion

被引：41
作者：
Aouissi, Ahmed [1 ]
Al-Othman, Zeid Abdullah [1 ]
Al-Amro, Amro [1 ]
机构：
[1] King Saud Univ, Dept Chem, Riyadh 11451, Saudi Arabia
来源：
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES | 2010年 / 11卷 / 04期
关键词：
heteropolyanion; Keggin structure; methanol; dimethyl carbonate; direct synthesis; carbon dioxide; THERMAL-STABILITY; CATALYST; ACIDS;
D O I：
10.3390/ijms11041343
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：
The reactivity of Co1.5PW12O40 in the direct synthesis of dimethyl carbonate (DMC) from CO2 and CH3OH was investigated. The synthesized catalyst has been characterized by means of FTIR, XRD, TG, and DTA and tested in gas phase under atmospheric pressure. The effects of the reaction temperature, time on stream, and methanol weight hourly space velocity (MWHSV) on the conversion and DMC selectivity were investigated. The highest conversion (7.6%) and highest DMC selectivity (86.5%) were obtained at the lowest temperature used (200 degrees C). Increasing the space velocity MWHSV increased the selectivity of DMC, but decreased the conversion. A gain of 18.4% of DMC selectivity was obtained when the MWHSV was increased from 0.65 h(-1) to 3.2 h(-1).
引用
收藏
页码：1343 / 1351
页数：9
相关论文
共 24 条
[1]   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
[2]   Highly effective synthesis of dimethyl carbonate from methanol and carbon dioxide using a novel copper-nickel/graphite bimetallic nanocomposite catalyst [J].
Bian, Jun ;
Xiao, Min ;
Wang, Shuanjin ;
Wang, Xiaojin ;
Lu, Yixin ;
Meng, Yuezhong .
CHEMICAL ENGINEERING JOURNAL, 2009, 147 (2-3) :287-296
[3]   Heteropolyoxotungstates containing a wide catalytic target: reducibility and thermal stability [J].
Cabello, CI ;
Egusquiza, MG ;
Botto, IL ;
Minelli, G .
MATERIALS CHEMISTRY AND PHYSICS, 2004, 87 (2-3) :264-274
[4]   Reaction of dialkyltin methoxide with carbon dioxide relevant to the mechanism of catalytic carbonate synthesis [J].
Choi, JC ;
Sakakura, T ;
Sako, T .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (15) :3793-3794
[5]   Developments in the production and application of dimethylcarbonate [J].
Delledonne, D ;
Rivetti, F ;
Romano, U .
APPLIED CATALYSIS A-GENERAL, 2001, 221 (1-2) :241-251
[6]   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
[7]   Thermal decomposition of dimethoxymethane and dimethyl carbonate catalyzed by solid acids and bases [J].
Fu, YC ;
Zhu, HY ;
Shen, JY .
THERMOCHIMICA ACTA, 2005, 434 (1-2) :88-92
[8]   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
[9]   Highly active and selective Cs2.5H0.5PW12O40/SBA-15 composite material in the oxidation of cyclopentane-1,2-diol to glutaric acid by aqueous H2O2 [J].
Gao, Ruihua ;
Chen, Hui ;
Le, Yingyi ;
Dai, Wei-Lin ;
Fan, Kangnian .
APPLIED CATALYSIS A-GENERAL, 2009, 352 (1-2) :61-65
[10]   Critical temperatures and pressures of reacting mixture in synthesis of dimethyl carbonate with methanol and carbon dioxide [J].
Guo, Xing Cui ;
Qin, Zhang Feng ;
Wang, Guo Fu ;
Wang, Jian Guo .
CHINESE CHEMICAL LETTERS, 2008, 19 (02) :249-252
123