Methanol Dehydrogenation to Formaldehyde over Zinc Oxide-Modified Sodium Carbonate

Article Preview

Abstract:

Methanol dehydrogenation to formaldehyde was conducted in a fixed-bed flow reactor under the atmospheric pressure with sodium carbonate modified by metal oxides. The effects of catalyst composition, reaction temperature, weight hourly space velocity (WHSV) on the reaction were investigated. The catalysts were characterized by XRD, TG and nitrogen adsorption. The results indicated that ZnO/Na2CO3 containing 2wt% ZnO prepared by mechanical grinding method had higher catalytic activity for methanol dehydrogenation to formaldehyde. The conversion of methanol and the selectivity of formaldehyde were respectively 57.62% and 77.84% under the condition of wmethanol/wfeed =0.19, reaction temperature 650°C and WHSV (methanol) 7h-1.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 750-752)

Pages:

1826-1830

Citation:

Online since:

August 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Su S, Zaza P, Renken A. Chemical Engineering Technology, 1994, 17(6): 34-40.

Google Scholar

[2] Wenshu Jiang, Danxing Zheng, Xiqiang Wang. Journal of Beijing University of Chemical Technology. 2001, 28: 17-21. (In Chinese).

Google Scholar

[3] Yongbin Li: Research of catalytic performance of sodium compouds on methanol dehydrogenation to anhydrous formaldehyde reaction. Taiyuan: Taiyuan University of Technology(2005). (In Chinese).

Google Scholar

[4] Huaiwang Yang, Jun Shen, Yongbin Li, et al. Gas Chemical Industry. 2006, 31(3): 27-30. (In Chinese).

Google Scholar

[5] Meyer A, Renken A. Chemical Engineering Technology. 1990, 13(3): 145-149.

Google Scholar

[6] Dengfeng Wang, Xuelan Zhang, Wei Wei, et al. Petrochemical Engineering. 2012, 41(4): 396-400. (In Chinese).

Google Scholar

[7] Caiping Yang: Acid-base property of MgO catalyst doped with La, Ce and application in aldol condensation of formaldehyde or acetaldehyde. East China University of Science and Technology(2007). (In Chinese).

Google Scholar