Abstract
In this work, ethylene epoxidation reaction for ethylene oxide production over silver catalysts loaded on two different supports (silica and alumina particles) in a low-temperature AC dielectric barrier discharge (DBD) reactor was investigated. The DBD plasma system was operated under the following base conditions: an O2/C2H4 feed molar ratio of 1/4, a total feed flow rate of 50 cm3/min, an electrode gap distance of 0.7 cm, an input frequency of 500 Hz, and an applied voltage of 19 kV. From the results, the presence of silver catalysts improved the ethylene oxide production performance. The silica support interestingly provided a higher ethylene oxide selectivity than the alumina support. The optimum Ag loading on the silica support was found to be 20 wt%, exhibiting the highest ethylene oxide selectivity of 30.6%.
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References
Lefort TE (1931) French Patent 729952
http://en.wikipedia.org/wiki/Ethylene_oxide (accessed on December 10, 2010)
http://www.labsafety.com/refinfo/ezfacts/ezf176.htm (accessed on December 10, 2010)
Campbell CT, Paffett MT (1984) Appl Surf Sci 19:28
Campbell CT, Koel BE (1985) J Catal 92:272
Tan SA, Grant RB, Lambert RM (1986) J Catal 100:383
Tories N, Verikios XE (1987) J Catal 108:161
Jun Y, Jingfa D, Xiaohong Y, Shi Z (1992) Appl Catal A Gen 92:73
Mao CF, Vannice MA (1995) Appl Catal A 122:61
Jankowick JT, Barteau MA (2005) J Catal 236:379
Dellamorte JC, Lauterback J, Barteau MA (2007) Catal Today 120:182
Rojluechi S, Chavadej S, Schwank JW, Meeyoo V (2007) Catal Commun 1:57
Marta CN, de Carvalho A, Passos FB, Schmal M (2007) J Catal 248:124
Chavadej S, Tansuwan A, Sreethawong T (2008) Plasma Chem Plasma Process 28:643
Sreethawong T, Suwannabart T, Chavadej S (2009) Chem Eng J 115:396
Seyedmonir SR, Plishchke JK, Vannic MA, Young MW (1990) J Catal 123:534
Bradford MCJ, Fuentes DX (2002) Catal Commun 3:51
Rojluechai S, Chavadej S, Schwank JW, Meeyoo V (2006) J Chem Eng Jpn 39:321
Lee JK, Verykbs XE, Pitchai R (1989) Appl Catal 50:171
Yong YS, Kennedy EM, Cant NM (1991) Appl Catal 76:31
Rosacha LA, Anderson GK, Bechtold LA, Coogan JJ, Heck HG, Kang M, McCulla WH, Tennant RA, Wantuck PJ, NATO ASI series (1993) 34(part B)
Suhr H, Schmid H, Pfeundschuh H, Lacocca D (1984) Plasma Chem Plasma Process 4:285
Heintze M, Pietruszka B (2004) Catal Today 87:21
Sreethawong T, Suwannabart T, Chavadej S (2008) Plasma Chem Plasma Process 28:629
Chavadej S, Kiattubolpaiboon W, Rangsunvigit P, Sreethawong T (2007) J Mol Catal A: Chem 263:128
Sreethawong T, Permsin N, Suttikul T, Chavadej S (2010) Plasma Chem Plasma Process 30:503
Cullity BD (1978) Element of x-ray diffraction. Addison-Wesley, Massachusetts
Apostolos PF, Kostas ST (2007) Catal Today 127:148
Oyama ST (2008) Mechanisms in homogeneous and heterogeneous epoxidation catalysis. Elsevier, Oxford
http://accuratus.com/alumax.html (accessed on December 10, 2010)
Volckmar CE, Bron M, Bentrup U, Martin A, Claus P (2009) J Catal 261:1
Acknowledgments
The authors would like to gratefully acknowledge Dudsadeepipat Scholarship, Chulalongkorn University, Thailand; the Research Unit of Petrochemical and Environmental Catalysis under the Ratchadapisek Somphot Endowment Fund, Chulalongkorn University, Thailand; and Center for Petroleum, Petrochemicals, and Advanced Materials, Chulalongkorn University, Thailand.
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Suttikul, T., Sreethawong, T., Sekiguchi, H. et al. Ethylene Epoxidation over Alumina- and Silica-Supported Silver Catalysts in Low-Temperature AC Dielectric Barrier Discharge. Plasma Chem Plasma Process 31, 273–290 (2011). https://doi.org/10.1007/s11090-010-9280-1
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DOI: https://doi.org/10.1007/s11090-010-9280-1