|
|
|
Conversion of methane through dielectric-barrier
discharge plasma |
| WANG Baowei, CAO Xiaolei, YANG Kuanhui, XU Genhui |
| Key Laboratory for Green Chemical Technology, School of Chemical Engineering Technology, Tianjin University |
|
|
|
|
Abstract Methane coupling to produce C2 hydrocarbons through a dielectric-barrier discharge (DBD) plasma reaction was studied in four DBD reactors. The effects of high voltage electrode position, different discharge gap, types of inner electrode, volume ratio of hydrogen to methane and air cooling method on the conversion of methane and distribution of products were investigated. Conversion of methane is obviously lower when a high voltage electrode acts as an outer electrode than when it acts as an inner electrode. The lifting of reaction temperature becomes slow due to cooling of outer electrode and the temperature can be controlled in the expected range of 60°C–150°C for ensuring better methane conversion and safe operation. The parameters of reactors have obvious effects on methane conversion, but it only slightly affects distribution of the products. The main products are ethylene, ethane and propane. The selectivity of C2 hydrocarbons can reach 74.50% when volume ratio of hydrogen to methane is 1.50.
|
|
Issue Date: 05 December 2008
|
|
| 1 |
Lunsford J H . Catalytic conversion of methane to more useful chemicalsand fuels: a challenge for the 21st century. Catal Today, 2000, 63(2–4): 165–174.
doi:10.1016/S0920-5861(00)00456-9
|
| 2 |
Spiess F J, Suib S L, Irie K, Hayashi Y, Matsumoto H . Metal effect and flow rateeffect in the hydrogen production from methane. Catal Today, 2004, 89(1–2): 35–45.
doi:10.1016/j.cattod.2003.11.043
|
| 3 |
Chang M B, Huang C P . Oxidativeconversion of methane via plasma processing with dielectric barrierdischarge. J Adv Oxid Technol, 1999, 4(3): 333–338
|
| 4 |
Li X S, Zhu A M, Wang K J, Xu Y, Song Z M . Methane conversion to C2 hydrocarbons and hydrogen in atmospheric non-thermalplasmas generated by different electric discharge techniques. Catal Today, 2004, 98(4): 617–624.
doi:10.1016/j.cattod.2004.09.048
|
| 5 |
Kado S, Sekine Y, Nozaki T, Okazaki K . Diagnosisof atmospheric pressure low temperature plasma and application tohigh efficient methane conversion. CatalToday, 2004, 89(1–2): 47–55.
doi:10.1016/j.cattod.2003.11.036
|
| 6 |
Zou J J, Li Y, Zhang Y P, Liu C J . Product distribution of conversions of methane and carbon dioxideusing dielectric barrier discharge. ActaPhysico-chimica Sinica, 2002, 18(8): 759–763 (in Chinese)
|
| 7 |
Lu J, Li Z H, Wang B W, Xu G H . Effect of reactor type on methane conversion to C2 hydrocarbons by low temperature plasma. Journal of Fuel Chemistry and Technology, 2005, 33(6): 755–759 (in Chinese)
|
| 8 |
Wang B W, Xu G H . Conversionnatural gas to C2 hydrocarbons through dielectric-barrierdischarge plasma catalysis. Science inChina (B), 2002, 45(3): 299–310
|
| 9 |
He J X, Hu M, Han Y Y, Li Y H, Zhou Y S, Lu Z G . Decomposition of methane and formation of C2 hydrocarbons in DC discharge plasma. Petrochemical Technology, 2004, 33(1): 1–4 (in Chinese)
|
| 10 |
Dai B, Zhang X L, Gong W M, He R . Advancein research on plasma catalytic conversion of methane. Petrochemical Technology, 2002, 31(2): 141–144 (in Chinese)
|
| 11 |
Xia M Y, Cui J H, Xu G H . A new process for converting naturalgas to C2 hydrocarbon. Petrochemical Technology, 2003, 32(7): 141–144 (in Chinese)
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
