Applied Catalysis A: General (2020)
Update date:2022-08-15
Topics:
Dutta, Kanchan
Chaudhari, Vishnu
Li, Chao-Jun
Kopyscinski, Jan
Vast availability of natural and shale gases makes methane a reliable source for synthesizing valuable chemical building blocks such as ethylene. A new stable supported GaN/SBA15 catalyst from an emerging class of nitride catalysts was reported for the direct non-oxidative methane coupling to ethylene. The effect of nitridation on the catalyst properties and activity was investigated. The optimum nitridation temperatures were 700 °C and 750 °C for the GaN/SBA15 and the unsupported GaN catalyst, respectively. Supported catalysts were more stable and had 5–10 times higher product (ethylene) formation rates per gram of gallium than the unsupported catalysts due to the higher surface area (>320 vs. <20 m2 g?1) and Ga-dispersion inside the pores. Compared to the oxide precursors, the nitrides exhibited a higher atom conversion efficiency for the CH4 carbon leading to higher ethylene selectivity (71 % for GaN/SBA15, <58 % for Ga2O3/SBA15) and lower coke selectivity (27 % for GaN/SBA15, 40 % for Ga2O3/SBA15).
View MoreTai zhou world Pharm & Chem Co., Ltd
Contact:+86-576-85301198
Address:Rome 1001,wangjiang plaza,unti 2,jinshan east Road linhai,zhejiang,china
Contact:0086-29-89196322
Address:North of the Fifth Keji Road, Hi-Tech Industrial Zone, Xi'an City, Shaanxi Province, China
Contact:+44 7958 511245
Address:PO Box 469, Manchester, UK
Shandong Hongxiang Zinc Co., Ltd
Contact:086-0311-66187879
Address:DaWang developing zone
Zhejiang Chemicals Import & Export Corporation (ZHECHEM)
Contact:+86-571-87046953
Address:No. 37, Qingchun Road
Doi:10.1039/c2gc35615e
(2012)Doi:10.1002/anie.200351405
(2003)Doi:10.1166/jnn.2018.15381
(2018)Doi:10.1039/c7md00551b
(2018)Doi:10.1002/zaac.200700139
(2007)Doi:10.1002/chem.201400153
(2014)