Yoon, Suji Lim, Seoyeon Choi, Jae-Wook Suh, Dong Jin Song, Kwang Ho Ha, Jeong-Myeong 2024-01-19T16:32:56Z 2024-01-19T16:32:56Z 2021-09-02 2020-09-29 2046-2069 https://pubs.kist.re.kr/handle/201004/118090 This study examined the effects of oxygen species on the unsteady-state oxidative coupling of methane (OCM) using a lengthy catalyst bed of Na2WO4/Mn/SiO2. The reaction conditions, including the methane-to-oxygen ratio, ratio of feed gas dilution by N-2, quantity of catalyst, and feed flow rate were adjusted for the continuous flow fixed bed reaction system. While the O(2)gas initiated methyl radical formation from methane, the surface lattice oxygen atoms improved the dehydrogenation of paraffins to olefins without significant activation of methane. The addition of CO(2)as a mild oxidizing agent was also tested and slightly improved OCM selectivity with slightly lower methane conversion were observed. English ROYAL SOC CHEMISTRY CARBON-DIOXIDE C-2 HYDROCARBONS NA2WO4/MN/SIO2 CATALYST NA2WO4-MN/SIO2 CATALYST PERFORMANCE CO2 MN/NA2WO4/SIO2 CONVERSION OXIDANT ETHANE Study on the unsteady state oxidative coupling of methane: effects of oxygen species from O-2, surface lattice oxygen, and CO(2)on the C(2+)selectivity Article 10.1039/d0ra06065h 1 RSC ADVANCES, v.10, no.59, pp.35889 - 35897 RSC ADVANCES 10 59 35889 35897 scie scopus 000574586100029 2-s2.0-85093697457 Chemistry, Multidisciplinary Chemistry Article CARBON-DIOXIDE C-2 HYDROCARBONS NA2WO4/MN/SIO2 CATALYST NA2WO4-MN/SIO2 CATALYST PERFORMANCE CO2 MN/NA2WO4/SIO2 CONVERSION OXIDANT ETHANE