Oxidative Dehydrogenation of Ethane: A Chemical Looping Approach

被引：111
作者：
Neal, Luke M. [1 ]
Yusuf, Seif [1 ]
Sofranko, John A. [2 ]
Li, Fanxing [1 ]
机构：
[1] NC State Univ, Dept Chem & Biol Engn, 911 Partners Way, Raleigh, NC 27695 USA
[2] EcoCatalyt Technol LLC, 9 Deer Pk Dr,Suite J-1, Monmouth Jct, NJ 08852 USA
来源：
ENERGY TECHNOLOGY | 2016年 / 4卷 / 10期
关键词：
catalysis; chemical looping; ethane; oxidative dehydrogenation; redox reaction; METHANE PARTIAL OXIDATION; SYNTHESIS GAS GENERATION; SHELL REDOX CATALYST; OXYGEN CARRIERS; CARBON CAPTURE; CO2; CAPTURE; HIGHER HYDROCARBONS; PROMOTED MN/SIO2; REACTOR SYSTEM; PILOT-PLANT;
D O I：
10.1002/ente.201600074
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The current study investigates a chemical-looping-based oxidative dehydrogenation (CL-ODH) concept for ethane-to-ethylene conversion. In this cyclic redox scheme, an oxide-based redox catalyst is used to selectively combust hydrogen from ethane dehydrogenation. As the hydrogen product limits ethane conversion, insitu oxidation of hydrogen enhances the ethane conversion and ethylene yield. Moreover, heat required in ODH is compensated by re-oxidation of the oxygen-deprived redox catalyst, enabling auto-thermal operation for the overall process. Compared to steam cracking, CL-ODH can potentially achieve higher efficiency with lower CO2 and NOx emissions. Silica and magnesia-supported manganese oxides are investigated. It is determined that unpromoted Mn/SiO2 and Mn/MgO redox catalysts exhibit low selectivity towards ethylene. The addition of promoters such as sodium and tungsten renders effective redox catalysts with satisfactory activity, selectivity, oxygen carrying capacity, and redox stability.
引用
收藏
页码：1200 / 1208
页数：9
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